Okay, here is the formal release of my Android app "Zero". It does nothing. You launch it and it just immediately quits. It is literally the Android Kotlin sample project with a blanked icon and the single line `finish()` added to MainActivity.onCreate.
Precompiled apks are available. You may find this useful if you want to do nothing.
https://github.com/mcclure/android-zero/?tab=readme-ov-file#zeroapk
Hey, I think I installed that app in 2011, it was calling itself “SUPER RAM CLEANER” at the time though