[APP][4.1+] "App manager" - alternative to the default app manger

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AndroidDeveloperLB

Senior Member
Mar 30, 2014
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Recently I've noticed that people put good reviews of my app, saying it helped them to get rid of "virus" apps.
While the app wasn't originally intended for such a task (and technically there is no such a thing as "virus" apps on Android, search for it on Google, here), I think it's nice to see the app helped people with it.
What I think that it helped people with, is to get rid of annoying/nasty/malicious apps, that show bad or unexpected behavior. Such a behavior might be intended (ads) or not (bugs of the app). Whatever it is, you've find it to be a bad behavior, such as ads popping out in random times, screen being taken control, things appear on top of other apps, ...

I've even used my app myself on both my device and for my family-relatives, to get rid of such apps.

So because of this, I've decided to write here a step-by-step manual of how to deal with this kind of situation :

1. Detection of suspicious app: Restart the OS. As soon as you notice the nasty behavior, open my app, and sort by recently launched. Now there is a very big chance that the nasty app is at the top of the list, or near it. Make sure it's not marked as system app (built in app), because in most cases system apps don't do nasty things. Such apps are marked in my app with "!" icon. There is also a very low chance that an app from respected company (such as Google) or a very popular app will cause this issue. If you've noticed the bad behavior only recently (meaning you've never seen it before), you might also see the same app if you sort by recently-installed or recently-updated.

2. Neutralizing of suspicious app or its behavior: First try to find a setting to disable the problematic behavior in the suspicious app, especially if it's a system app. If you can't find such a thing, continue reading. Choose to manage the suspected app, and try "force-stop" it, if possible. If it's impossible to choose it, or if the button to force-stop never changes to be disabled, choose to uninstall the app (use my app if it's impossible to do it on your own). If you don't want to uninstall the app (or can't), and the issue is something that floats, try to disable "Display over other apps".
In case you have a rooted device, you can choose to disable the app instead (using my app). This is way more effective than force-stop (because the app won't be able to wake from anything, till you enable it), and it won't remove the app's data.
If it's a system app that you think is the suspicious one and you can't disable/uninstall it via my app because you don't have a rooted device, check how to (try to) disable/remove it via this tutorial.

3. Testing if all is well now: Use your device for a while (depending on how often and on which cases you've seen the bad behavior). If indeed you can't see this issue anymore, you've probably found the real nasty app, and you can remove it if you wish to. If you still want to use the app, try to check the settings of the app to see if this behavior can be turned off, or contact the developer for help.
If it's not the app that causes nasty stuff, you can restore the app (run it, enable it, or re-install it, depending on what you did on previous step), and repeat from first step again.

4. Optionally help others: Now that you don't have the nasty app anymore, I suggest you to go to the app's page on the Google Play Store, and consider to write a review warning other people about it, and also report about the app, so that other people will think twice before using the app, and that the developer should change the app so that it won't happen again.
 
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AndroidDeveloperLB

Senior Member
Mar 30, 2014
1,901
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I've decided to put here the instructions I've made for (trying to) disabling/removing system apps without a rooted device . If you failed to remove an app via app-info screen or via my app, and you don't have a rooted device, this tutorial is for you.

If you already do have a rooted device, you can use my app to (try to) disable/uninstall system apps, by choosing to show them, and also enabling system-apps-removal on the settings screen.

Important thing to know in case you have Android 10 and above
Removal of system apps will probably almost always not really work, and even if you think it does, it'll will probably return after a restart of the OS. Even Magisk modules such as Debloater just hide the apps, because if you remove/disable the module and restart the OS, eventually the app will return.
What's suggested now for Android 10 and above is to disable the apps, instead.

