Apps
Jamu
APK
An app to help learn Japanese. Features Gojuon (五十音) Numbers (数字) NHK Easy News Quiz
F-DroidGitHub
Janus
APK
Janus provides contextual word and concept translations by leveraging the vast, human-curated knowledge graph of Wikipedia. Instead of literal machine translation, it finds the corresponding Wikipedia article in the target language to offer a more accurate and context-aware translation. Features: * Contextual Translation: Uses Wikipedia article titles for accurate, context-aware translations. * Multi-Language Support: Translate from any Wikipedia-supported language to any other. * Rich Information: Displays short descriptions and article summaries. * Full History & Bookmarks: Keeps a log of translations and allows saving important ones. * Searchable History: Quickly find past translations. * Quick Actions: Copy translations and open Wikipedia articles. * Modern UI: Clean interface supporting light and dark themes.
F-DroidGitHub
Japanese Name Converter
APK
Converts any name from English into Japanese characters. Learn to write and pronounce your name in katakana, or even create a good approximation in kanji! Works best on common American first names. Combine different kanji to change the meaning, save your favorites, share via Identi.ca, email, SMS, etc.
F-DroidGitHub
Japanese Traditional Time
APK
A clock widget based on the traditional Japanese time system. * Widget showing the current hour (named after an animal) * Mapping of traditional time to local time * (Eventually) Alarms based on traditional time The sunrise and sunset times for are calculated locally by the app for the current location; if the device doesn't know that you can enter a manual one.
F-DroidGitHub
Jargons Colombia
APK
Jergas Colombia is a brief Colombian dictionary. - Useful for residents in Colombia and foreigners since it allows to consult the most used jargons in Colombia-South America. - Slang is the use of informal words and expressions that are not considered standard in the speaker's dialect or language. - In addition to jargon, you will also find a large number of indigenous and old Spanish elements, as is the case in the department of Tolima. - Jergas Colombia will always be at your fingertips without requiring internet. - If you are a resident you will be able to understand locals from other regions of Colombia. - For tourists or foreign residents it will be a great help to maintain a more fluid dialogue with Colombians.
F-Droid
Jass board
APK
Jass board to count the points while playing Jass simply with the Android smartphone or tablet. It is possible to write the points at the Schieber, Coiffeur, Differenzler, Molotov and other Jass types. ************************* For all boards it is possible to have several profiles. Settings and scores are stored independently. For example, you don't have to delete an unfinished round to be able to play Jass with other players. Even if different rules are used depending on the composition, this can easily be solved by a profile. The current profile can be shared by AndroidBeam (NFC) simply with another device. For this the board of one device has to be open and the devices have to be held back to back. This is helpful, for example, when the battery is empty or when complex profile settings have to be made. ************************* Schieber panel: - Write points individually (1/20/50/100) for Weis,... - Write complete rounds incl. multiplier (1x-7x) and opponent points - Input dialog can be rotated (for 1 or 2 writers) - Individual entries or complete rounds can be undone. - Different number of target points possible - Adjustable score per round (e.g. for double cards 314) - Extensive statistics - Backside to write down strokes for wins/matches,... Coiffeur board: - The types of jass can be chosen according to your preferences. - 16 predefined jass types + the possibility to enter your own (without picture). - The number of rounds played can be between 6 and 12. - It can be written for 2 or 3 teams. - Multipliers can be changed manually if desired. - Statistics about achievable points as well as conditions how a team becomes unreachable. - If a team is unreachable, this will be displayed. Differenzler board: - 2-8 players - Announcements remain hidden until the first points have been entered. - Points from the last outstanding player are automatically calculated. - Points from the last round can be changed afterwards (long press). Molotov board: - 2-8 players - Writing Weis in 3 clicks - When writing rounds, the outstanding points are calculated automatically. - Points can be edited later (long press) - Points can be written exactly or rounded. Score board: This is a general score board, which should allow you to write many more types of Jass. - 2-8 players - Target points / number of rounds can be set - In order to be able to write faster, the number of points per round can be set. (Outstanding points are calculated automatically). ************************* The source code of the app is available online: https://github.com/simonste/jasstafel
F-DroidGitHub
Java OOP Quiz
APK
Java OOP Quiz App is an interactive mobile app designed to help users test and improve their knowledge of Object-Oriented Programming (OOP) concepts in Java. It features a variety of quizzes that cover essential topics like classes, inheritance, polymorphism, and interfaces, with immediate feedback to enhance learning. The app includes a smooth user interface and progress tracking.
