Notes

514 open source Notes apps

Butterfly
APK
Butterfly is a note-taking app where your ideas come first. You can paint, add texts, and export them easily on every device. This app works on Android, Windows, Linux, and in the web. * Simple and intuitive: Every tool is in the right place. Open the app and start drawing. Change your tools by clicking on them. * Customizable: Change everything to your needs. Choose your custom color, create a palette, and add your pages to the paper. The paper has an infinite size, perfect for your ideas and notes. * Supports your favorite formats: Import and export are supported for images, PDF and SVG. Open these files directly to edit them. * Works on every device: The app is available for Android, Windows, Linux, and in the web. You can use it on your phone, tablet, or computer. * Choose where your data is stored: You can choose to store your data locally or in your favorite cloud (WebDAV). You can also export your data to a file and import it again. * Available in many languages: The app is available in many languages. Help us to translate this app to your language. * FOSS: The app is open source and free. You can contribute to the project and help to make it better. * Use it offline: You can use the app offline. You can draw, paint, and export your notes without an internet connection. * Use your favorite stylus: The app supports stylus and touch devices. You can draw and paint with your favorite stylus. * Write text: You can write text on your notes. You can change the font, size, and color. * Take photos: You can take photos and add them to your notes. You can also import photos from your gallery. * Editable: You can change the size, color, and position of every element after you added it to your note. * Add shapes: You can add shapes to your notes. You can choose between a rectangle, circle and line. * Structure your notes: Add areas and waypoints to your notes to keep them organized.
F-DroidGitHub
CBTAndroid
APK
A simple implementation of a seven column thought journal. What is CBT: CBT is a form of therapy that helps you restructure negative thoughts in order to improve your life How to use: When you find yourself feeling down, record the thoughts you are currently having. Then prove that those thoughts are wrong with facts. Finally come up with a new way of looking at the situation. Learn More
F-Droid
CO3
APK
A free reader app for Archive of Our Own (AO3). Built because other AO3 apps charge money for features that should be free. Features: Custom library with favorites Category management and organization Reading history with filters Native AMOLED support Offline reading No subscriptions, no ads, ever.
F-DroidGitHub
C
CSV Editor
APK
CSV Editor is a simple, lightweight app for viewing and editing CSV (comma-separated values) files on your Android device. Features: • Open CSV files from your device storage • Create new CSV files from scratch • Edit individual cells in a spreadsheet-like view • Add and delete rows and columns • Save edited files back to storage • Horizontal and vertical scrolling for large files • Pinch to zoom for better viewing • Keyboard-aware scrolling keeps your active cell visible CSV Editor is free and open source software with no ads or tracking.
F-Droid
Calibre-Web-Companion
APK
Unofficial companion app for Calibre-Web and Calibre-Web Automated. Browse your book collection and manage your digital library on the go. Built with Flutter and Material You for a modern, intuitive and responsive experience. Available for Android, in 15 languages. Features: - Connect to your Calibre-Web (Automated) server, including reverse-proxy / SSO setups, custom HTTP headers and self-signed certificates. - Browse your whole library and discover books by author, series, publisher, rating, hot & trending, and more. - View rich details for every book, edit its metadata, and upload new covers. - Mark books as read or unread, archive them, and organize them into shelves. - Create, edit and browse Magic Shelves: dynamic, rule-based shelves (Calibre-Web Automated only). - Add books quickly by scanning their ISBN barcode. - Read books in the built-in eBook reader and sync your reading progress across devices via WebDAV. - Send books to your e-reader (Kindle/Kobo) via send2ereader or Calibre-Web's email function. - Download books into your collection with Shelfmark. This app does not support or encourage the piracy of copyrighted works; please only download content you are legally entitled to. - Upload books to your server, and sync your whole library or selected books for offline reading. - Make it yours: reorder or hide book actions and sections, choose a theme, enable e-ink mode, and adjust the text size. The app is in active development. You can open issues on GitHub for bugs, feedback and feature ideas. Credits: Calibre-Web, Calibre-Web Automated, Shelfmark, send2ereader, Flutter.
