Используйте приложение APKPure
Историческую версию Proj Code Reader - Read code & Decompile можно получить на Android
Just a code reader
This is a code reader which is support Android Studio project & Eclipse project. You can read any code in the APP. Not only that, decompile normal APK can be used when you really really want to see some feature how to work. If you want to record something, note is in this APP.