F-DroidGitHub
Java installer
APK
Install a full Java runtime on the phone. The app downloads the required files from a HTTP server unpacks them and copies them to the right directory.
F-DroidGitHub
Jeden Tag ein Set
APK
"Quality instead of Quantity" A german site for electronic music with a set every day. Our set collection already fills multiple hard disks and the orange cloud is basically our home. Regularly we search through it for new treasures. On weekends we show up in clubs all around Germany, always on the search for the perfect set. The Jedentageinset app can be used as a companion for NewPipe or SoundCloud.
F-Droid
JekyllEx
APK
JekyllEx is a powerful IDE designed specifically for Jekyll projects. Build, preview, and publish your Jekyll based websites right from your device. GitHub Pages environment with Ruby and default gems embedded natively. Built-in Git for version control. Easily connect to your GitHub account. Powerful terminal UI with multiple sessions support. Desktop level experience. Create new sites locally / import existing ones from a remote source. Easy file / folder management. Create, download from url or load from storage. Built-in code editor with syntax highlighting. Custom themes available. Live previews for running jekyll server with automatic reloading. Preview the site offline in any browser right on device before publishing. Secure by default. No third party backend. Everything stays offline. Make quick edits to your Jekyll site on the go in a mobile-friendly interface. Visit the project website for more information and documentation.
F-DroidGitHub
JellyBook
APK
JellyBook is a book and comic reading app for Jellyfin. Its a app thats meant to allow you to read your files from Jellyfin on mobile. Supported file formats include:.cbr & .rar: cbr (Comic Book aRchive) is a proprietary file format so is not necessarily encouraged..cbz & .zip: another Comic book format.pdf: the Portable Document Format as you know it.epub: Electronic PUBlication is a wide-spread eBook formatMore formats will be added over time.
GitHubIzzyOnDroid
Jellyfin - your media in your hands!
APK
Your media, on your terms. The Jellyfin project is an open source, free software media server. No fees, no tracking, no hidden agenda. Get our free server to collect all your audio, video, photos, and more in one place. To use the app, you must have a Jellyfin server set up and running. Find out more at jellyfin.org. With a Jellyfin server, you can: * Watch Live TV and recorded shows from your Jellyfin server (additional hardware/services required) * Stream to a Chromecast device on your network * Stream your media to your Android device * View your collection in an easy to use interface This is the official Jellyfin companion app for Android. Thank you for using Jellyfin!
F-DroidGitHubIzzyOnDroid
Jellyfin for Android TV
APK
Your media, on your terms. The Jellyfin project is an open source, free software media server. No fees, no tracking, no hidden agenda. Get our free server to collect all your audio, video, photos, and more in one place. To use the app, you must have a Jellyfin server set up and running. Find out more at jellyfin.org. With a Jellyfin server, you can: * Watch Live TV and recorded shows from your Jellyfin server (additional hardware/services required) * Stream to a Chromecast device on your network * Stream your media to your Android device * View your collection in an easy to use interface This is the official Jellyfin companion app for Android TV. Thank you for using Jellyfin!
F-DroidGitHub
Jerboa for Lemmy
APK
Jerboa is an app for Lemmy, a federated reddit alternative. Jerboa is made by Lemmy's developers, and is free, open-source software, meaning no advertising, monetizing, or venture capital, ever. Lemmy is similar to sites like Reddit, Lobste.rs, or Hacker News: you subscribe to forums you're interested in, post links and discussions, then vote, and comment on them. Behind the scenes, it is very different; anyone can easily run a server, and all these servers are federated (think email), and connected to the same universe, called the Fediverse.
