Notes

514 open source Notes apps

Sithakuru
APK
Sithakuru is a Free and Open-Source Sinhalese keyboard. ## Keyboard Layouts - English - Wijesekara - Singlish ## Other facilities - Light or Dark colors - Show/hide key borders - Show Sinhala letters on keys in Wijesekara layout - Change keyboard height and font size - Erase or move cursor with swiping
F-Droid
Slide
APK
Unlike a typical presentation, only a few words are printed on each slide using very large characters. To make up for this, a presenter will use many more slides than in a traditional presentation, each slide being shown for a much shorter duration. The slides use plain text in a visual manner, to help the audience quickly read and understand the material. It's said to be helpful with Japanese and other eastern languages which use non-Latin alphabets. The method is designed for the people who are not good at presentations and who are quite nervous about the idea of presenting. This method helps the presenter to get organized during the talk and keeps the presenter on track while presenting. The method provides clear visual support for the audience and helps make the content more memorable.
F-DroidGitHub
Sobuu
APK
Sobuu is used to track books reading and organise your readings. You can also let comments in a page or in the percentage of the book that you feel it should be commented. Others can read those comments and reply them.
F-DroidIzzyOnDroid
SourCherry
APK
Free and open-source application for opening CherryTree databases.Features:Supports XML, SQLite and Multifile storage databaseSupports password protected databasesDatabase searchSearch in node textDatabase exportNode export to PDFCreating/editing nodeshttps://github.com/FFDA/SourCherry
GitHubIzzyOnDroid
Spell4Wiki
APK
Wikimedia Commons Audio Upload Tool Spell4Wiki is a mobile application to record and upload audio files for Wiktionary words to Wikimedia Commons. Spell4Wiki also acts as a multilingual Wiki-Dictionary. App Features: Spell For Wiktionary - Record & upload audio for Wiktionary category-based word lists Spell For WordList - Upload audio for custom word lists from text files or copy & paste Spell For Word - Record and upload pronunciation for individual words Wiktionary Search - Search word meanings from Wiktionary in multiple languages What Spell4Wiki App Achieved: • Supported 250+ Languages for all 4 features • Uploaded 40,000+ audio files to Wikimedia Commons from various language contributors • All audio files are categorized under Wikimedia Commons Purpose of this application There are plenty of words in the Wiktionary. But they do not have enough pronunciation audio files. So we can upload pronunciation audio for words in a simple way. And we can use those pronunciation for wiki data planning and other technologies like machine learning under CC-license. And other linguists can learn how to pronounce a word. Technical Features: • High-quality WAV recording with OGG conversion • Smart filtering to check words that already have audio • Direct upload to Wikimedia Commons with proper categorization • Support for 250+ languages Powered By VGLUG Foundation Kaniyam Foundation, Free Software Activists and Tamil Wikimedia Community How to Use 1. Create account in Wikimedia Commons and login (if no account) 2. Select your language from 250+ options 3. Choose recording mode: Spell4Wiki, Spell4WordList, or Spell4Word 4. Record pronunciation and upload to Wikimedia Commons Note This app loads some configuration (available language list, categories & contributors) details from the app's repo. Useful Links Join the Telegram group: @spell4wiki Spell4Wiki Commons Page: Commons:Spell4Wiki More details about development: Blog Post about Spell4Wiki Tutorial & Demo Videos: Play Videos
F-DroidGitHub
Squircle CE - Code Editor
APK
