Notes
514 open source Notes apps
Todosian
APK
Todosian is an Android todo app for Obsidian users. It manages todo lists stored as Markdown files inside your vault (or any folder you sync to your phone). Todosian reads and writes your existing .md files directly. There is no database import, no account, and no built-in sync. How it works - Connect a folder using Android's Storage Access Framework (SAF) - Each Markdown file becomes a category - Todos use standard Markdown checkboxes: - [ ] and - [x] Features - Add / edit / toggle / delete todos - Create / rename / delete categories (files) - Optional support for Obsidian Tasks plugin metadata (dates, priority, recurrence) - Material 3 UI, dynamic color (Android 12+) - Offline-first and privacy-focused (no analytics) Notes - Todosian modifies your Markdown files directly. Keep a reliable backup of your vault/folder. - Todosian is independent and not affiliated with Obsidian or the Obsidian Tasks plugin.
F-DroidGitHub
Total Recall
APK
A privacy-focused, open-source photo journaling app that helps you capture and organize your memories with photos, text, and optional location data. Total Recall features a clean, intuitive interface for creating entries with: • Photo capture using modern CameraX API • Text descriptions and notes • Optional GPS location tracking (using native Android LocationManager) • Full-text search across all entries • Chronological browsing of all memories • Secure local storage with no cloud dependency Key privacy features: • All data stays on your device • No external servers or data transmission • Optional location tracking that you control • No analytics, tracking, or advertising • FOSS-compatible dependencies only Perfect for daily journaling, travel documentation, project notes, or any time you want to remember a moment with context. All dependencies are open source and F-Droid compatible, with no proprietary Google Play Services required.
F-DroidGitHub
Traductor Softcatalà
APK
Client for the Softcatalà Catalan on-line service.
F-DroidGitHub
TriliumDroid
APK
Cross-platform hierarchical note taking application with focus on building large personal knowledge bases.This is a port of the desktop application Trilium Notes. These features of the original are implemented:Synchronisation with sync server / desktop appNotes can be arranged into arbitrarily deep tree, where single notes can be placed into multiple places in the treeWYSIWYG note editor based on CKEditorFast and easy navigation between notesAutomatic note versioningNote attributes and relations for organization, querying and advanced scriptingNote encryption with per-note granularityCanvas notes powered by ExcalidrawGeo map notes powered by Leaflet using OSM dataNote map view (context-based / all notes)Scripting API to automate tasks or send notificationsIn-app user guide based on TriliumNext documentationThe following features are only available in the desktop client. They will be implemented in the app at a later time.Support for editing notes with source code, including syntax highlightingFull text searchSharing (publishing) notes to public internetRelation maps and link maps for visualizing notes and their relationsREST API for automationScales well in both usability and performance upwards of 100000 notesEvernote and Markdown import & exportWeb Clipper for easy saving of web content
GitHubIzzyOnDroid
Trime
APK
Trime is originally a frontend of open-source Android Traditional Chinese IME, based on RIME input method framework and written in Java/Kotlin with JNI. It is designed to protect the native language of various local dialects of Chinese and is a universal shape-based and phonetic-based input method platform.
F-DroidGitHub
Trollslate
APK
Trollslate transforms your text into barcode looking text. Have fun asking your friends to figure out what's written. Don't write too much slurs, it's not making it any funnier. Use the gyroscopic feature to select the roll angle if available. Dark theme is enforced but the barcode-text-page is in light theme for contrast purposes. Please consider increasing the screen's brightness if you don't see anything. Some screens work better than others but it should work fine on yours regardless
F-DroidGitHub
Trolly
APK
Trolly is a shopping list application with the aim of being a very simple app with no annoying or complicated features. It exposes intent filters to allow other apps to automatically add items to the shopping list.
F-Droid
Trudido
APK
Trudido is a privacy-friendly, open-source to-do list app built with Flutter. Organize your tasks, set reminders, and manage your daily life with a simple, intuitive interface. Trudido is designed for users who value transparency and control over their data—no ads, no tracking, and no unnecessary permissions. Features: - Add, edit, and delete tasks quickly - Organize tasks with categories and priorities - Set reminders to never miss important deadlines - Attach notes to tasks for extra details - Customizable themes including dark mode - Multilingual support for a global audience - Works offline—your data stays on your device Why Trudido? Trudido is lightweight, fast, and respects your privacy. All features are available without registration or cloud accounts. Perfect for students, professionals, and anyone who wants a reliable, distraction-free task manager. Trudido is free and open-source. Get organized and stay productive—your way!
F-DroidGitHub
Turtl
APK
Share the data for adding missing icons in an icon oack via email (or other protocols like Owncloud, NFC, Bluetooth, IM...). It just collects the app title, package name, activity name and the icon file of the apps your select. By default have set the email address for TwelF and Onze requests, but you can write another one.
F-DroidGitHub
TuxGuitar
APK
TuxGuitar is a multitrack tablature editor and player. It can open Guitar Pro and PowerTab files. With TuxGuitar, you will be able to compose music using the following features: * Tablature editor * Score Viewer * Autoscroll while playing * Note duration management * Various effects (bend, slide, vibrato, hammer-on/pull-off) * Support for triplets (5,6,7,9,10,11,12) * Repeat open, close and alternative endings * Time signature management * Tempo management Note: this version of TuxGuitar is missing google drive functionality as it depends on a proprietary library.