Disabling/Uninstalling apps without root :


OK, some people asked me how to perform some special operations without root. In fact, you can perform most of the operations my app has without root, but you'll need a PC being connected to the device.
Here's how you disable any app you wish, via your PC.
Before you do anything, note that disabling an app should be used only if you think it's safe to disable the app. Also note that this might not work on each app you choose (depends on the restrictions imposed by the ROM of your device). Same goes to uninstalling apps. Both of those operations might work, and might not work. Depends on many things.
The steps:

1. Download and install/decompress the command line tools of the Android SDK :
https://developer.android.com/sdk/index.html
scroll to "Get just the command line tools" , and download the one that matches your OS.

2. Connect the device to the PC.

3. Find the file called "adb" in the folder you've installed/decompressed to.

4. Use the console/terminal (depends on your OS) to go to this path.

5. Find the package name (it's like an id) of the app you wish to disable. you can use my app to find it. write it down somewhere.

6. In the "settings" screen of the device, go to "developer options", and turn on "android debugging". If it's hidden, go to "About Phone" and then tap "Build Number" multiple times till it says you are a developer.

7. In the console, write down:
HTML:
adb devices
If the device is connected and you have the correct driver, it should be printed. if not, you probably need a suitable driver. download and install it according to the device's model.

8. In the console, write :
HTML:
adb shell
This way you enter a new state to type commands more directly.

9. Type:
HTML:
pm disable PACKAGE_NAME
where PACKAGE_NAME is the package name you've written down on step #5
If this doesn't work, try (credit to this article) :
HTML:
pm disable-user --user 0 PACKAGE_NAME

If you wish to uninstall the app, write this instead:
HTML:
pm uninstall PACKAGE_NAME

You can also do it all in a single line. For example, if you want to try to disable YouTube app, its package name is "com.google.android.youtube", so the command would be:

HTML:
./adb shell pm disable-user --user 0 com.google.android.youtube


10. If all went well , you aren't supposed to see "failure" anywhere.
You can check that the app got disabled by either trying to launch it (and fail) or by seeing that it's missing in my app from the list, in case the filters are set not to show disabled apps.
In fact, if my app is already on the front, you can see the disabled app disappearing from the list, as soon as you disable it.

11. That's it.

To re-enable an app, in step #9, type:
HTML:
pm enable PACKAGE_NAME
or if this doesn't work use this instead:
HTML:
pm enable --user 0

Also, to learn about more possible commands you can use, read this:
http://developer.android.com/tools/help/adb.html
 
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AndroidDeveloperLB

Senior Member
Mar 30, 2014
1,901
450
Today I got a weird email from Google about suspending my app, just because someone installed another app from within, that has Phone permission:
https://www.reddit.com/r/androiddev/comments/dkxgpp/app_was_suspended_from_the_play_store_and_the/
My app shows only APK files that already exist on the device. It doesn't get you APK files and never has been. It doesn't send any private information to any server (and there is no server anyway). It always used only Google and Admob.

I hope that the app will be available soon again. If you try to install the app, please be patient and try again when it comes back.
This is all a huge misunderstanding.
 

BROKEN1981

Senior Member
Dec 27, 2013
1,841
835
ASUS ROG Phone 3
Today I got a weird email from Google about suspending my app, just because someone installed another app from within, that has Phone permission:
https://www.reddit.com/r/androiddev/comments/dkxgpp/app_was_suspended_from_the_play_store_and_the/
My app shows only APK files that already exist on the device. It doesn't get you APK files and never has been. It doesn't send any private information to any server (and there is no server anyway). It always used only Google and Admob.

I hope that the app will be available soon again. If you try to install the app, please be patient and try again when it comes back.
This is all a huge misunderstanding.
Where can I get the APK file? Saw the story on Android Police and it got me interested.

Sent from my LG-H932 using XDA Labs
 

AndroidDeveloperLB

Senior Member
Mar 30, 2014
1,901
450
Where can I get the APK file? Saw the story on Android Police and it got me interested.

Sent from my LG-H932 using XDA Labs

Well I'm surprised to see the article so soon after this has happened.

