AIDE for Android allows you to write and run Android apps on your Android device. It is on Google Play. You can write and run an app for free, although certai

AIDE for Android allows you to write and run Android apps on your Android device. It is on Google Play. You can write and run an app for free, although certain functions need an in-app purchase. It is decent enough, and highly rated, as it's one of the best ones there. The nice thing is you can write and run apps on the device itself. Of course, if someone wants to seriously program Android, they would get a computer, Android Studio and such.