F-DroidGitHub
Capy Reader
APK
Just like its namesake, Capy Reader is a small RSS reader focused on approachability and simplicity. Some features include: • Syncing via Feedbin, FreshRSS, or directly to your device • Track read and starred articles • Article search • Headlines widget • Notifications • Full content mode • Dark mode • Big screen support • Import and export your saved feeds
F-DroidGitHubIzzyOnDroid
Carnet
APK
Carnet is a powerful note taking app which purpose is not only to write your shopping list but can also be used to write longer texts, stories, etc. Carnet is available on Android and Linux, also on your web browser with full compatibility with Windows, Mac and Linux, with sync capabilities (not mandatory) '''Features''' * Complete editor : bold/italic/underline/color/highlight/alignment * Import from Google Keep (only on desktop, then sync on mobile) * Organize with folders and choose root storage folder depending on your needs * Keywords * Quickly see your recent notes * Search amount your notes * Protect the app with a pin code (won't encrypt notes) on android * Statistics : words/sentences/characters * Sync with NextCloud * Images / Record audio * Online editor as a NextCloud App * Dark theme * Change note background color * TodoLists * Websites' links * Multiple languages The app is in constant development
F-DroidGitHub
Chaka Book Reader
APK
Read fluently and comfortably, with simple and clear interface. Supported Document Types: PDF, EPUB, MOBI, CBZ, FB2, XPS, TXT, HTML, OFFICE(DOCX, XLSX, PPTX), and ZIP/GZIP packages of previous documents are suppoted. Features: · Horizontal / Vertical Flip · Continuous Scroll · Lock Stray: Keep scroll straight · Margin Crop · Focus Mode: Keep page position on flipping zoomed pages · Smarty Focus: Recognize page border bias in Focus Mode · RtL Text: Support Top-to-Bottom, Right-to-Left(TB-RL) text · Single Column: Support scanned dual-spread PDF page · Color Palette · Font Size selectable · Text Select and more operations · Table of Contents · Bookmarks · Links · Search · Share book · Remember reading states The project is under active development.
F-DroidGitHub
Chinese Converter
APK
No ads! Supports conversion directly in-app automatically! Open source! My second app project! Hope you will like it! Makes use of the OpenCC database, which eliminates Simplified to Traditional conversion problems like 「后門」 or 「頭發」. It supports regional variant characters standards of Hong Kong and Taiwan, as well as word use preferences of mainland China and Taiwan. Features: - Easy Mode automatically detects Traditional/Simplified Chinese and convert to the other - Supports conversion in-place in input boxes of other apps - 10 conversion schemes (see the list below) - Text-to-Speech Feature - Converting from File - Follows latest Material 3 guidelines - Supports night mode - No ads and no tracking (app does not have internet or storage access) Conversion Schemes: (OpenCC standard recommended unless there is a special need) Simplified to Traditional 1. Simplified to OpenCC Traditional (recommended) 2. Simplified to Traditional (TW variant) 3. Simplified to Traditional (HK variant) 4. Simplified to Traditional (TW variant and phrases) Traditional to Simplified 5. OpenCC Traditional to Simplified (recommended) 6. Traditional (TW variant) to Simplified 7. Traditional (HK variant) to Simplified 8. Traditional (TW variant) to Simplified (CN phrases) HK-Taiwan variant characters conversion 9. OpenCC Traditional to Traditional (TW variant) 10. OpenCC Traditional to Traditional (HK variant) Weird issues? Send an email to apps@iatfei.com and I will fix it as soon as possible! Or send me a pull request :) This is an open source project. The source code is released under GPL version 3 or later. Source code: https://github.com/fei0316/OpenCC-android-app/
F-DroidGitHubIzzyOnDroid
CineLog
APK
Rate and review movies you saw. Build your own review database ! Features: Search for movies and series with [https://www.themoviedb.org/ tmdb.org] API; Choose tmdb language you want to use; Add a review for movies and series you found in a local database; Can't find the movies you're looking for ? Create a review without tmdb search; Choose the maximum rating you want to use; Save your movie and serie wishlist; Save your current series progress; Use tags to group series and movies; Export your review database in CSV format; Import an existing review database; Enable an automatic CSV backup (can then be synchronised with a cloud client). Permissions: INTERNET to look for movies in tmdb ACCESS_NETWORK_STATE to know if you're connected to Internet or not READ_EXTERNAL_STORAGE to read files to import WRITE_EXTERNAL_STORAGE to export database as a CSV file Special thanks: To Christopher Bodtke that wrote German translation. To Diego Sangunietti that wrote Spanish translation. To verahawk that wrote Polish translation. To Vistaus that wrote Dutch translation. To sr093906 that wrote Chinese translation To Kerstin Maur that kindly designed an icon for CineLog and suggested colors.
