phyphox

Perform physics experiments with your phone. (by the RWTH Aachen University)GPL-3.0-only

HTTP Request Shortcuts

Submit HTTP Requests from Shortcuts on your Home ScreenMIT

OpenKeychain: Easy PGP

Encrypt your Files and Communications. Compatible with the OpenPGP Standard.GPL-3.0-or-later

xBrowserSync

Browser syncing as it should be: secure, anonymous and free!GPL-3.0-only

MoneyBuster

Multi-project shared budget manager able to sync with self hosted FOSS servicesGPL-3.0-or-later

Trail Sense

Use your phone's sensors to assist with wilderness treksMIT

Unciv

Open source 4X civilization-building gameMPL-2.0