As for the APK, I wanted to say that you can find it on APK mirror website, but for some reason it doesn't exist there while my other spare time apps do. No idea why.
Anyway, I can send you the APK via PM if you wish.
Do note that you won't get updates to the app when it's back online on the Play Store.

EDIT: OK I was asked multiple times. Here:
https://ufile.io/2tbal9e6
 
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AndroidDeveloperLB

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Mar 30, 2014
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Today I've published a major update to the app, allowing you to install split APKs from many kinds of apps: file managers, chatting apps, Google Drive, and any app that allows to open a file via other apps ...

The supported formats are:

  • Stand alone APK files, and split APK files that are on the same folder (needs access to the folder though, so it should be on the file system) .
  • APKM (of APK-Mirror).
  • XAPK (of APK-Pure) , including copying of OBB files when the installation is complete. You don't have to have those on the file system, but it's very recommended for performance reasons.
  • APKS (of SAI app), as well as any other ZIP-based file that just has the split APK files.

Other than being able to install multiple split-APK file formats on various apps, it has those features too:
  • This is the only app that I know of that requests (starting from Android O) to create an app icon on the launcher.
  • No annoyances and ads while installing. Only a progress to show, and trying to do it as quickly as possible.
  • Checks before installing if it's even possible, based on currently installed apps.
  • For rooted devices, you get extra features: (try to) remove the files upon success, auto-grant permissions, (request to) install on SD-card
 

retro486

Senior Member
Aug 1, 2012
87
29
Is there a trick to get apkm to show up in the APKs tab? I have one of my Downloads folder and it's not showing as available but other plain APKs are.
 
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AndroidDeveloperLB

Senior Member
Mar 30, 2014
1,901
450
Is there a trick to get apkm to show up in the APKs tab? I have one of my Downloads folder and it's not showing as available but other plain APKs are.

Sadly it's not implemented yet. Took me a few months to get outside apps to reach my app to install, but having it inside the app will be a bit harder and longer, as I need to perform various changes to it, and I want to not just show them in the list of APKs, but also to be able to share split-APK based apps (currently only normal apps and APK files are supported within the app).
Sadly currently APKM files are much slower to parse too, in comparison to normal APK files (they use some encryption mechanism), so I want to also make it as efficient as I can.

But, it's a very popular thing people told me and I do plan to do it. Just need to prepare some changes first.
It's a spare time app, so I need to plan things carefully.
 
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AndroidDeveloperLB

Senior Member
Mar 30, 2014
1,901
450
Why isnt your app open sourced?
Didn't see a good reason at the time and I wanted full control over it, looking at the code and always know that's mine (for better or worse). I wanted something that's all mine, compared to what I do at work.
In addition, it was a long time ago, when I barely knew about repositories and how to put anything on Github. It was all local on my PC for years. :)

Maybe I'm wrong in this thinking. Maybe the community could have helped me. Maybe some day I will do it. I don't know.
 

SilentDevGuy

Senior Member
  • Feb 10, 2021
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    Didn't see a good reason at the time and I wanted full control over it, looking at the code and always know that's mine (for better or worse). I wanted something that's all mine, compared to what I do at work.
    In addition, it was a long time ago, when I barely knew about repositories and how to put anything on Github. It was all local on my PC for years. :)

    Maybe I'm wrong in this thinking. Maybe the community could have helped me. Maybe some day I will do it. I don't know.

    Ahh I see, I feel like your app would have received more attention and use because its great, but its hard to trust using an APP manager that is closed source apps with unknown binaries, do you have a way to show the end consumer your app doesnt abuse root or something like that? That is why I asked open sourced, if you are ever interested please message me if you open source, then I will start using this app too :).
     

    AndroidDeveloperLB

    Senior Member
    Mar 30, 2014
    1,901
    450
    Ahh I see, I feel like your app would have received more attention and use because its great, but its hard to trust using an APP manager that is closed source apps with unknown binaries, do you have a way to show the end consumer your app doesnt abuse root or something like that? That is why I asked open sourced, if you are ever interested please message me if you open source, then I will start using this app too :).
    It's hard to trust closed sourced apps? Most apps on the Play Store, including the most popular ones - are closed sourced.
    I already published privacy policy.
    Try me. Try to monitor all the Internet connections of the app. See if I violate anything from it.
    I have nothing to hide.
    Try even with root being granted.

