F-Droid Search: clock

A mix between a calendar and a clock that makes you wait faster.GPL-3.0-only

Astronomically correct 24-hour clock: the Sun is the hand, the star sky turnsGPL-3.0-or-later

Private tools: deterministic passwords, 2FA codes, calculator and clock.BSD-3-Clause

Live wallpapers with transitions, wake effects, a wallpaper clock and playlists.MIT

Full-screen digital clock and dock screensaver for old Android phones.MIT

AMOLED-black monochrome binary-clock home-screen widgetGPL-3.0-or-later

Custom always-on display with a clock, battery, notifications and music statusMIT

Minimal launcher with clock, weather, fast app search, and gesture navigation.GPL-3.0-only

Board game timer for the whole table, with a clock facing each playerGPL-3.0-or-later

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

Disable alarms with a QR scannerGPL-3.0-only

Sunlight and moonlight information (clock, alarms, tiles, and widgets).GPL-3.0-or-later

Alarm, clock, timer and stopwatch modeGPL-3.0-only

Quick shortcut for setting alarms based on your preferred amount of sleep.GPL-3.0-only

Modern and powerful clock, alarms, timer and stopwatch.GPL-3.0-or-later

Fast, minimal, monochrome home screen. Type to launch. No ads, no tracking.MIT

A text-only, black and white launcher with app timers and a weekly reviewGPL-3.0-or-later

Presentation timer for speakers at live eventsGPL-3.0-or-later

A simple notepad and to-do app with an excellent navigationGPL-3.0-or-later

The one open-source chess platformGPL-3.0-or-later