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[APP][6.0+] Koler[0.3.1] - An open source phone app

11 posts
Thanks Meter: 25
By NuclearGandhi, Junior Member on 23rd April 2019, 08:58 PM
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A uniquely stylized phone app, with customizable features - for Android.


This is an app me and my friend made. We have both dedicated a lot of time towards developing and designing this app and we would be grateful if you give it a shot, and review it. This app is not finished, which is why we would be even more grateful if you could help us develop it - help us make an open source, customizable, simple, fit for anyone - phone app.



Call Interface

Our ongoing call UI makes everything easier.
Its uses swipes and minimalistic design, making everything more beautiful, intuitive, yet still productive.

In an incoming call, you can do the following before answering:
  • Reject and send the call a SMS
  • Reject in a specified amount of seconds
  • Answer in a specified amount of seconds

In an ongoing call you can:
  • Reject in a specified amount of seconds


The app's main goal is to be more intuitive and comfortable,
For that reason, the swipes are the main way of controlling the app, making it much smoother to use.
  • Dialer
    • Call - Swipe up
    • Delete number - Swipe left
    • Collapse dialer - Swipe on contacts list
  • Incoming Call
    • Open keypad - Swipe up
    • Reject/End - Swipe left
    • Answer - Swipe right
    • Send SMS - Swipe up on the send SMS overlay


You can download the app in the Google Play Store or go to our Github page - under Releases.


You can help us by contributing to our code, and submitting any bugs or new features in our GitHub page.

Please also consider donating to support our work.

XDA:DevDB Information
Koler, App for all devices (see above for details)

NuclearGandhi, RoeiEdri, Chooloo
Source Code:

Version Information
Status: Beta

Created 2019-04-23
Last Updated 2019-06-12
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25th April 2019, 05:55 PM |#2  
Senior Member
Thanks Meter: 22

First thanks for sharing the work with community. I am a long time user of exDailer and looking for alternate options as its not actively in development.
Installed Koler app and tried to use the app's Dialer features only. (Because the current google phone app provides multiple features I needed eg: bubble option when not in active screen).

Few observations:
1. Dial pad needs both numbers & alphabets to search a contact by number/name.
2. Swiping on contact is not working - the app switching between recent/contacts/excel tabs.
3. Animations and interface are fluid (I like it)
Looks like the focus of this app is on Phone interface. If possible please consider adding Dailer functions to it to make it complete.

Thank you.
25th April 2019, 06:37 PM |#3  
Thanks Meter: 3
This app is very good ,, best replacement to stock Samsung phone dialer coz Samsung is slow ,,, yet some problems in koler

1. Incoming call sometimes has problem ( while playing landscape game)
2. After receiving call when in calling ui pressing home button disappears the call ( call is yet connected but can't do anything = no notification panel to hang up or anything )
3. Number / name at a time search in phone dialer which is best
4. ( request for feature ) to see most frequently called when you search any name.

Hoping for a fix soon
25th April 2019, 08:28 PM |#4  
arvindgr's Avatar
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Flag Tamilan
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White is painful to eyes. Is dark mode available?
25th April 2019, 08:31 PM |#5  
YeQais's Avatar
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Flag Narayanganj
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@NuclearGandhi Bro Why not make this app kitkat (API 16+) support? cause many of us have phone which is old but no custom rom .... those stock user atleast can change there stock dialer app by this..... hope you will think about this
26th April 2019, 03:51 AM |#6  
Junior Member
Thanks Meter: 3
App not found
Hi, I saw your post and thought of giving the app a try but the problem is Im not able to find the app on play store. I tried opening the link to your app but it says "Item not found. Im from India, maybe its a region-specific problem. So can you upload the apk here? Thanks
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26th April 2019, 04:30 AM |#7  
Thanks Meter: 3
He seems from India too...

Nvm look at early access section in play store
26th April 2019, 06:13 AM |#8  
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Flag Chandigarh
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Very nice app, maybe google can learn from the design of this app.

Maybe adding favorite contacts and changing dial tones could be an option too.
26th April 2019, 06:48 AM |#9  
Zeuszoos's Avatar
Senior Member
Thanks Meter: 231

I'm in the U.S. and when I try the Google Play Store link it says, "Item Not Found". It seems its been delisted.

26th April 2019, 07:02 AM |#10  
Junior Member
Thanks Meter: 2
Can I get apk?(not able to find it on play store)

Has any flashed it with zip file?
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26th April 2019, 07:36 AM |#11  
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Flag Barnstaple
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Not available in UK either
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