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Get smarter — 60+ apps, all free and open source.
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In testing
BOINC
Lend your phone's spare power to science
AnkiDroid
Remember anything with smart flashcards
Hoshi Reader
Read Japanese books and look up any word instantly
Sky Map
Point your phone at the sky to name the stars
PSLab
A pocket science lab on your phone
Driftly
Keep an eye on your class attendance
Git Coach
Learn git commands without breaking anything
Flashcards
Study smarter with AI-assisted flashcards that stick
Light Island Timetable
See your class schedule and keep it synced across devices
Medito
Meditation and sleep sessions, free forever
Look4Sat
Know when the space station flies over you
Free Dictionary
Look up word meanings using free, open dictionary data
Kiwix
Wikipedia in your pocket, no internet needed
Flash Deck
Make flash cards and quiz yourself until it sticks
Wikipedia
The official app for the free encyclopedia
Celestia
Fly around the real universe
Oppia
Free, friendly lessons that work even without internet
phyphox
Turn your phone's sensors into a physics lab
ProcrastiLearn
Turns your doomscrolling habit into vocabulary practice
Moodle
Your school or university coursework in your pocket
iNaturalist
Find out what plant or animal you just saw
Breathly
Guided breathing to calm down or fall asleep
AttendMate
Track your classes and see how many you can safely skip
QuickDic
Offline dictionaries for dozens of language pairs