F-Droid Search: gpl-3.0

Private, offline phone & contacts app that helps you keep up your bondsGPL-3.0-only

Gym calculator: 1RM, plates, warm-ups, strength scores, records, rest timerGPL-3.0-or-later

Time display for nerds: Unix, sidereal, binary clocks & more.GPL-3.0-or-later

Multilingual YT Music client with optional Glass effect (BETA)GPL-3.0-only

Overlay and audio alerts for BLE bike radars. Offline, no account, no cloud.GPL-3.0-or-later

Change the key of any song, keep the tempo. Tuner, loops, speed. Offline.GPL-3.0-only

Silence your phone automatically when using selected apps.GPL-3.0-only

Configurable widget for the monitoring of your WiFi connection detailsGPL-3.0-only

Calm, readable sudoku with hints that teach. No ads, no game over, offline.GPL-3.0-or-later

Ambient sound mixer for android inspired by blanketGPL-3.0-only

Learn Japanese from zero in about five minutes a day.GPL-3.0-or-later

Offline 24-week MMA preparation trainer. No ads, no tracking, no cloud.GPL-3.0-or-later

Imageboard client for Android 11+GPL-3.0-or-later

Open-source 2FA authenticator. Encrypted on-device. No accounts.GPL-3.0-or-later

Dual-pane file manager: archives, SFTP, SMB, WebDAV, S3, restic, JellyfinGPL-3.0-only

Idle RPG: train skills, fight dungeons, craft gear. No ads, no accounts.GPL-3.0-only

Offline-first navigation with terrain-aware eco routingGPL-3.0-or-later

Samsung One UI-style Modes and Routines automation engine for Android.GPL-3.0-or-later

Launcher with deep customization on a single screenGPL-3.0-only

Fast, minimalist local music player, 100% offline.GPL-3.0-or-later