Oversec
Privacy for All Apps! Encrypt and Disguise Messages in All Your Apps!GPL-3.0-or-later
phyphox
Perform physics experiments with your phone. (by the RWTH Aachen University)GPL-3.0-only
My Expenses
Easy to use personal finance manager: rich functionality and Open SourceGPL-3.0-only
Catima — Loyalty Card Wallet
For your barcodes, memberships, loyalty programs, coupons and tickets.GPL-3.0-or-later
PixelKnot: Hidden Messages
Have a secret that you want to share? Why not hide it in a picture?GPL-3.0-only
Scrambled Exif
Remove the metadata from your pictures before sharing themGPL-3.0-only
Jami
Audio & Video Calls / Chat
Take Control of your Communication!GPL-3.0-or-later
Simple File Manager Pro
Handy file explorer for easily searching or organizing your files and foldersGPL-3.0-only