Science & Education Apps
368 free & open-source apps — updated automatically every day.
AstroClock v1.0
Astronomically correct 24-hour clock: the Sun is the hand, the star sky turns
TransektCount v5.1.6
A butterfly monitoring app for transect counters.
TourCount v3.8.4
A butterfly monitoring app for species-specific registering of butterflies in Eu
Fractals by Girino FOSS v1.2.0
Explore Mandelbrot and related fractals offline
Energize v0.14.0
Track your nutrition easily and fast.
Aalener Optik-Formelrechner v1.13
Quick and easy calculate a bunch of optical functions
NerdCalci v4.9.7
Calculator for nerds with variables, syntax highlighting, and file sessions
Marlin v1.3.0
Identify marine species on the spot and keep a personal sightings life list
Heliodos v1.1.0
AR overlay of the sun's and moon's path on your camera
Fortune Telling v1.0.6
Offline Western astrology, I Ching divination, and Chinese daily almanac
Egyptian Writer v24.08.2026@0.1.1
View, write and export ancient Egyptian texts.
Drinkable v1.60.1
Explore and create cocktails with ingredients from home.
Converter NOW: Unit Converter v4.6.3
A simple, immediate and fast unit converter!
T2DECODE v1.0.3
Offline interactive learning platform for IT, Cybersecurity, and Networking.
GeoNotes v1.8.0
A simple app to create georeferenced notes.
Bubble v3.5
Spirit level and ruler
StudiPassau v2.1.4
Access to the Online Portal for Students at the University of Passau
MorbidMeter v3.2.0
Life expectancy widget
MA Astronomy vv2.6.5
An AR night sky viewer
hJOP Driver v2.5
hJOP Driver allows user to control model railroad via hJOPserver
FloFla Cards v1.0.32
FloFla Cards – Passive learning with your phone! 🎓📱
PitchVis v1.30
Real-time visualization of musical pitches from live audio
Let's Bend: Harmonica Tuner v3.8.0
Harmonica tuner for learning bending techniques with real-time visual feedback.
CalcYou v5.3
Privacy Focused Calculator app built with MD3