Open Source Android Productivity Apps
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Productivity Apps for Android
View 394 business solutionsBrowse free open source Productivity apps and projects for Android below. Use the toggles on the left to filter open source Productivity apps by OS, license, language, programming language, and project status.
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Obsidian
Community plugins list, theme list, and releases of Obsidian
The Obsidian Releases repository provides the official distribution builds and installers for Obsidian, the popular markdown-based knowledge management and personal wiki application. Obsidian itself is a powerful, offline-first note-taking tool that helps users build interconnected knowledge graphs using markdown files stored locally on their devices, with plugins and community themes for extensibility. This repository houses versioned compiled binaries and packages for multiple platforms such as Windows, macOS, and Linux, enabling users to download stable or nightly builds directly without needing to build the app from source. By maintaining clear version history and downloadable artifacts, it makes it easy for individuals and organizations to audit, rollback, or pin specific Obsidian releases for workflows that depend on stability or particular plugin compatibility. -
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EdgeEver
AI-native knowledge base & Evernote/Obsidian alternative
EdgeEver is a free, open-source knowledge management application that combines note-taking, information organization, and AI-assisted productivity. It provides a three-pane workspace with rich-text editing, Markdown support, and hierarchical notebooks. Users can capture web articles, images, documents, and other resources through browser extensions and mobile sharing tools. Its integrated AI assistant supports summarization, translation, proofreading, and knowledge organization. EdgeEver also includes visual diagrams, mind maps, structured tables, and searchable knowledge collections. Real-time synchronization keeps notes accessible across desktop, mobile, and web applications, including during offline workflows. The platform supports self-hosting through Docker or Cloudflare and integrates with external AI agents through MCP and ACP protocols. -
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Joplin
Open source note taking and to-do app with synchronization
Joplin is a free and open source note-taking and to-do application that can handle a large number of notes in Markdown format, organize them into notebooks and synchronize them with various cloud services. All notes can also be copied, tagged, searched and modified directly from the app or through your own text editor. Notes that are exported from Evernote can be imported into Joplin, be it formatted content, resources, complete metadata or plain Markdown files. When notes are synchronized with cloud services, notebooks, tags and other metadata can easily be moved, inspected or backed up as plain text files. Supported cloud services include Nextcloud, OneDrive, Dropbox and WebDAV. Joplin is available for Windows, Linux, macOS, iOS and Android, with three types: desktop, mobile and terminal. All of them have similar user interfaces and can be synchronized with each other. -
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Omni-Notes
Free and powerful note-taking application
Omni-Notes is a powerful open-source note-taking application for Android designed to be both smart and simple. It has a clean and simple Material Design interface and is packed with plenty of smart features. These include image, audio and generic file attachment, a To-do list, Google Now integration, numerous widgets and so much more. Omni-Notes takes note-taking to a whole new level, making it more convenient and integrated. It's an ideal note-taking application particularly for old Android phones without such apps, giving users an updated look and experience when taking down notes. -
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Beaver Notes
Open-source, local-first workspace for notes, projects
Beaver Notes is a free, open-source note-taking application designed for private, local-first knowledge management. It allows users to create and organize Markdown-based notes without requiring an account or internet connection. The software supports folders, tags, internal note links, and protected notes. Users can maintain personal knowledge collections while retaining control over where their information is stored. Its flexible synchronization approach supports personal cloud storage and self-hosted infrastructure. The application emphasizes privacy by avoiding editor telemetry and unnecessary data collection. A Tauri-based rewrite introduces a smaller application architecture and expands cross-platform functionality. Available for desktop operating systems, with mobile development underway, Beaver Notes combines structured note organization with offline accessibility. -
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Anytype Kotlin
Official Anytype client for Android
anytype-kotlin is the core engine of Anytype, a local-first, peer-to-peer knowledge graph app designed for self-sovereign digital organization. The Kotlin-based backend handles data storage, synchronization, and cryptographic identity management, empowering users to create and share structured documents, databases, and networks of linked information without relying on centralized infrastructure. It offers full offline support, encrypted syncing, and identity verification through the Anytype protocol. The engine is built to be portable, efficient, and interoperable with other components in the Anytype ecosystem. -