    BTW, making an app open sourced doesn't mean that what you get on the Play Store is really 100% from it. It could have additional component that aren't published.
     

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    • 52
      After so long of developing apps for other people, I've decided to make one 100% by myself, and publish it.

      The app is basically an alternative to the default app-manager of Android, and it provides some unique features that helps you manage and uninstall apps quicker and easier.

      If you've found this app useful, please support it by sharing/donating/comment on the play store.

      Installation link :


      APK mirror:
      https://www.apkmirror.com/apk/androiddeveloperlb/app-manager/
      ApkPure:
      https://apkpure.com/app-manager/com.lb.app_manager

      Some screenshots

      attachment.php


      So, here's some information about it:

      Background
      How many times have you tried to uninstall an app but found it annoyingly hard, whether you've forgot its name or it's hidden in a bunch of many apps you have?
      Have you ever wanted to uninstall a built in app, which came from the carrier/manufacturer?
      Are you a programmer/tester and need to uninstall/reset your apps frequiently?

      If so, this is the app for you.

      Short description
      As I've written ,the purpose of this app is to replace the default app-manager, and ease the uninstallation task as much as possible.
      The app is free and supports Android 2.3 and above, but works best from Android 4.0.
      The app has ads (banners) but you can easily remove them by donating.

      Who is it useful for?
      The app is intended for multiple kinds of people:

      • For the common user, it's easier to perform searches of apps, easier to unisnstall them, and easier to share them.
        It's also easier to go to the play store page of the app ,give feedback about it and contact the developers.
      • For power users, it's easier to uninstall built in apps (AKA "system apps"), like the bloatware that come with the OS.
      • For developers, QA, and beta testers, it's easier to uninstall/reset the recently installed app, by using widgets.
        You can also share apps as APK files, and see the version of the apps.

      Features and advantages over other apps
      • Viewing of app types of apps, and not just those that you can launch (example: plugins, live wallpapers, keyboards,...).
      • Widgets, for quick uninstallation/reset of the most recently installed app.
      • Quick uninstallation of apps. For rooted devices, the uninstallation (and other operations) can be silent (in the background)
      • Easy uninstallation of apps that got admin privilages.
      • Ability to automatically add app shortcuts when they get installed, no matter how they got installed.
        Also the ability to choose which launcher will create the shortcuts.
      • Easy to use - one click to uninstall. Long click for multi-selection
      • Context menu options on selected app:
        • Run
        • Share Play store link, Amazon AppStore link, or even APK file (no need for Root)
        • Manage
        • Open app on the Play store.
        • Kill background process, or stop the app (needs root)
        • Quick reset of the app (needs root).
        • disable/enable app (needs root).
        • Create shortcut.
        • Search the app via your search engine or the Internet.
      • Sort the apps bysize, name, by package name, by date installed, and by date updated
      • Filter apps by:
        • System/user apps,
        • Enabled/disabled apps
        • Installation path : SD card / internal storage
      • Ability to uninstall system apps (Root only, and might not work on some cases)
      • Ability to replace the default uninstaller .
      • Detailed yet short view of the installed apps, including app name, package name, date insalled and version information.
      • Safe and automatic deletion of certain folders after uninstallation, that some Android OS versions don't handle for some reason.
      • Theme chooser, in case you don't like the cards UI.
      • Hopefully more to come, will be written about on the play store

      App translation
      https://crowdin.com/project/com-lb-app_manager

      Beta testing
      Links for the beta testing group:
      - https://play.google.com/apps/testing/com.lb.app_manager