F-Droid
Twine
APK
Twine is a multiplatform RSS reader app built using Kotlin and Compose Multiplatform. It features an nice user interface and experience to browse through the feeds, and supports Material 3 content based dynamic theming.Features:Supports RSS & Atom feedsGorgeous home feedPin frequently visited feedsSmart fetching: Twine looks for feeds when given any website homepageReading view with shortcut to fetch full articleBookmark posts to read laterSearch postsBackground syncFeed management: Add, Edit & Pin feedsImport and exports your feeds with OPML
GitHubIzzyOnDroid
Unexpected Keyboard
APK
The main feature is that you can type more characters by swiping the keys towards the corners. This application was originally designed for programmers using Termux. Now perfect for everyday use. This application contains no ads and is Open Source.
F-DroidGitHub
UnicodePad
APK
UnicodePad lets you input every character in Unicode. And input string can be copied to the clipboard or input directly by Mushroom. You can find out where selected character is in list. By long clicking, larger character and code point will be shown. Favorite characters can be memorized. If you can't see special characters, you have to get a font such as Noto font and select it. You can download Noto fonts Google.
F-DroidGitHub
Unofficial Golem.de Reader
APK
The unofficial app for the German news site golem.de makes reading the current articles comfortable. It is optimized for all screen sizes, has functions like dark mode, deeplinks and offline articles (for premium user). And if a feature is missing, it can be implemented or requested easily due to its open source development. Information for permissions: * Network: Requirement to communicate with Golem.de
F-DroidGitHub
Unreal Tracker
APK
Displays the latest blog headlines, marketplace listings and commits of Unreal Engine 4 and Unreal Tournament development. There are a few different themes and data is refreshed when the app is reopened.
F-DroidGitHub
U
Unvcode
APK
Anti-censorship by replacing the text with similiar characters in Unicode
F-DroidGitHub
V2compose
APK
V2compose is a V2ex client with simple interface and smooth interaction. Features: * Material You style; * The editor supports Markdown format; * Automatic check-in; * Custom proxy server;
F-DroidGitHub
VIMTouch
APK
* Touch to move cursor * Fling to scroll * Swipe to zoom * Two-fingers gesture to zoom in/out * Unicode and multi-byte * Single tap to send "ESC" * Read email attachments * Single instance to open multiple files in vim windows * Real VIM runtime * Customizable VIM runtime (ex: can install syntax, doc, plugins)
F-DroidGitHub
Valentin's PowerTools #023 - MemorizeYourClassics
APK
Welcome to MYC (Memorize Your Classics)! This app helps you display, read, and memorize poems, ballads, epic poems, and other classic texts. 📚✨🎭 How it works: * Tap the big red button to access your poem collection * In the display screens: * Navigate by tapping the right or left half of the screen * See the current stanza, last two lines of previous stanza, and next two lines all at once! 📖 * Exit using standard Android back behavior * When first installed: * Add poems by tapping the "+" symbol * Enter author, title, year, and paste your content 📝 * Save with the big red button * Or import prepared text files via the import icon 📤 * Change poem IDs easily: * Tap the 123 icon * Enter any new 3-digit ID * Move through poems automatically * Tap 123 again to save Features: * 📱 Smart Display - See previous, current, and upcoming lines all at once for better memorization * 🔍 Quick Access - Use the Text ID system for instant poem retrieval * 📥 Easy Import - Bulk import function for prepared text files with simple syntax * 🔄 Flexible Organization - Change poem order and numbering easily * 💾 Privacy First - All data stored locally on your device Comes pre-loaded with classics like "The Raven" by Edgar Allan Poe, "Der Handschuh" by Friedrich Schiller, and "Der Zauberlehrling" by Goethe! 🎭📚 Created with ❤️ by Valentin.
F-DroidGitHubIzzyOnDroid
VergissNix
APK
This app helps you to create short and simple reminders. For example you can be reminded to take the umbrella with you in the morning or to buy bread in the evening. The name is composed from the german Vergiss = forget and Nix = nothing.
F-DroidGitHub
Virtuosity
APK
Virtuosity helps you organize and track your music practice, allowing you to your reach musical goals faster. Organize Create routines of the exercises you wish to practice. Practice Stay focused while practicing with a built in timer. Measure View logs of your previous practice sessions, as well as detailed graphs showing your performance (BPM) over time. Offline, ad-free, and open source No advertisements, annoying notifications, intrusive permissions, or trackers in this app. Your data is yours. The complete source code is available under an open-source license (GPLv3).
F-DroidGitHub
Volksverpetzer
APK
The official Volksverpetzer app brings fact checks, analysis, and articles directly to your mobile phone. Use the app to read, search, save, and share Volksverpetzer content in a mobile-friendly interface. Features: - Read articles and the social media feeds from Volksverpetzer - Search for topics - Save favorites and article sources - Share content - Push notifications for new content (depending on device settings) The app is open source under the MIT license and the source code is published on GitHub.
F-DroidGitHub
V
Voxtral
APK
Voxtral is an Android voice input app that uses Mistral's hosted Voxtral realtime service. It can be used as: a standalone app for live transcription a microphone IME for keyboards such as HeliBoard an Android voice input service for apps that support speech recognition Important: Voxtral is not offline you need a Mistral API key an internet connection is required during recognition Features: streaming speech-to-text with live updates optional translation to English copy output from the standalone app optional Chinese simplified/traditional conversion optional text-to-speech playback for translated text in the standalone app For best results, press and hold the microphone button while speaking clearly.
F-Droid
WAFRN
APK
Wafrn is a social media app inspired by Tumblr that connects you with your friends all over the world. No matter which platform, wafrn can connect with all fediverse software and also Bluesky. Join us and help us make the internet a better place for everyone.
F-DroidIzzyOnDroid