Squircle CE is a fast, lightweight code editor and file manager with support for over 30 programming languages, remote file access via SFTP/FTP(S) and Git VCS integration. Whether you're a student, hobbyist, or professional developer, Squircle CE lets you write, manage, and version your source code anywhere, anytime — right on your phone or tablet. Here are some of the features that help you code more efficiently: • Multi-language Support Code in 30+ languages: Java, Kotlin, Python, C/C++, HTML, JavaScript, TypeScript, PHP, Rust, Go, and more. • Syntax Highlighting Clean and colorful syntax highlighting helps you understand your code at a glance. • Code Completion Speed up coding with smart suggestions for variables, functions, and keywords based on your file content. • Git Integration Version control your code directly in the editor. Commit, push, pull, and manage branches with ease. • File Manager Manage files locally or remotely with SFTP/FTP(S) support - you don't need any other file managing app. • Cross-session Editing Never lose your work — all changes are saved automatically, so you can pick up right where you left off. • Unlimited Undo/Redo Correct mistakes easily with unlimited undo and redo, even after restarting the app. • Bracket Matching Quickly understand code structure with automatic highlighting of matching brackets (), [], and {}. • Code Style Write cleaner code with automatic indentation and smart closing of brackets, braces, and quotes. • Advanced Editing Tools Easily select, delete, or duplicate lines with convenient editing options. • Color Schemes Choose from a variety of themes that match your preferred coding environment. • Open Source Explore and contribute: https://github.com/massivemadness/Squircle-CE
F-DroidGitHub
Standard Notes
APK
Standard Notes is a secure and private notes app. It syncs your notes securely across all your devices, including your Android devices, Windows, iOS, Linux, and Web. Private means your notes are end-to-end encrypted, so only you can read your notes. Even we can't read the contents of your notes. Simple means it does one job and does it well. Standard Notes is a safe and lasting place for your life's work. Our focus is making it easy to write notes wherever you are and syncing them with encryption to all your devices. Our users love us for: * Personal Notes * Tasks & Todos * Passwords & Keys * Code & Technical Procedures * Private Journal * Meeting Notes * Cross-platform Scratchpad * Books, Recipes, & Movies * Health & Fitness Log Standard Notes comes free with: * Seamless sync across all your devices, with easy to use applications on Android, Windows, Linux, iPhone, iPad, Mac, and web browsers. * Offline access, so you can access your downloaded notes even without a connection. * No limit on number of devices. * No limit on number of notes. * Passcode lock protection, along with fingerprint protection. * A tagging system to organize your notes (like #work, #ideas, #passwords, #crypto). * The ability to pin, lock, protect, and move notes to trash, which allows you to recover deleted notes until the trash is emptied. Standard Notes is completely open-source, which means when we say your notes are encrypted with industry-leading XChaCha-20 encryption, and that only you can read your notes, you don't have to take our word for it. Our code is open to the world to audit. We made Standard Notes simple because longevity is important to us. We want to make sure we're here, protecting your notes, for the next hundred years. You shouldn't have to find a new notes app every year. To sustain our development, we offer an optional paid program called Standard Notes Extended. Extended gives you access to powerful tools including: * Productivity editors (like Markdown, Code, Spreadsheets) * Beautiful themes (like Midnight, Focus, Solarized Dark) * Powerful cloud tools including daily backups of your encrypted data delivered to your email inbox every day, or backed up to your cloud provider (like Dropbox and Google Drive). You can learn more about Extended at standardnotes.com/extended. We're always happy to talk, whether it be a question, thought, or issue. Please feel free to email us any time at help@standardnotes.com. When you take the time to send us a message, we'll be sure to do the same.
F-DroidGitHub
Stealth
APK
Stealth provides features from Reddit, without the need for an account. In fact, the app doesn't even let you log in with a Reddit account.
F-Droid
S
Stoic Reading
APK
This app contains texts from Stoics including those of Emperor Marcus Aurelius, the freed slave Epictetus, and Seneca. It contains other, less well known, Stoic texts too.
F-DroidGitHub
Streak
APK
A lightweight, super minimal, streak tracker built in C with rawdrawandroid. Log your daily habits and view your streak continuity. Add entries by clicking the + button, ↩ to undo, or manual input in Add Date.
F-DroidGitHub
Stride
APK
It allows creating and syncing tasks with any git provider (i.e. GitHub, GitLab, SourceHut, etc) or self-hosted server. WARNING: This is currently alpha, so everything is subject to change.
