Learning
Get smarter: 60+ apps, all free and open source.
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Linux Command Library
Look up Linux commands and terminal tips offline
Sugarizer
Dozens of learning activities for children, from the OLPC Sugar platform
Learn
A simple picture-and-sound learning app for young children
Dharmik
Read the Bhagavad Gita with commentaries and audio
Turtle
Draw with Python-style code and watch a turtle trace your shapes
Bodhi Timer
A quiet full-screen countdown timer with meditation bell sounds
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
bearings-lsd
Psychedelic Prep. and Integration Guide
BOINC
Lend your phone's spare power to science
PSLab
A pocket science lab on your phone
Sky Map
Point your phone at the sky to name the stars
jidoujisho
Learn a language by tapping words in video, books and manga
Look4Sat
Know when the space station flies over you
Moodle
Your school or university coursework in your pocket
whoBIRD
Name the bird you can hear, right where you stand
microMathematics Plus
Do maths on a worksheet and watch the graphs update
phyphox
Turn your phone's sensors into a physics lab
Breathly
Guided breathing to calm down or fall asleep
QuickDic
Offline dictionaries for dozens of language pairs
Audio Analyzer
See the sound around you as a live spectrum
Atomic - Periodic Table
The periodic table, offline and in detail
Binaural Beats
Tone sessions for sleep, focus and relaxation
iNaturalist
Find out what plant or animal you just saw