Apps without tracking

No analytics, telemetry or tracking SDKs.

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OpenStop

The app for collecting barrier data in local public transport.
- Navigation
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
OpenStud for InfoStud

Unofficial client for Sapienza University's InfoStud
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
OpenSyncedLists

Sort, tag & sync your lists – encrypted on your own server.
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
OpenTasks

Keep track of your list of goals
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
OpenTopoMap Viewer

Online client for maps from OTM project, import GPX and show own location
- Navigation
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
OpenTracks (Non-reproducible)

A sport tracker buddy that respects your privacy.
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
OpenTracks (Reproducible build)

A sport tracker buddy that respects your privacy.
- Health & fitness
- FOSS
- Free
- Paid
- No ads
- No tracking
- Android only
Google Play F-Droid Zapstore
OpenTTD

A simulation game based on the popular game "Transport Tycoon Deluxe"
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
OpenTune

A YouTube Music client with Material Design 3, for Android
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
OpenUSOS

An open source unofficial USOS app, for students in Poland
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
OpenVine

Record and stitch 6-second video clips. Offline and private.
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
OpenVitals

Private Health Connect dashboard. No account, no cloud, no ads.
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
OpenVK Legacy

OpenVK Legacy is mobile client for retro devices running Android >2.1.
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
OpenVPN for Android

OpenVPN without root
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
OpenWebWeaver

Interact with WebWeaver based online learning platforms
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
OpenWOL

OpenWOL is a simple, private and efficient Wake-on-LAN app for Android.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
OpenWrt Manager

Manage your OpenWRT device from your phone
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid IzzyOnDroid GitHub Zapstore
openZinkBooth

An easy-to-use photo booth app for capturing and printing with HP Sprocket
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
OPMT

A Strategy Board Game.
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
OPNsense Manager

Manage OPNsense firewall: monitor, configure rules, view logs & services
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Opus 1 Music Player

Feature enhanced sibling of the "Unpopular Music Player"
- Multimedia
- FOSS
- Free
- Paid
- No ads
- No tracking
- Android only
Google Play F-Droid Zapstore
Ordunte: Karrantza weather

Weather at your location and four hyperlocal Karrantza/Ordunte sections
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Organic Maps・Offline Map & GPS

Get reliable offline maps with GPS navigation for hiking, cycling, and travel.
- Navigation
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore Accrescent
Oriens

Roman Timekeeping (Unequal Hours) Widget
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
oRing - Reminder

Oring-Reminder is a thermal contraception manager
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Orion Master

Native 1oom port of Master of Orion (1993). Requires your own LBX files
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Orion Viewer - Pdf & Djvu

Orion Viewer is pdf, djvu, xps, tiff and comic books (cbr, cbz, cbt) file viewer
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Oscilloscope

Audio Oscilloscope and Spectrum
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Oshi Uploader

an Android app that can upload to any Oshi instance
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
OSM Dashboard (Offline)

OpenStreetMap dashboard for OpenTracks without internet permission
- Navigation
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid Zapstore
OSM Dashboard for OpenTracks

OpenStreetMap dashboard for OpenTracks
- Navigation
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid IzzyOnDroid Zapstore
osm2gmaps

Convert coordinates and map links between formats, services and apps
- Navigation
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
OSMfocus Reborn

Examine OpenStreetMap (OSM) elements to "focus" your view of the map
- Navigation
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
OSMTracker

GPS Track Recorder
- Navigation
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Osram Remote

An app to turn your phone into a remote for lights
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
OSS Tracker

keep track of updates to Open Source Applications directly from the Repositories
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
OSS-Dict

Offline Dictionaries
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid IzzyOnDroid GitHub Zapstore
OTG Master

Mount VeraCrypt and LUKS encrypted USB drives on non-rooted Android
- Security & privacy
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Otic

Minimal Android app to stream microphone input to the local network.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Otoscope

Ad-free viewer for WiFi otoscope cameras.
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
OUI Lookup and Database

Find a device's manufacturer by its MAC address and browse OUIs assignments
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
OuterTune

Material 3 local Music Player and YouTube Music client
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
Outfield

Remote control for Open Broadcaster Software (OBS).
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Outline

A VPN or proxy client
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Outline Keeper

The application for managing Outline VPN servers
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Overchan (fork)

Browse multiple imageboards
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Oversec

Privacy for All Apps! Encrypt and Disguise Messages in All Your Apps!
- Android only
Google Play Aurora Store F-Droid
OW Camera 2 For Pebble

Control your phone's camera remotely from your Pebble smartwatch
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore