2FAS
Security & Privacy
A local-first pair of apps: the 2FAS Auth two-factor authenticator and the 2FAS Pass password manager. Auth needs no account and supports backups.
Apps for Android
34 apps
34 apps that APP NAVI confirmed from official sources to run on Android. Last checked: 2026-11-05. Anything we could not confirm stays "Unverified"; we never guess. Prices and specs change, so check each app's official page before you use it.
Aegis Authenticator
Security & Privacy
A free, open-source Android app for managing 2-step verification tokens. Tokens are kept in an encrypted vault with optional biometric unlock, per the official site.
Anki
Education & Learning
A spaced-repetition flashcard program. The desktop version is free and cards sync across devices via AnkiWeb.
Free plan
AntennaPod
Mobile Apps
An open-source podcast manager for Android. It subscribes to any RSS feed, downloads episodes for offline listening and has no ads in the app.
Indie
Briar
Mobile Apps
An Android messenger that bypasses central servers, sending messages over Bluetooth, Wi-Fi or Tor. Data is stored on the device and nearby contacts can chat offline.
Chatbox AI
AI & Generative AI
An AI client for using GPT, Claude, Gemini, DeepSeek and more with your own API keys, free to start on desktop, mobile and web.
Free planAI
ChatdollKit
AI & Generative AI
A Unity SDK for turning a 3D model into a voice-enabled chatbot. It supports several LLMs such as ChatGPT, Claude and Gemini and speech synthesis such as VOICEVOX and AivisSpeech.
Free planAIJapanese UIIndie
Ente Auth
Security & Privacy
A free, open-source two-factor authentication app with end-to-end encrypted backups and sync across devices. It can also be used offline without an account.
Gyazo
Web Services & Online Tools
A capture tool for screenshots and video that creates a shareable URL right away. It offers shortcut capture, OCR search, tags and collections.
Free planAIJapanese UI
Joplin
Daily Life & Utilities
A privacy-focused open-source note-taking app with sync across devices and end-to-end encryption.
Jotoba
Education & Learning
A multilingual Japanese dictionary built on free resources. It covers words, kanji, names and radicals and exposes a public API.
Karakeep
Daily Life & Utilities
An open-source bookmark manager for links, notes and images, with AI auto-tagging and self-hosting; apps for iOS, Android, Chrome and Firefox.
AI
Kolibri
Education & Learning
An offline-first learning platform for delivering educational content without internet access. It is developed by the nonprofit Learning Equality.
Free plan
Leasy
Mobile Apps
A simple flashcard-style memorization app where you add your own words or phrases. It offers multiple-choice and typed questions, review of missed items and a random test, with data kept on the device.
Free planJapanese UI
Luanti
Games & Entertainment
Formerly Minetest: an open-source voxel game creation platform with a Lua API for making games and mods.
Mihon
Mobile Apps
An Android reader for manga, webtoons and comics. Sources are added through extensions, and reading progress can be tracked with MyAnimeList, AniList and others.
Mindustry
Games & Entertainment
A sandbox tower-defense game where you build factories to process materials and defend your base against enemy waves, with multiplayer servers.
Free planJapanese UI
Mochi
Education & Learning
A spaced-repetition flashcard app that doubles as a Markdown note tool. It is local-first and supports LaTeX plus language-learning aids such as dictionaries and text-to-speech.
Free planAI
NewPipe
Mobile Apps
A free open-source YouTube client for Android designed to avoid ads and unnecessary permissions, with downloads, background play and a popup player.
Free plan
ntfy
Web Services & Online Tools
An HTTP-based pub-sub notification service that sends push notifications to phones and desktops via PUT/POST. It can be used without sign-up and is open source.
Free planIndie
Obtainium
Mobile Apps
An Android app that installs and updates apps directly from their release pages such as GitHub and F-Droid, and notifies you of new releases.
Organic Maps
Mobile Apps
An offline maps and navigation app built on OpenStreetMap data. The official site says it has no ads or tracking and is free.
Free planJapanese UI
Plane
Business & Operations
A project and knowledge management platform covering work items, cycles and a wiki. It is available as a cloud service or self-hosted via Docker or Kubernetes.
AI
SimpleX Chat
Social & Communication
A private messenger that uses no user identifiers, not even random ones. Connections are made via link or QR code for messages and calls, per the official site.
Subway Tooter
Mobile Apps
A Mastodon client for Android phones and tablets. It features simultaneous multiple accounts, rearrangeable multi-column views and extensive filters.
Japanese UI
Termux
Mobile Apps
A terminal emulator and Linux environment app for Android. It works without rooting or setup, and extra packages are installed with APT.
Tusky
Mobile Apps
A lightweight Android client for Mastodon supporting photos, videos, lists and custom emojis. It is free and open source.
Free plan
Tux Paint
Education & Learning
A free drawing program for children aged 3 to 12. The official site states it has no ads, is open source under the GPL and is built by a worldwide volunteer team.
Free planJapanese UIIndie
Voicepaper
Mobile Apps
A text-to-speech app for iPhone, iPad and Android. Import PDFs, EPUBs, web articles and photos and listen; the English page says it is free and has no ads.
Free planAIIndie
Yomitan
Education & Learning
A free browser extension that shows dictionary popups on hover and can send lookups to Anki; successor to Yomichan.
Zeny
Mobile Apps
A simple money tracker for logging expenses in a few taps, with history, a calendar and charts. The site says it is free forever with no sign-up.
Free planIndie
Zotero
Education & Learning
A research tool for collecting, organizing, annotating and citing sources, developed by a nonprofit and free to use.
Free plan
ティラノスクリプト
Games & Entertainment
A free tool for making visual novel games. Games can be published for PC, smartphones and browsers, and the official site says commercial use has no restrictions.
Free planJapanese UI
ドリトル (Dolittle)
Education & Learning
A programming language designed for education. The official site says it is used in textbooks and supplementary materials for junior and senior high schools and in classes from elementary school to university.
Japanese UI