F-DroidGitHub
Stroke Input Method (筆畫輸入法)
APK
This keyboard app lets you input Chinese characters by typing stroke sequences (e.g. 天 is ㇐㇐㇒㇔). It is a minimalist implementation with the following features: * Good character support (over 28k characters) including vernacular Cantonese * User preference for traditional or simplified characters * No ads * No permissions * No tracking or telemetry * Deterministic candidate generation which doesn't learn user input After installing the app, launch and follow the prompts to enable Stroke Input Method in your system settings. There will be a default warning shown — this is normal. This app is free and open-source software, licensed under the GNU General Public License v3.0 (GPL-3.0-only). You are welcome and encouraged to inspect the source code: https://github.com/stroke-input/stroke-input-android
F-DroidGitHub
Stutter
APK
Stutter is a speed-reading app that uses RSVP (rapid serial visual presentation) to show one word at a time in a fixed spot. This reduces eye movement and keeps your pace steady. Paste text, share text from another app, or send a public article URL to extract readable content. Reading speed and timing are fully adjustable, including delays for long words, punctuation, numbers, and short words so the rhythm feels natural and predictable. Features: - Language-aware tokenization and hyphenation for long words (18 supported languages). - Appearance controls for fonts, size, spacing, and colors. - Optional flankers to preview the next word fragment. - No analytics, no tracking, no data collection, and no reading history.
F-DroidGitHub
StyncyNotes
APK
Sticky Notes + SyncThing = StyncyNotes StyncyNotes is a simple Sticky Note application that supports some basic formatting features like those available in the linux mint "Sticky" application (see https://github.com/linuxmint/sticky). It stores notes and formatting in a simple local json file that takes the same format as the linuxmint Sticky, so if you happen to run this app on your desktop, you can use SyncThing to keep the two sets of notes in step.
F-Droid
Sumatora
APK
Sumatora has the following distinctive features: * very fast search and display of exact term/term at the beginning/term included * bookmarks and bookmark export/import * search selected text in applications using contextual menu (or sharing) * multilingual search (supports English, German, Russian, Spanish, Dutch, Hungarian, Swedish, Slovenian and French).
F-DroidGitHub
Super Productivity
APK
Organize your daily tasks at one place while making time tracking a lot less annoying. Super Productivity is a ToDo List / Time Tracker / Personal Jira Task Manager for multiple platforms. Features Plan, track & summarize. Create time sheets and work summaries in a breeze to easily export them to your companies time tracking system. Integrate with Jira, Github and Gitlab. Auto import tasks assigned to you, plan the details locally, automatically create worklogs and get notified right away, when somfething changes. Organize your project's data. Create notes, attach files or create bookmarks for links, files and even commands and have it all out of the way, once you're ready for the weekend. Helps you to establish healthy habits. A break timer reminds to you, when it's time to step away. You also can collect personal metrics for yourself to see, which of your work routines need adjustments. Stuck and procrastinating? No problem! Super Productivity's anti procrastination feature helps you to reconsider your options and a pomodoro timer is also always at hand. Super Productivity does NOT actively collect any data and there are no user accounts or registration. It's free and open-source and always will be. NOTE: There will however be data loaded from app.super-productivity.com on app start and if you use one of the third party providers, you will have to comply with their private policy. Private Policy
F-DroidGitHub
S
Survival Manual
APK
Survival Manual based on the Army Field Manual 21-76 - fully working offline. It contains info on how to make fire, build a shelter, find food, heal and other useful content in a case of emergency. But it does not have to be used in emergency situations only - it can be also useful for trips to the outdoors, hiking, camping, learning about nature and yourself truly. This is not only fun, but you can also train skills (make fire, build shelter, ..) you might need in a catastrophy. Some things work best with practice in a relaxed environment - then you also have time for some experiments.
