The best gps tester I've found, tried all the open source and always come back to this one. It includes a compass, HUD display, sun rise & set times, among other features.

Localized password manager that integrates into Android's autofill, can ublock via password, system ublock, or biometrics.

This is a simple app that gives you two additional gestures to the gesture navigation bar. One for a tap and another for long hold, also separate ones for lock screen. Could have more functionality but great for tap for back and long hold to turn screen off. It does use accessibility feature and overlay over other apps.