      Articles

      FAQ
      The OS says the app runs in the background, or the app has a notification of its own. Why? Doesn't it consume battery?
      The app is triggered by app operation events : uninstall, install, clear-data...
      Upon each of those, it saves the state for various purposes, in the background. For example the removed-apps list, and the widget. Those have to be handled right away, so it must be done even if you don't see the app.
      In the rest of the time, it does absolutely nothing.
      This is why the app is so efficient in battery usage, that you won't see it in the list of battery-consuming apps. Meaning it doesn't even reach the 1% battery usage. I am sure it doesn't even reach 0.001% .
      You can hide the notification, but sadly on some Android versions (8.0, but not 8.1 and above) you might see a different notification, that the app might use the battery. You can safely ignore it. I guarantee there is no noticeable difference in battery consumption.

      In fact, due to the optimizations I've added for Android 8.0 and above, and because the app's process doesn't get killed so often, it might even be better in battery usage. The reason is that the app always had to listen to app-events, and before Android 8.0, the app got triggered by them, meaning its process started each time if it was killed before. Less CPU, more battery.

      I have a Xiaomi device and the app fails to install any kind of app. How come ?
      Seems it's an issue that will exist for quite some time, and that it is turned by default on Xiaomi devices and causes various issues (read here for example). This "feature" is called "MIUI optimization" , and for now you can only disable it on the "Developer options".
      So, for now, you can overcome this by enabling developer options and there to disable "Turn on MIUI optimization".
      Note that once you do this, the OS will reset a lot of apps, mainly in terms of permissions. This includes my app too.
      Just a side note: Xiaomi is known as one that breaks a lot of apps, as it creates its own made up rules and permissions, very much against how Android works. This is also why there is a website that speaks about it, here, so for better handling of the app, also white list it from the various permissions Xiaomi has created, too.
      Sadly I have no way to handle those things, as long as Xiaomi chooses to make their own non-standard rules.

      I don't have a rooted device, but I still want to disable/uninstall a system app. Is it possible?
      It's possible... to try, using a PC connected to your device.
      I've made a tutorial for this here (old one here ).
      If the OS would allow, you could uninstall or at least disable system apps this way.

      I think I got some nasty app, which shows ads randomly or takes control of the smartphone in some way (or any other bad behavior that I don't like). Can this app help me find it and neutralize it?
      Even though it wasn't originally intended for such a task, I've noticed it helped many people with it. There are multiple reviews telling that it helped them removing such "virus" apps. I've even done it myself on both my device and for my family-relatives.
      So the answer is that it might help you. Here's what you can do to try to handle it:
      https://forum.xda-developers.com/showpost.php?p=77987186&postcount=543

      What are split-APK files? What are "APKS" that are being generated sometimes when sharing apps?
      Split apk files (AKA "app bundle" apps) are not meant to be installed just like normal APK files. They are used as you use the app, getting installed by the Play Store, to use only the minimal things you will use on your device, with your Android version, with your CPU architecture, with your locales, with your screen density, and so on...

      Not only that, but if you install such files on other configurations, they might not work properly or fail to install.
      As far as I know, backup&restore of such apps is not even working on popular backup apps such as Titanium backup.

      Currently the app allows to share such apps as APKS files, which is just a zipped file with all of the APK files of the app. This is similar to what's done on various other apps and services (SAI, ApkPure, APK-mirror,...) with various file extensions (APKS, XAPK, APKM,...).

      To install them using my app (which supports all files that I've mentioned: APKS, XAPK, APKM ), you can currently do this only from other apps that trigger it. The most common way to do it is directly from file-manager apps, but this should also be possible via chatting apps and others.

      If you wish to do it on your via the PC, you can do it too:
      use adb command as such:

      Code:
      adb install-multiple apk1 apk2 ...