F-DroidGitHubIzzyOnDroid
JetBird
APK
JetBird is a wrapper around the NetBird client and is privacy friendly, containing no blobs or trackers. ## Features - Native UI - Supports SSO and setup keys - Supports pre-shared keys - Real-time logs - Quick tile - Exclude apps from the tunnel - Exit nodes (with client-side customisation) - Android TV support - Lazy connection support
F-DroidIzzyOnDroid
JetSpacer
APK
JetSpacer pulls data from multiple NASA APIs and wraps it all in a minimal UI.Features:Custom pagination for APOD Archive, Mars Gallery, and Headlines.Search APOD, Mars Rover Photos, and NASA Image Library.EPIC shows latest Earth imagery.Bookmarking for APOD and Mars Rover Photos.Caching support for Headlines with manual clear option.Default API key included (or use your own: NASA API Signup).
GitHubIzzyOnDroid
Jigsaw
APK
A jigsaw puzzle game made with Godot 4 that is using your own pictures. Features: Multitouch Straightforward interface Free from ads and other annoyances The ‘Manage external storage’ permission is currently required to access your pictures. Feel free to explore the source code, report bugs, and contribute to the project.
F-Droid
JioFi Battery Notifier
APK
This is a very small android app with only one purpose. Show percentage notification of battery for JioFi device which is used for access internet with Jio Sim. App will send alerts and notifications on Low battery and Full Battery. You can customize these options in the app. Refresh interval - How fast you want to check the battery percentage. Low Battery Level - After what level app should you notify that battery is low and you should connect a charger. Low Battery Alerts - Should app send alerts or only display notification. Alert Sound - Should app play sound with alerts. Alert Vibrate - Should app play vibration with alerts. JioFi Panel - Access JioFi Panel from the app.
F-DroidGitHub
Jiten Japanese Dictionary
APK
Jiten is a Japanese dictionary based on JMDict/Kanjidic This is the offline android version of https://jiten.obfusk.dev. The large download size is because it includes all the dictionary data, including audio. NB: the app will take a while to load the first time it is started (or after an update), but it will load a lot faster afterwards. Features: JMDict multilingual japanese dictionary • kanji, readings (romaji optional), meanings & more • meanings in english, dutch, german, french and/or spanish • pitch accent (from Wadoku) • browse by frequency/jlpt Kanji dictionary • readings (romaji optional), meanings (english), jmdict entries, radicals & more • search using SKIP codes • search by radical • handwritten kanji recognition • browse by frequency/level/jlpt/SKIP Example sentences (from Tatoeba) • with english, dutch, german, french and/or spanish translation • some with audio Stroke order • input a word or sentence and see how it's written Fine-grained search using regexes (regular expressions) • simple searches don't require knowledge of regexes • quick reference available • Dark mode • Search history (stored locally) • Use long press for tooltips: quickly see meanings and readings for kanji and words • Easily share and open jiten.obfusk.dev links • Convert romaji to hiragana and between hiragana and katakana No ads. No trackers. The source code is 100% Free and Open Source (AGPLv3+) and the data is available under Creative Commons or similar licenses (some non-commercial); for details, see https://github.com/obfusk/jiten#readme To report bugs and request features, please use the issue tracker at https://github.com/obfusk/jiten/issues Questions and feedback are welcome at https://github.com/obfusk/jiten/discussions or jiten@obfusk.dev
F-DroidGitHub
Jiten Japanese Dictionary [Online]
APK
Jiten [Online] is a Japanese dictionary based on JMDict/Kanjidic This app essentially provides the same functionality as opening the https://jiten.obfusk.dev website in a web browser — but with some small advantages (like long press for tooltips). There is also a completely offline version — named simply "Jiten Japanese Dictionary" — which requires more storage space (and could be slower depending on your device and internet connection). You can install both at the same time if you want. Features: JMDict multilingual japanese dictionary • kanji, readings (romaji optional), meanings & more • meanings in english, dutch, german, french and/or spanish • pitch accent (from Wadoku) • browse by frequency/jlpt Kanji dictionary • readings (romaji optional), meanings (english), jmdict entries, radicals & more • search using SKIP codes • search by radical • handwritten kanji recognition • browse by frequency/level/jlpt/SKIP Example sentences (from Tatoeba) • with english, dutch, german, french