F-DroidGitHub
Suspension Setup
APK
Suspension Setup helps mountain bike riders keep track of their suspension settings and monitor changes over time. Features: * Manage multiple suspension setups * Track fork settings: air pressure, sag, volume spacers, low-speed compression (LSC), high-speed compression (HSC), low-speed rebound (LSR), high-speed rebound (HSR) * Track shock settings with the same parameters * Track front and rear tyre pressures * Enable or disable individual fields per setup to match your specific components * Full change history: every time you save updated settings, the changes are logged with a timestamp * Add or edit comments on history entries to note what prompted each change * Undo history entries to revert your suspension back to a previous state * Record serial numbers and product pages for your fork and shock * No cloud, no account required, no data sent anywhere — everything stays on your device
F-DroidGitHub
SwiftSlate
APK
SwiftSlate is a system-wide AI text assistant for Android. Type a trigger like "?fix" at the end of any text, in any app, and watch it get replaced instantly. It works in most apps — WhatsApp, Gmail, Twitter/X, Messages, Notes, and more. No copy-pasting. No app switching. Just type and go. Features: • Works system-wide via Android's Accessibility Service • Instant inline text replacement — AI response replaces your text directly • Multi-provider AI: Google Gemini, Groq, or any OpenAI-compatible endpoint (including local LLMs like Ollama and LM Studio) • Text replacer commands run entirely offline with zero latency • Multi-key rotation with automatic rate-limit handling • API keys encrypted with AES-256-GCM via Android Keystore • AMOLED dark theme and light theme with Material 3 • Localized in 7 languages: English, French, German, Spanish, Portuguese (BR), Hindi, and Simplified Chinese • Zero analytics, zero tracking, zero telemetry • Tiny APK (~1.3 MB) with zero third-party networking dependencies Built-in commands: • ?fix — Fix grammar, spelling, and punctuation • ?improve — Improve clarity and readability • ?shorten — Shorten while keeping meaning • ?expand — Expand with more detail • ?formal — Rewrite in professional tone • ?casual — Rewrite in friendly tone • ?emoji — Add relevant emojis • ?reply — Generate a contextual reply • ?undo — Restore text from before the last replacement • ?translate:XX — Translate to any language You can also create your own custom AI commands with any prompt, or text replacer commands for instant offline snippets like signatures, canned responses, and shortcuts. An API key from Google Gemini (free tier available), Groq, or any OpenAI-compatible provider is needed for AI commands. Text replacer commands work without any API key.
F-DroidGitHub
T16Fling
APK
T16Fling is an Android keyboard with 16 keys in a 4x4 grid (similar to the AOSP numeric keypad) that works by flinging each key in the direction of the desired character. Once installed you must enable the keyboard in your Android Settings (System -> Languages & input -> Virtual keyboard -> Manage keyboards). Each key has one main character (shown in a larger and darker font on the left) and one or more secondary characters (shown in a smaller and lighter font on the right). Depending on the gesture you use on the key it will produce different characters: - When tapped, a key will produce its main character. - When flinged (swiped quickly in a direction) a key will produce the secondary character that is in that direcion. - When long-pressed, new keys will appear with extra characters related to those on the main key. Tapping on any of these keys will produce the corresponding character. For example, the second key in the first row (with a large "2" on the left and "abc" on the right) will produce a "2" when tapped, an "a" when flinged left, a "b" when flinged up, and a "c" when flinged right. When long-pressed it will show new keys "á", "à", "â", "ä", "ã", and "ç". There are some exceptions to these rules: - The "0" key only has one secondary character, which is space. No matter which direction you fling it, it will always produce a whitespace. - The shift key (⇪) has two special functions associated to its fling: when flinged up it will turn on Caps Lock, and when flinged down it will turn it off. - The backspace key (⇦) and the enter key (➡) always do the same thing, no matter if you tap them or fling them.
F-Droid
TAG Notepad
APK
Take notes and assign tags to them, making them easier to find, group and use.
F-DroidGitHub
TKCompanionApp
APK
Goal of this app is to be a practical vademecum/handbook for those interested in applying scientific thinking through Toyota Kata. It contains the Coaching Kata 5Q card, plus (possibly) more things and information. Content to be improved and updated from time to time.
F-Droid
TaffyQSL
APK
TaffyQSL is a free and open-source amateur radio logbook for Android, inspired by TrustedQSL. It allows radio operators to manage contacts using the ADIF format and sign QSOs in workflows compatible with Logbook of the World (LoTW). Certificates and private keys are stored locally and protected using the Android Keystore, with encrypted backups on the device. TaffyQSL focuses on local-first operation and privacy. All log data and certificates remain on the user's device. The application contains no telemetry or tracking. Features: * Creation, editing, and export of ADIF logbooks * QSO signing compatible with LoTW workflows * Direct upload to LoTW and query of confirmed QSLs * Natural-language QSO parser for faster logging * Satellite and DXCC entity support * Hardware-backed key protection when supported by the device * Customizable date and time display formats * Available in English, Chinese (Simplified), and Japanese
F-DroidGitHub
TaigIME
APK
Keyboard/Input method for Taiwanese.
F-DroidGitHub