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TiddlyDesktop
A custom desktop browser for TiddlyWiki 5 and TiddlyWiki Classic
TiddlyDesktop is a free, open-source desktop application for creating and managing locally stored TiddlyWiki documents. Built with NW\.js, it provides a dedicated environment for working with TiddlyWiki 5 and TiddlyWiki Classic. Users can maintain personal knowledge bases, journals, research notes, and interconnected documentation. Its specialized browser interface allows local wiki files to be opened and edited without a conventional web browser. Changes can be saved directly to the original files on the computer. Multiple wikis can be managed independently for different projects or purposes. Separate configuration directories support distinct personal and professional environments. TiddlyDesktop runs on Windows, macOS, and Linux and includes Chromium developer tools for advanced customization. -
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Super Productivity
Super Productivity is an advanced todo list app
Being clear and organized in your work doesn‘t just make your life easier but also communication with your partners and clients. The App lets you create time sheets and work summaries effortlessly to track and document your work. Share it right away to get your head free so you can quickly focus on your next task. Never miss the important updates on any of your Jira tickets. With our Jira and Github integration, you will be notified about ticket changes without having to check Jira or your emails every 10 minutes. Just auto import all tasks assigned to you, plan the details locally and submit worklogs with just a single click. Working productively means working smarter rather than harder to drain yourself out. Super Productivity offers a variety of optional features to support you to become better at this. A pomdoro timer helps you to focus if needed. A break reminder, tells you when to step away and an anti procrastination page helps to waste less of your time. -
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Kivixa
A privacy-first cross-platform productivity workspace for notes
Kivixa is a free, open-source, privacy-focused productivity workspace combining note-taking, drawing, planning, and offline AI assistance. It supports rich Markdown documents, handwritten notes, PDF annotations, and an infinite drawing canvas. Users can organize projects, tasks, calendar events, and interconnected knowledge graphs. Its local AI engine supports multiple language models for summarization, semantic searching, and contextual questions. MCP integration enables AI-assisted file operations with user confirmation. Offline speech recognition, voice notes, and text-to-speech expand its accessibility tools. Automatic version snapshots preserve document history and allow earlier versions to be restored. Built with Flutter and Rust, Kivixa also offers focus timers, Lua scripting, and cross-platform synchronization. -
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Binaural Beats
Brainwaves entrainment, auto hypnosis & lucid dreaming on Android
Brainwaves entrainment, auto-hypnosis & lucid dreaming with an Android phone. This Android application is completely free and open-source, released under the GPL V3 license. To install, search for binaural beats therapy in the market or click on the link directly from your phone. Binaural beats stimulate your brain by sending special auditory artifacts directly into your headphones to produce subtle changes in behavior though the entrainment of brainwave frequency. -
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Habitica
A habit tracker app which treats your goals like a Role Playing Game
Get motivated to achieve your goals. Now is the time to have fun while completing your tasks! Join more than 4 million Habiticans and improve your life one task at a time. Habitica is a free habit building and productivity app that takes your real life as a game. With in-game rewards and punishments to motivate you and a strong social network to inspire you, Habitica can help you achieve your goals to be healthy, hardworking, and happy. Stay responsible by following and maintaining your Habits, Daily Tasks and To-Do Tasks with habitica's mobile apps and the website, both easy to use. Cross off tasks to level up your Avatar, and unlock in-game features like battle armor, mysterious pets, magical abilities, and even missions! Fight monsters with other Habitica users! Use the Gold you earn to buy in-game or custom rewards, like watching an episode of your favorite TV series. -
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Loop Habit Tracker
Mobile app for creating and maintaining long-term positive habits
Loop is a mobile app that helps you create and maintain good habits, allowing you to achieve your long-term goals. Detailed graphs and statistics show you how your habits improved over time. It is completely ad-free and open source. Beautiful, minimalistic and lightweight interface. Loop has an elegant and minimalistic interface that is very easy to use, even for first-time users. Highly optimized for speed, the app works well even on older phones. Habit score. Loop has an advanced formula for calculating the strength of your habits. Every repetition makes your habit stronger and every missed day makes it weaker. A few missed days after a long streak, however, will not completely destroy your progress, unlike many other don't-break-the-chain apps. Flexible schedules. In addition to daily habits, Loop supports habits with more complex schedules, such as 3 times per week or every other day. -
