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1,550+ free, open-source Android apps, and growing.
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In testing
Oksigenia SOS
Send your GPS location by text when you're in trouble outdoors
openCook
Photograph a cookbook page and get a recipe
openScale
Track your weight and body measurements over time
Open Track Editor
Edit your GPS tracks and routes right on your phone
Olvid
Encrypted messaging without a phone number
Hidroly
A gentle reminder to drink some water
Notally
A beautiful, minimal notes app
OMGSoundboard
Build your own soundboards and play sounds at the tap of a button
MineStableDiffusion
Make AI art on your phone, offline
OnionShare
Share files straight from your phone over Tor
Onloc
Track your own devices on your own server
OONI Probe
Test whether websites and apps are blocked on your network
PDF Unlocker
Remove PDF passwords privately, right on your phone
5G Switcher
Force your phone onto the network you want
Coffee
Keeps your screen awake while you need it
Jotter
A notes app that stays out of your way
OpenDocument Reader
Open Word, Excel and OpenOffice files on your phone
OpenStop
Answer simple questions to map how accessible public transport stops are
Open Food Facts
Scan a barcode to see what is really in your food
openHAB
Run your smart home from your phone
OpenIoTHub
Reach devices at home from anywhere
OpenList Mobile
Turn your phone into a file server for your other devices
OpenOrienteering Mapper
Draw and edit orienteering maps, and track your position on them
OpenRCT2
Build and run your own theme park