F-DroidGitHub
CipherNotes
APK
Cipher is a privacy-first notes app with AES-256-GCM encryption. All data stays on your device. Zero cloud, zero telemetry.Features:Text notes & checklistsPer-note password encryptionOffline-onlyOpen source (MIT)
F-DroidGitHubIzzyOnDroid
Ciyue
APK
Ciyue is a simple mdict dictionary. Features: * 📄 Support MDX/MDD * 🔍 Support multiple dictionaries search and display * 🎨 Support Material You * 🌐 AI Translate (Support OpenAI, Gemini, Deepseek...) * 🔈 Support reading aloud * 🔖 Bookmarking words to the word book
F-DroidGitHub
Clay Tablet
APK
Clay Tablet is a simple and intuitive Android tool for cuneiform writing and practice. With Clay Tablet, you can adjust the size and the behavior of wedges to practice your cuneiform skills and create entire Mesopotamian texts from scratch! It has: - Basic drawing and writing features - A scrollable tablet canvas - Undo/Redo and eraser tools - Adjustable wedge sizes Future updates will include a transliteration logic and a complete cuneiform library. (C) 2025 Batuhan Erdogan
F-Droid
Clear List
APK
Helps people to quickly capture what's on their mind and get a reminder later at the right time. Included are two clear and beautiful material designed themes to make use experience better. No remote server is used, data is kept on your device.
F-DroidGitHub
Colemak Mod-DH Keyboard
APK
This tiny app allows you to connect a physical keyboard to your device's USB socket, and then type using one of the Colemak Mod-DH layout mappings. Supported layouts: Mod-DH ANSI US Mod-DH ANSI US wide Mod-DH ISO US Mod-DH ISO US wide Mod-DH ISO UK Mod-DH ISO UK wide Vanilla Colemak Vanilla Colemak wide Note: - This app is for physically connected keyboards only - it does NOT change the on-screen software keyboard.
F-DroidGitHub
Comfort Reader
APK
Comfort Reader makes reading easier for you. It streams any text directly to your eyes. Smart text processing and colored letter animation help you to recognize and understand text faster and better. Reading a book will seem just like watching a film, at the speed that works best for you. Main features include: supported file formats: txt and pdf displays; just the current phrase you are about to read; makes sure that associated words won't get chopped randomly (as in conventional Speed Reading Apps with Rapid Serial Visual Presentation); creates a fluent stream of text at your desired speed; colored letter animation stimulates better concentration and comprehension; trains your reading, reduces regression and expands your vision span; fully costumizable text appearance and reading configuration
F-DroidGitHub
Comics Reader
APK
N.B No cbr (rar archive) support in F-Droid build. * Can be used to open cbz, cbt; jpeg, png and gif from any file manager. * Comics browser with thumbnails. * Bookmarks manager to download albums from remote sites. * Fast pages switcher with pages previews. * Double pages mode. * Fling gesture to change page with smooth animation. * Fullscreen for devices with physical buttons. * Use lower quality images (resolution is decreased) if any out of memory exception occurs. * Available in English, French & Turkish languages (any translators are welcome to contribute ^^)
F-Droid
Compass Keyboard
APK
CompassKeyboard's main goal is to enable entering any character (including international characters and symbols of computer languages as well) with the same layouts. Default layouts support Latin- and Cyrillic-based and Greek character sets: user-definable external layouts are supported as well. For entering a plain character just swipe a key to some direction: for entering some accented ones, do a big swipe across the whole keyboard. Depending on the direction of the big swipe, you can choose different sets of accenting. For choosing a different layout, do a big swipe from the top-left corner of the keyboard across to bottom-down, and choose a layout from L0 to L6 (L0:Latin, L1:Cyrillic, L2:Greek, L3-L6:Custom). To get a visual feedback about the symbol you are about to enter, visit the entries 'Feedback/Normal feedback' and 'Feedback/Password feedback' in the Settings menu, and choose either Toast or Highlight.
F-DroidGitHub
Concert Diary
APK
Concert Diary is a simple Android app for recording your concerts and festivals as personal diary entries. --- You can: • Store events with date, location, acts and setlists • Add personal notes and ratings for each event • Attach photos and videos from concerts and festivals • Keep an overview of attended events and artists seen • Manage upcoming events and attach ticket PDFs for quick access --- Automatically fetch artist images via the Deezer API (disabled by default; enable in settings) All data is stored locally on the device using Room. The app is available in English and German. Export and import of database supported. --- Known issue: • Occasionally, theme colors display incorrectly. Toggling the theme off and on again fixes it.