and/or spanish translation • some with audio Stroke order • input a word or sentence and see how it's written Fine-grained search using regexes (regular expressions) • simple searches don't require knowledge of regexes • quick reference available • Dark mode • Search history (stored locally) • Use long press for tooltips: quickly see meanings and readings for kanji and words • Easily share and open jiten.obfusk.dev links • Convert romaji to hiragana and between hiragana and katakana No ads. No trackers. The source code is 100% Free and Open Source (AGPLv3+) and the data is available under Creative Commons or similar licenses (some non-commercial); for details, see https://github.com/obfusk/jiten#readme and https://github.com/obfusk/jiten-webview#readme To report bugs and request features, please use the issue tracker at https://github.com/obfusk/jiten/issues Questions and feedback are welcome at https://github.com/obfusk/jiten/discussions or jiten@obfusk.dev
F-DroidGitHub
Jitsi Meet
APK
Jitsi Meet lets you stay in touch with all your teams, be they family, friends, or colleagues. Instant video conferences, efficiently adapting to your scale. * Unlimited users: There are no artificial restrictions on the number of users or conference participants. Server power and bandwidth are the only limiting factors. * No account needed. * Lock-protected rooms: Control the access to your conferences with a password. * Encrypted by default. * High quality: Audio and video are delivered with the clarity and richness of Opus and VP8. * Web browser ready: No downloads are required of your friends to join the conversation. Jitsi Meet works directly within their browsers as well. Simply share your conference URL with others to get started. * 100% open source: Powered by awesome communities from all over the world. And your friends at 8x8. * Invite by pretty URLs: You can meet at the easy to remember https://MySite.com/OurConf of your choice instead of joining the hard to remember rooms with seemingly random sequences of numbers and letters in their names.
F-DroidGitHub
Jiyi
APK
Jiyi is a cross-platform encrypted voice note application. Protect Your Privacy: In today's world where cloud services are increasingly prevalent, privacy has become a black box. All features of Jiyi run locally to fully protect your privacy. Hear Past Selves: In the hustle and bustle of life, writing a diary seems like a luxury. Open your phone and record a short voice note to capture the present moment. Visualize Your Journey: Explore the world and leave behind voice notes in different corners! Jiyi supports recording the location at the time of recording, helping you visualize your travels.
F-DroidGitHub
Joplin
APK
Note: This release can lag significantly behind the official release which can be an issue when a timely update is needed. It may be less secure because the app might have a known security vulnerability for several days, even if the official app has been patched. It does not have camera capabilities nor location functions. Issues with this version might be raised on https://gitlab.com/fdroid/fdroiddata for user @muelli Joplin is a note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, can be copied, tagged and modified either from the applications directly or from your own text editor. The notes are in Markdown format. Notes exported from Evernote and other applications can be imported into Joplin, including the formatted content (which is converted to Markdown), resources (images, attachments, etc.) and complete metadata (geolocation, updated time, created time, etc.). Plain Markdown files can also be imported. The notes can be securely synchronised using end-to-end encryption with various cloud services including Nextcloud, Dropbox, OneDrive and Joplin Cloud. Full text search is available on all platforms to quickly find the information you need. The app can be customised using plugins and themes, and you can also easily create your own. The application is available for Windows, Linux, macOS, Android and iOS. A Web Clipper, to save web pages and screenshots from your browser, is also available for Firefox and Chrome.
F-DroidGitHub
Jotter
APK
Jotter is a simple, privacy-friendly notes app that's free, beautiful, and yours. Quickly jot, edit, and organize thoughts without ads, tracking, or clutter—all stored safely on your device.
GitHubIzzyOnDroid
Journal
APK
PsychonautWiki Journal can help you keep track of your substance use and give you insights on your consumption patterns. The substance info comes from PsychonautWiki with some additional info from Tripsit and saferparty.ch The app is designed to work fully offline. The data you enter in the app never leaves your device.
F-DroidGitHub