Size Does matter – Crunching Bits
Use OptiPNG/ PNGCrush on any .png images you have in your app – that can reduce the image
file sizes by about 10-15%, which can be a significant part of your overall app size.
use an audio editor such as Audacity to reduce the size of any audio as much as possible.
Going for mono OGG Vorbis files is often best, and sounds plenty good enough on a phone.
Double check your minSdkVersion in the manifest.
Don’t forget to make debuggable=false in your Manifest
Testing your apps:
let your friends/testers/general-users test your app to see if it is self-explanatory
Test your app on an emulator with your minSdkVersion
Points to be considered, if you are going to provide updates in your app:
A “Whats new in this version’- dialog/information don’t forget to increase versionCode and versionName in your manifest
Adding code into source control if it’s not already. While issuing updates and fixes at some point, and source control can play a big role in that.