      Why isn't there a permissions management feature?
      For permissions management, I actually planned some management tool, but sadly Google has changed how permissions groups work, and so permissions sometimes go to a different group. For example, before Android P, the permission "WRITE_CALL_LOG" belonged to "Phone" permission group, but from Android P, it moved to "Call log" permission group, which never existed before.
      Currently, Google removed all APIs to get which permission group has which permission. Even in the documentation there is no mention anymore which permission group holds which permissions. Not only that, but OEMs sometimes make up their own permission which aren't official in any way (see "auto start" that Xiaomi made, and the reason that "don't-kill-my-app" website exists, for example). I still hope that one day I will be able to get a reliable way to get the correct information, no matter which version of Android the app runs on.

      Why isn't there an option to install an old version of an APK when I have a newer one installed?
      Apps aren't designed to handle this situation. They are only designed to handle upgrades. So, Google made it impossible to do it starting from Android 7 (read here). If you want to try it anyway, you can do it using PC&adb tool, as written here.

      Why isn't there a boot-up management feature? Memory freeing/boosting? CPU usage? RAM usage? Automatic-task-killing? Modify apps ?
      Various features of those types are not documented and not recommended to be used. Those can ruin how the apps work, just like OEMs do it sometimes even by default. This can also cause false crashes, or crashes that can't be reported. For users, some of those functions have the false promise by various apps that say it will make reduce battery consumption (search google for "Android task killer myth").
      It is not a good thing to alter how apps work and behave, and Google has rules about modifying APKs, so I do not want to take the risk in doing so.
      As for viewing information alone, this is something that isn't useful for users, but more for developers who already have them via the various development tools and even apps that specialize about it.
      This app was made for users and power users mostly, and I want to make it work properly as much as possible, without worrying that for some devices or at some day things will be broken. I prefer to have as little workarounds as possible.
      That's why I decided to stick with things that are more standard, more commonly used, and more available to be used.

      I have an SD-card. Why can't I set an installed app to be on it, properly?
      Installing an app to the SD-card has various restrictions that determine whether it's possible or not, and how much it will affect how well the app behaves.
      To do it here, you have to have a rooted device (or use a PC with adb command as written above), the OS should allow to do it, and the target app should allow to do it.
      That being said, you might try your luck via the developer-settings of the OS (check how to enable it on Google for your device), via "force allow apps on external" preference.

      Why not share version-name and app-name alone instead of version-code and package-name with others?
      Simply put, version-name and app-name are not unique enough, depend on the current locale, can be of any length (so it can be too long) and not restricted by which characters are used (so can be problematic on some OSs).
      That's while version-code is always an increasing number, and package-name is always safe to use and is considered as the ID of the app on the Play Store and probably on any app-store.
      That being said, I might allow to customize what to share some day, and let users be responsible of possible issues if they might occur.

      In the past versions, the app didn't need to run in the background, and didn't need to have usage-stats permission at all. What happened?
      In one word: Google . Google has changed the rules:
      - For running in the background , the reason is that a lot of types of global events (called "Intents") need to be handled only with an app that has a sticky notification (called "foreground service"). Before Android 8.0, it was possible without this requirement. The app would have been awakened for each such event, handle it and go to sleep, while the OS can kill it if needed. Now it's not possible (read here). Adding to this, is that Google forces all new apps and updated to existing ones to do it for Android 8.0 and above, by the end of the year (read here). This means you should expect more apps to show their notifications, or they will present a weaker functionality.
      The good news is that this actually helps with battery usage on Android 8.0 and above. Instead of re-creating the process of App-Manager for each event, the process is already alive, so less CPU will be used. And, since it's already alive, handling it will take less time. So, less CPU and less time, meaning more battery for you. You can also hide the notification if it bothers you.
      - For usage-stats permission, before Android 8.0 I could get the exact app-size without any permission. And, before Android 5.0, I could get the recently launched apps with a permission that doesn't require requesting in runtime. Because of the recent changes, this is not possible anymore without usage-stats permission. And, since getting app-size and sorting apps by recently launched - are quite basic features, I decided to request it all in the beginning together with the storage permission that was always a requirement.
      Getting the app-size was tricky before Android 8.0, and so I added a fallback in case it's not working for some users, or working too slow for them. It wasn't perfect, but it was all I could do.
      The good news about this, is that it's much more efficient than what I did before. Getting app size is super fast, and it will always work because there is now an official way to do it. In fact it's so quick that I've removed the fallback for Android 8.0 and above.