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Simplenote for Android
Simplenote for Android
Simplenote for Android is the open-source Android client for Simplenote, a lightweight, fast, and free note-taking app that syncs text notes, to-dos, and ideas across all devices automatically. The Android version provides a clean and minimalist interface optimized for phones and tablets where users can quickly jot down thoughts, organize them with searchable tags, and have everything backed up and synchronized via the Simplenote service. Users can also create checklists, pin important notes for quick access, and instantly find content using powerful keyword search tools. The app supports Markdown formatting, letting users add structured text like headers, lists, and links with easy previewing. Because it ties into the same Simplenote account used on iOS, macOS, web, or desktop apps, content stays consistent and accessible regardless of the platform you use. -
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Zulip
Powerful open source team chat application
Zulip is a powerful open source group chat application that combines the immediacy of real-time chat with the productivity benefits of a threaded conversation model. Zulip’s unique threading model allows users to easily catch up on important conversations, helping to save time and increase productivity. -
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Data Envelopment Analysis using Stata
Unified Data Envelopment Analysis commands for Stata
DEAS provides Data Envelopment Analysis tools for Stata. Version 2.0 is a major update centered on a unified dea command for Stata 16 or later. It consolidates sixteen DEA model families into one interface, keeps backward compatibility with the original inputs = outputs syntax, and adds a fast Mata two-phase revised simplex engine alongside Stata's LinearProgram() IPM engine. The package supports radial technical efficiency (CCR/BCC), SBM, additive model, radial and SBM super-efficiency, multiplier form, directional distance function, cost, revenue, profit, allocative efficiency, FDH, imprecise DEA, undesirable outputs, SBM with undesirable outputs, and congestion analysis. Extension commands provide Malmquist productivity index, window analysis, network DEA, cross-efficiency, bootstrap DEA, fuzzy DEA, and research-oriented game-theoretic DEA diagnostics. The release includes Stata help files, an OECD education application, and forthcoming Stata article and supplement materials. -
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My Brain
Open-source, All-in-one productivity app for Tasks, Notes, Calendar
My Brain is an Open source, All-in-one productivity app for Tasks, Notes, Calendars, Diary, and Bookmarks. Private with no data collection and no internet permission at all. Create tasks with priority, sub-tasks, descriptions, and due dates and reminders. Create Notes that support markdown which enables you to use Headers, lists, links, etc. Record your mood daily and view your mood summary with beautiful graphs. -
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NoteGen
Capture first. Organize later. A local-first Markdown app
NoteGen is a free, open-source, AI-powered Markdown note-taking application designed to turn scattered information into organized knowledge. It allows users to capture text, screenshots, voice recordings, files, links, and tasks without immediately organizing them. The application uses configurable AI models to transform collected materials into structured notes, summaries, and reports. Its editor supports Markdown formatting, mathematical expressions, diagrams, tables, and visual editing. NoteGen provides semantic search, retrieval-augmented generation, and knowledge base management for exploring saved information. It also includes an interactive canvas for mind maps, flowcharts, and visual documentation. With local-first storage and optional Git, WebDAV, and S3 synchronization, it supports flexible personal knowledge workflows. -
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Lifeograph
Cross-platform, parametric note-taking application
Lifeograph combines powerful features with a clean and thoughtfully designed interface. Your data stays on your device, and built-in encryption keeps privacy at the core. With WYSIWYG editing, your entries always appear in their final form. Integrated data extraction tools transform your journal entries into dynamic tables and charts. -
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tangent
Self-hosted Notes/To-Do App with voice transcription
https://github.com/GyratingSeaCow/tangent - Go here for docker install instruc. A notes app for the people, forever, for free on your own hardware synced up! Tangent is a self-hosted voice brain-dump app. You hit record, dump whatever's in your head, and a Dockerized home server running Whisper on your own GPU transcribes it automatically. Your audio, transcripts, and notes never leave hardware you own — no cloud, no third party, no subscription. Features: Three capture modes — Brain Dump (verbatim voice memo), Meeting (speaker-aware transcript + meeting notes), Text Note (typed, no audio). Notebooks — a genuine ink surface: handwriting with pen styles, lasso selection, undo/redo, typed blocks and embedded recording cards on one scrolling page, and PDF export. Handwriting search — search all your notebooks in a flash Ask My Notes — questions grounded in your recordings, summaries, notebooks, and to-dos, with actionable items produced from 2 second voice note -