F-Droid
Contact Diary
APK
Contact Diary is a simple app that allows you to keep a record of the people you have met and the events you have attended to recently. In the undesired event that you test positive for COVID-19, Contact Diary is a place where to quickly find who you must warn about the situation. How it works Every day Contact Diary will prompt you to insert the events you have attended and the people you have been with during the day. Through some simple forms you will be able to store the essential information about your contacts, in case you need to retrieve it. Just that. Simple, right? ;) Features Configurable notification time, so the prompt does not interfere with your daily workflow. Show only potentially risky contacts. Automatic removal of entries older than 15 days. Export your latest contacts to a CSV file that you can share with the authorities. JUST ONE PERMISSION, that needed for the app being able to notify you after device restarts. Nothing else. In particular, NO INTERNET permission. The information entered is yours, and it never leaves your device. FAQ - Wait, isn't this what Governments' contact tracing apps are doing? No. The goals of Governments' contact tracing apps and of Contact Diary are inherently different. Governments' contact tracing apps notify you when you have been at risk, and Contact Diary serves to remember who you must notify if you test positive. - Is this app BETTER than Governments' contact tracing apps? No. Governments' contact tracing apps may account for contacts that you may not be aware of, like the person sitting in a neighboring table at a restaurant, or that other person using the same bus to go to work. Contact Diary IS NOT A REPLACEMENT TO GOVERNMENTS' CONTACT TRACING APPS. - Is this app WORSE than Governments' contact tracing apps? No. Government's contact tracing apps crucially rely on all persons interacting to have the app in order to do proper notifications. With Contact Diary, you just need yourself to keep track, and you can easily notify people (or places) that do not use conventional contact tracing apps. - Will this app share the information I input? NO. The app has no permissions, so there is no way that it can connect to the internet. The information you insert will never leave your device. Even more, entries in the diary are automatically eliminated when they become older than 15 days. Support If you find a bug, have an idea on how to improve Contact Diary or have a question, please visit the Contact Diary project page on GitHub: https://github.com/apozas/contactdiary
F-DroidGitHub
Conty
APK
Welcome to Conty, the ultimate app for kids to enjoy immersive, interactive stories! With our app, you can download and listen to captivating, free-to-play stories that encourage creativity, imagination, and learning. Whether at home or on the go, your child can dive into exciting adventures that play right from your phone, with or without internet access!Key Features:Interactive Stories for All Ages. Explore a growing library of stories designed to entertain and engage young minds. Each story is interactive, allowing children to make choices that shape the narrative, making every adventure unique!Download & Play Offline. Download your favorite stories from the app and store them on your phone. No internet? No problem! Once downloaded, your kids can listen and enjoy the stories offline, anytime, anywhere.Community-Created Stories .Access free stories created by a vibrant community of storytellers and enthusiasts. Discover new voices and perspectives as the library continues to grow.Safe & Kid-Friendly Environment. We prioritize child safety. The app offers a secure, ad-free experience with age-appropriate content, designed specifically for young children.How It Works:Browse: Open the app and explore the library of available stories.Download: Choose a story to download and save it to your device.Listen & Interact: Hit play and let your child start their interactive story adventure!Offline Access: Once downloaded, you can access and play the stories anytime, even without an internet connection.Give your child the gift of imagination and adventure with Conty. Perfect for bedtime, road trips, or quiet time, our app is designed to keep kids entertained, educated, and engaged—all while fostering a love for stories.Download now and start your storytime adventure!
GitHubIzzyOnDroid
Counter
APK
Counter is an app for counting, by clicking + and - you can increase or decrease the number. Counter uses a flip clock design.What can you do with Counter?CountChange CountReset Count
F-DroidGitHubIzzyOnDroid
Crystalpad
APK
Crystalpad is a minimalist, open-source notepad for Android.Focus on your thoughts without distractions. It is built with Jetpack Compose and Material 3 for a modern and fluid experience.Key Features:Privacy First: No data collection, no tracking, and no internet permission required.Local Storage: All your notes are stored securely on your device using Room database.Lightweight: Fast startup and low resource usage.A clean and simple notepad that respects your privacy.
GitHubIzzyOnDroid
Custom Riddle Generator [small, no ads]
APK
This app is a tool to create your own riddles/escape rooms (those with relations number->text/image) to play at home with friends or anywhere else. Note: you can specify only text, only image or both for each 4-digit number This is the list of things you can customize: - Title of the app - Text of a specific number - Image of a specific number - Text of not-specified number This is the list of things you can't customize (yet) - Theme of the app - Background - Number of digits (only 4) - Image of not-specified number As of update 2.0 there is now a demo you can load to see how it works. Many thanks to Jorge del Castillo for it! If you have any suggestion feel free to contact me (or write it in the comments) although I can't promise I'll be able to implement it :/ The source code is available on GitHub; https://github.com/TrianguloY/NumericRiddleGenerator
F-DroidGitHub