      Privacy policy ?
      Written on this post.
      3
      Keep safe...?i pray for peace

      Sent from my SM-G900F using Tapatalk

      Thank you.

      Now publishing new test version for all beta testers (58 - v 1.58) .

      If it will work fine, I will promote it to be public.
      3
      Recently I've noticed that people put good reviews of my app, saying it helped them to get rid of "virus" apps.
      While the app wasn't originally intended for such a task (and technically there is no such a thing as "virus" apps on Android, search for it on Google, here), I think it's nice to see the app helped people with it.
      What I think that it helped people with, is to get rid of annoying/nasty/malicious apps, that show bad or unexpected behavior. Such a behavior might be intended (ads) or not (bugs of the app). Whatever it is, you've find it to be a bad behavior, such as ads popping out in random times, screen being taken control, things appear on top of other apps, ...

      I've even used my app myself on both my device and for my family-relatives, to get rid of such apps.

      So because of this, I've decided to write here a step-by-step manual of how to deal with this kind of situation :

      1. Detection of suspicious app: Restart the OS. As soon as you notice the nasty behavior, open my app, and sort by recently launched. Now there is a very big chance that the nasty app is at the top of the list, or near it. Make sure it's not marked as system app (built in app), because in most cases system apps don't do nasty things. Such apps are marked in my app with "!" icon. There is also a very low chance that an app from respected company (such as Google) or a very popular app will cause this issue. If you've noticed the bad behavior only recently (meaning you've never seen it before), you might also see the same app if you sort by recently-installed or recently-updated.

      2. Neutralizing of suspicious app or its behavior: First try to find a setting to disable the problematic behavior in the suspicious app, especially if it's a system app. If you can't find such a thing, continue reading. Choose to manage the suspected app, and try "force-stop" it, if possible. If it's impossible to choose it, or if the button to force-stop never changes to be disabled, choose to uninstall the app (use my app if it's impossible to do it on your own). If you don't want to uninstall the app (or can't), and the issue is something that floats, try to disable "Display over other apps".
      In case you have a rooted device, you can choose to disable the app instead (using my app). This is way more effective than force-stop (because the app won't be able to wake from anything, till you enable it), and it won't remove the app's data.
      If it's a system app that you think is the suspicious one and you can't disable/uninstall it via my app because you don't have a rooted device, check how to (try to) disable/remove it via this tutorial.

      3. Testing if all is well now: Use your device for a while (depending on how often and on which cases you've seen the bad behavior). If indeed you can't see this issue anymore, you've probably found the real nasty app, and you can remove it if you wish to. If you still want to use the app, try to check the settings of the app to see if this behavior can be turned off, or contact the developer for help.
      If it's not the app that causes nasty stuff, you can restore the app (run it, enable it, or re-install it, depending on what you did on previous step), and repeat from first step again.

      4. Optionally help others: Now that you don't have the nasty app anymore, I suggest you to go to the app's page on the Google Play Store, and consider to write a review warning other people about it, and also report about the app, so that other people will think twice before using the app, and that the developer should change the app so that it won't happen again.
      3
      I've published a new version of the app, this time with a small tool for managing available APK files.
      For now, it has only the basic features that I've found (relatively) easy to add.

      Please tell me what you think, and if you've found a bug.
      3
      i am still thing a dark cardui is awesome if you need any help i am here to help i can make dark cardui easily as your app already have black theme

      ok, it took me quite a while since I'm not a specialist in drawing and designing, and this is what I got (attached).
      Does it look ok?

      It's just that I never saw such a theme before, and there are no guidelines around for it, so I tried to mimic the same things being done on the normal cards-UI theme, together with the normal holo-dark theme...