[Q] How to install2 copies of the same app

I believe to do this you would need to rename the package names. (This is not the same as simply renaming the actual apk file).
To do this you need to decompile the apk using apktool, then edit the package name that has been declared in the AndroidManifest.xml to something different than the original. Finally you could recompile the apk. Then you should be able to install both the original app and the one you modified.

Another easier way to do this would to use the multiuser function in newer roms. Im not sure if any other roms have it, but I can confirm that my latest Beanstalk build contains the feature. Essentially it allows you to create multiple users on the phone. Then at the lock screen you are given the option to pick the user account that you want to enter (similarly to how multiple users works on a PC). Each user is given their own data space.

tronic44522 said:

i used apktool to decompile. then i edited manifest name and recompiled using apktool.

no when i try to install modified app i get a problem parsing the package app.

any ideas?

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Try signing the apk with apk signer. (Available in the play store)

Sent from my HTC Desire using xda app-developers app