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Get smarter: 60+ apps, all free and open source.
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Adapt It Mobile
Help translate between languages that are close cousins
Algo Phantoms
Practice coding problems and learn data structures on your phone
AnkiDroid
Remember anything with smart flashcards
Arity
A scientific calculator that draws your functions
Atomic - Periodic Table
The periodic table, offline and in detail
AttendMate
Track your classes and see how many you can safely skip
Aucards
Cards to show when speaking isn't possible
Audio Analyzer
See the sound around you as a live spectrum
bearings-lsd
Psychedelic Prep. and Integration Guide
BetterUntis
A nicer app for your school timetable
Binaural Beats
Tone sessions for sleep, focus and relaxation
Bodhi Timer
A quiet full-screen countdown timer with meditation bell sounds
BOINC
Lend your phone's spare power to science
Breathly
Guided breathing to calm down or fall asleep
Celestia
Fly around the real universe
ChemSearch
Look up chemical compounds and their safety information
Dahdidahdit
Learn Morse code by ear, with lessons that adapt as you improve
De Fide
A Catholic prayer app with Bible, rosary and breviary that works offline
Dharmik
Read the Bhagavad Gita with commentaries and audio
dikt
Look up words offline, with everything in thumb's reach
Dileit
Look up English words and drill them with flashcards
Driftly
Keep an eye on your class attendance
Dymka
Learn Ukrainian and get ready for your ZNO exam
Engrisk
Learn English with lessons, flashcards, and progress tracking