Some essential high Threatmodel privacy apps for Android, and some recommendations.
Following: Vanadium, Sentry, Duress,
Some apps to use, either for privacy-respecting services, or better frontends for established networks like Instagram, that limit tracking.
Lightweight Android client for decentralized social networking, featuring material design, support for photo, video, emoji, lists, drafts, notifications, multiple themes and timelines.
A good app for Mastodon, the decentralized social network ("Twitter alternative")
An app for the Reddit Alternative Lemmy
PixelDroid is a Free and Open Source Android client for 
Pixelfed, the federated image sharing platform.
A privacy-respecting app for the feature-rich decentralized image sharing Platform Pixelfed ("Instagram alternative")
Some apps are aweful, while their services are needed. You can often use them in a browser, but apps have advantages like subscriptions, settings, speed e.g. These Apps minimize tracking!
Transportr is the public transport companion that respects your privacy and your freedom. Transportr is a non-profit app developed by people around the world to make using public transport as easy as possible wherever you are.
Travel with Trains& Busses without being tracked for example by "DB Navigator" e.g.
Google Maps, Google Drive, Google Play services, Windows Connect (or how its called?), you dont need that.
Navigation app with offline and online OSM maps, turn-by-turn voice guidance, cycling and driving modes, GPX tracking, POI search, and monthly updates.
(OSMAnd~ from F-Droid)
Best opensource Openstreetmap navigation app with a ton of features. You can configure everything how you want it, the presets are good too though. Create your own routing files, use online routing, develop plugins,... its very open.
Open-source, decentralized alternative ensuring data ownership with encrypted communication and peer-to-peer sync, void of central server reliance.
Decentral file-synchronisation between your devices, no servers, easy setup. Works on all platforms.
- Install on both devices
- Show QR code of other device and scan with your phone
- Say what folders should be synced and how
Shelter is a Free and Open-Source (FOSS) app that leverages the “Work Profile” feature of Android to provide an isolated space that you can install or clone apps into.
Managing app for the android work profile, to isolate apps from the main storage. These apps can use contact and storage permissions without being able to stalk you. Very important for everyone.
Scrambled Exif (pronounced eggsif) helps you remove the metadata in your pictures before you share them.
Remove Exif metadata from images through the share dialogue, before sending them. This could be your GPS location, device model or other identifying values.
Imagepipe - Reduces image size and removes exif-tags when sharing images on android devices.
Same purpose as ScrambledExif but with powerful JPEG compression integrated to make images smaller
Search the surrounding for GPS-tracking devices that may be used for surveilling you. The chance of it being used is pretty low most of the time, so be sure about your threat model, the app is beautiful anyways.
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