Bluemoon

Open source, privacy friendly menstruation tracking app. Your period, your data!GPL-3.0-or-later

Mensinator

Tailored Period Tracking, Total Privacy—Your Period, Your Control.MIT

log28

A simple no-frills period trackerLGPL-3.0-only

Periodical

Menstrual/period calendarGPL-3.0-or-later

HIIT

Interval timer0BSD

Geological Time Scale

Display the geological time scale of the Earth's history.GPL-3.0-or-later

Average data usage widget

Check your data usage and compare it with an indicator of the average usage.MIT

drip. menstrual cycle and fertility tracking

Open-source, non-commercial and leaves your data on your phone.GPL-3.0-only

Keep Alive

Notify others if you haven't used your device in a given period of timeApache-2.0

Subz

Subscription and contract management with notification function.MIT

Your local weather

Application displays current weather and location wherever you are.GPL-3.0-or-later

DataStopwatch

Stopwatch, but for data usageGPL-3.0-or-later

Simple Money Tracker

Yet another personal accounting appMIT

Money Tracker

Track your money easily and fully freeMIT

Wi-Fi Reminders

WiFi based remindersGPL-3.0-or-later

Hauk

Self-hosted real-time location sharingApache-2.0

Data Monitor

Track all your data usage - at one placeGPL-3.0-only

Alex vs Bus: The Race

A platform runner game in which Alex needs to catch the bus on timeGPL-3.0-or-later

LifeDots - Diary in 8 dimensions

Diary in 8 dimensionsGPL-3.0-only

PasteBin

Client application for Ubuntu pastebinGPL-3.0-only