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Mindwtr
A complete Getting Things Done (GTD) productivity system for desktop a
Mindwtr: The Privacy-First GTD System Mindwtr is a Getting Things Done (GTD) productivity tool designed for "Mind Like Water." It runs completely offline—no accounts, no tracking, and no subscriptions. The Core GTD Workflow Capture: Instantly offload thoughts to your Inbox. Clarify: Process tasks rapidly with the built-in "2-Minute Rule" timer. Organize: Sort tasks by Contexts (@work, @home), Areas, and Projects. Reflect: Keep your system trustworthy with a guided Weekly Review. Engage: Filter Next Actions by energy level or time available. Powerful Features Local-First: Your data lives on your device (SQLite). You own it 100%. Flexible Sync: Sync privately via File System (Syncthing, iCloud) or WebDAV (Nextcloud). Focus View: A unified dashboard for your calendar events and next actions. Kanban Boards: Visualize projects with drag-and-drop columns. Stop managing your data. Start getting things done. -
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GitJournal
Mobile first Note Taking integrated with Git
GitJournal is a note taking app focused on privacy and data portability. It stores all its notes in a standardized Markdown + YAML header format (optional). The notes are stored in a Git Repo of your choice - GitHub / Gitlab / Custom-provider. This means you can easily self host or host your notes in one of the many Git providers. GitJournal uses standard SSH, and can therefore work with any Git Hosting Provider. GitJournal aims to be extremely configurable and work with your favorite apps. The idea is to not build another silo and instead integrate it into your existing workflow. No two people are the same. Depending on the task and the person, your Notes may need to be visualized differently. All your notes are stored in Markdown. However you can edit the notes in many different ways depending on the task. Soon you'll even be able to visualize yours Notes in a Graph. GitJournal will always be completely Open Source. -
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KitchenOwl
Self-hosted grocery list and recipe manager
KitchenOwl is a free, open-source, self-hosted grocery list and recipe management application designed for individuals, families, and shared households. Built with Flutter and Flask, it provides synchronized shopping lists across mobile, desktop, and web interfaces. Users can add grocery items and organize shopping activities with other household members in real time. Its recipe management tools allow ingredients to be transferred directly into shopping lists. KitchenOwl also includes meal planning features for organizing upcoming meals and coordinating grocery purchases. Household expense tracking helps users monitor purchases and manage shared balances. The application supports partial offline functionality and provides a privacy-friendly alternative to cloud-dependent grocery management services. -
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Medito App
The Medito app is a 100% free meditation app built with flutter
Meditation can positively transform people's lives. We believe no one should have to pay for it. We are the Medito Foundation, and we've built the Medito App for people who have never meditated before or want to deepen their meditation practice. The app is free, forever: no ads, no spam, no need to sign up or pay. Medito App is a flutter project available on Android and iOS maintained by the Medito Foundation and its community. With our app’s holistic approach, you can find guided and non-guided meditations from Medito Foundation and various other organizations such as UCLA; all of which are based on ancient as well as recent meditation techniques. Just spend a few minutes per day on the app using the various features and discover the life-changing benefits, positivity, and transformative effects of meditation in your life. -
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Silent Moon
Meditation app, explore the app, find some peace of mind
Meditation app, Explore the app, Find some peace of mind to prepare for meditation. -
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Simple Notes
A simple textfield for adding quick notes without ads
If you need to take a quick note to make a shopping list, a reminder for an address, or a startup idea, then look no further as this is the simple organizer tool you've been looking for Simple Notes. To-do list organizer and planner, the best note-taking apps, and sticky notes are free for Android mobile phones. No complicated setup steps are needed, just tap the screen and type in what you came for and create notes, quick lists, checklists, or backup for any idea. With your simple personal notebook, you can remember anything fast. A shopping list for groceries, a to-do list for your daily agenda, and easier note-taking to make setting up meetings a walk in the park. Simple notes planner is a quick, simple-to-use organizer and remarkable note-taking colorful widget and it will serve as an invaluable tool helping you to remember necessary pieces of information or shopping lists in the mall.
