IDEs/Source Editors (2 programs)

1. 

   Apk Editor Pro : Apk Extractor & Installer

   • 3.8

   • Free

   Free APK extractor app

   License

   Free Download

   Language

   English

   Platform

   android

   PROS: Lets you parse APK files. Has three decompilers to choose from.

   CONS: Parsing a file sometimes takes too long.
2. 

   SetEdit SettingsDatabaseEditor

   • 5

   • Free

   Code-level app setting editor

   License

   Free Download

   Language

   English

   Platform

   android

   PROS: Straightforward to use. Works on pretty much any app. Edit hidden parameters.

   CONS: Meant for advanced users.