GrapheneOS Starterpack

You just add your main audiobook folder and every folder in there will be recognised as a single book. That keeps your library simple and tidy.

Less customizable than FlorisBoard but with autocorrect

SMS are insecure. But if you don't have internet, you can use this app to write encrypted SMS with a contact that also uses it.

A modern Android app for installing and managing APK packages with split APK support, silent install via Shizuku, and VirusTotal malware scanning.

New open source PDF editing tool. Very promising but might still have bugs.

Warn if you are followed by airtag or similar. Use if you fear that people want to surveill where you are.

Promising new calendar application with native sync capabilities for most common providers.

Alternative to Thunderbird Android. Most features are paid for but it has slightly more. For advanced users.

Flash .iso files to usb sticks, like for installing a Linux distro

Store Files in an encrypted container, works with syncthing and goCryptFS on another machine

Use Passkeys like Nitrokey, Solokeys or Yubikey

Add audio effects to most music players, like Equalizer, Soundstage wideness or dynamic bass boost.

Alternative to Fossify Gallery. Very different, modern and secure. Likely to become the default Gallery in GrapheneOS (with reduced features) (state 2026)

For sharing passwords, links etc. without any network connection.

Needed for sharing files between main profile, private space or work profile. Also useful for bad apps that don't allow exporting files normally.

Needed for recording loud concerts etc.

When using multiple user profiles

Unofficial open source app for real-time emergency alerts, supporting over 270 CAP alert feeds worldwide, written in Flutter, and free of ads.

Share a map link with Geo Share and the app will open it in another installed map app.

Music player for android, in accordance with author's vision of how a music player should look like.

An Android Client for the magic-wormhole protocol.

KeePassDX is a material design KeePass client for managing keys and passwords in an encrypted database for your Android device.

not amazing but useful conversion features

Discover youtube music with way less tracking. Use "Seal" to download to your device

works offline but full of ads. needed to "sign" PDFs (Add an image), fill forms etc. Files can be shared to "SaveLocally" to avoid the locked "export" feature

Identify bird sounds in real time with this Android version of BirdNET. Bird sound recognition for more than 6,000 species worldwide.

very secure but not very private. good for progressive webapps (PWAs) you can place on the screen. This avoids installing apps which have way more access over private information

Privacy-conscious open-source clock, based on AOSP Clock.

Combine with "OpenKeyChain" for PGP support.

SoundAura is an open source ambient sound app. It does not include any audio tracks to save on download size, but allows users to add local files from their device and play any (reasonable) number of them concurrently, with individual volume controls for each track.

offline, few things missing from ImageToolbox like perspective, contrast/brightness

SherpaTTS is an Android Text-to-Speech engine based on Next-gen Kaldi using Piper or Coqui voices.

Downloader for tons of platforms, pretty much everything.

The app is free on F-Droid and on GitHub but you can buy it on the Google Play Store to support the developer.

Sync your contacts offline to a folder, which is synced with Syncthing. Runs in the background and just works

PGP for Android. Not only useful for email end-to-end encryption, but also for using "encrypted inbox" which some providers like mailbox.org offer

Öffi is an Android app that tells you where and when trains and buses go, including delays and replacement bus services for more and more transport authorities in Europe and worldwide.

Get apps directly from source. Only from trusted developers! Useful for apps that are not released on F-Droid.

Free the internet from data collection with Mullvad VPN – a service that helps keep your online activity, identity, and location private. Only €5/month.

Monerujo is the first app for managing and using Monero wallets on Android. It is a lightwallet: it uses remote nodes for synchronizing to the Monero blockchain while keeping all your private data on your device.

Signal but better. Combine with MollySocket and a unifiedPush distributor like "Sunup" to save batterylife without Google tracking

A totally free of cost and ads PDF documents reader.

Markor is a TextEditor for Android, versatile, flexible, and lightweight. Markor utilizes simple markup formats like Markdown and todo.txt for note-taking and list management. It is versatile at working with text; it can also be used for keeping bookmarks, copying to clipboard...

The official Syncthing App is not maintained anymore. Works really well to synchronize files between devices, no cloud needed

Send files over LAN. Also works if you connect to another phone via hotspot, then it is very fast.

• Set preferred browser: Always list all browsers, only list native apps, always list selected browser, only list whitelisted browsers

LibreTorrent is a Free as in Freedom torrent client for Android 4 and later, based on libtorrent. Download and share files directly on your device.

Introducing Fossify Contacts - the next evolution in contact management. Poised to redefine how you manage your contacts, our app combines simplicity with advanced features, tailored for both personal and professional use.

Breezy Weather is a weather app with a strong focus on design, with a simple, clean UX, smooth animations, and Material Design all over, plus lots of customizability.

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