Learning
Get smarter: 60+ apps, all free and open source.
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AnkiDroid
Remember anything with smart flashcards
Hoshi Reader
Read Japanese books and look up any word instantly
Linux Command Library
Look up Linux commands and terminal tips offline
Flashcards
Study smarter with AI-assisted flashcards that stick
OpenBot
Turn your old phone into a robot's brain
Look4Sat
Know when the space station flies over you
Arity
A scientific calculator that draws your functions
jidoujisho
Learn a language by tapping words in video, books and manga
Kiwix
Wikipedia in your pocket, no internet needed
BOINC
Lend your phone's spare power to science
Medito
Meditation and sleep sessions, free forever
Kanji Dojo
Practise writing Japanese characters
Sky Map
Point your phone at the sky to name the stars
Oppia
Free, friendly lessons that work even without internet
phyphox
Turn your phone's sensors into a physics lab
microMathematics Plus
Do maths on a worksheet and watch the graphs update
Aucards
Cards to show when speaking isn't possible
Turtle
Draw with Python-style code and watch a turtle trace your shapes
Schulrechner
The school calculator, on your phone
Driftly
Keep an eye on your class attendance
Binaural Beats
Tone sessions for sleep, focus and relaxation
Atomic - Periodic Table
The periodic table, offline and in detail
Audio Analyzer
See the sound around you as a live spectrum
ProcrastiLearn
Turns your doomscrolling habit into vocabulary practice