Open Source

Feeel is an open-source app for doing simple at-home exercises. It holds the acclaimed full body scientific 7-minute workout regime and allows creating custom workouts as well. While the app currently contains a limited amount of exercises, the plan is to drastically expand the number of both exercises and workouts with the help of the community. Contribute at https://gitlab.com/enjoyingfoss/feeel/wikis Donate at https://liberapay.com/Feeel/ . Donations will let me work on the app regularly, rather than just in my free time.

FeelsApp is a diary and emotions logging app. It lets you create simple notes and associate them with emotions. The notes offers full encryption with SQLite database. The app was designed for quick usability. The notes are sorted based on date. The app not only lets you create notes, but also is capable of showing statistics of these notes. *Encryption *Ability to see statistics of the notes *Ability to Encrypt the notes with or without a password *Colour coding for different emotions and feelings *Ability to rate your emotions from 2 to 10

The OK Lab Stuttgart has a project to build fine particulate matter sensors by yourself. The data can then be sent to the database of https://luftdaten.info. This app shows you data from this network. It is not necessary to operate an own sensor to use this app. Currently supported sensor types are: SDS011, SDS021, HPM, DHT11, DHT22, HTU21D, BME280 (temperature & humidity only) Besides the main application, this app also provides three widgets: A small widget that takes minimum space and displays the most current data as text. A large widget that displays the most current data and draws charts for fine particulate matter, temperature and humidity. A large widget that displays the particulate matter concentrations from the sensors around you. This app requires Android 4.4 to run. You can find a short manual and the privacy policy here: https://codeberg.org/Starfish/Feinstaubwidget/wiki

Felicity Music Player is a high-performance, feature-rich audio player designed for audiophiles and music enthusiasts. With a custom-built audio engine and a sleek, dynamic user interface, Felicity delivers an immersive listening experience while maintaining low CPU usage and high efficiency. Whether you're looking for advanced audio processing capabilities or a visually stunning interface, Felicity Music Player has you covered. Features Custom Audio Engine Dual Decoder utilizing both hardware and software decoding through FFmpeg. Custom DSP: The entire audio processing chain (EQ, Bass, Reverb) is written in C++ via JNI. It utilizes ARM NEON SIMD auto-vectorization to process audio arrays with absolute minimum CPU overhead. Supports bass, treble and more. Native downmixing support to pass multichannel audio to stereo output. Advanced Effects: Integrated spatial effects including stereo widening and tape saturation for an analog feel. 10-band Equalizer: A powerful equalizer with 10 adjustable frequency bands up to +/-15 dB with dedicated PreAmp support. Gapless Playback: Seamless transition between tracks without any gaps or interruptions. High-Resolution Audio Support: Support for high-resolution audio formats such as FLAC, ALAC, and DSD for audiophile-grade sound quality. Multi-Channel Audio Support: Support for multichannel audio formats like 5.1 and 7.1 surround sound for an immersive listening experience. Milkdrop Visualizer: Twin buffer enabled Milkdrop visualizer support powered by a native DSP, rendering on GL surface at native fps in real-time. User Interface Fully custom-built and highly optimized interface inspired by Inure App Manager. Dynamic Theming: The app's theme dynamically adapts to the album art of the currently playing track, creating a visually cohesive and immersive experience. Custom Animations: Smooth and visually appealing animations throughout the app, enhancing the user experience and making interactions more engaging. Themes: Multiple themes including light, dark, AMOLED black, Material You and others. Core: Predictive back, edge to edge and adapted to all modern Android UI features. Embedded Lyrics: Reliable, on-the-fly LRC extraction and support for online downloading from LrcLib. Dual Fast Scroll: Simultaneous support for both slide to scroll and jump to letter fast scroll. Realtime Audio Visualizer: A lock-free, zero-allocation visualizer rendering on the Canvas at native fps, powered by a native PFFFT implementation. Library Management Realtime Library Updates: The app automatically detects and updates the music library in real-time as new tracks are added or removed from the device adapted from Peristyle app. All Storage Support: Full support for both internal and external storages including SD cards and USB drives. Auto Scanning: The app automatically scans for new music files and updates the library without requiring manual refreshes. Smart Core True Randomized Shuffle: Choose between Miller and Fisher-Yates shuffle algorithms.

Feltbok is an app to quickly log bird sightings in the field, and later export them to Artsobservasjoner. Does not require logging in or an internet connection. Features: Quick entry of observations in the field Easy export to Artsobservasjoner Optimized species lookup: type one letter to find your bird Map view to choose site Fetch your private sites from Artsobservasjoner Create new private sites Feltbok is made for use in Norway, and the interface is in Norwegian only.

Wide collection of addons, including ad blockers. Improved tracking protection. Private mode available in a single tap. Customizable start screen layout and navigation bar position (top or bottom). Dark theme. Collections of tabs. Synchronization of tabs, bookmarks, passwords, etc. across multiple devices via Firefox Sync. Picture-in-picture mode. Fennec F-Droid browser is based on the latest Mozilla Firefox release. It has proprietary bits and telemetry removed, but still connects to various Mozilla services that can track users.

Fertility Test Analyzer is the best fertility app to help you interpret both pregnancy and ovulation test strips by giving you the % of pigmentation. It provides you with fertility charts based on your hormone levels so you can pinpoint your fertile window and track your early pregnancy days. Fertility Test Analyzer helps you get pregnant, especially if you have PCOS or irregular periods when ordinary ovulation calendars and trackers are not so helpful. It also makes you save money! Now you can buy cheap test strips in bulk knowing that you will be confident about the results once and for all! Fertility Test Analyzer reads pregnancy and ovulation test strips, interprets their results and shows them in an easy and understandable way. Be reassured when reading the pigmentation level of an ovulation test or seeing a very faint line on a pregnancy test. Find out that you are pregnant before a missed period using the most sensitive tests in combination with our app. Join other pregnancy success stories! Using our unique computer vision algorithm, Fertility Test Analyzer recognizes the pigmentation trace present in the test pad and gives you your long awaited answer. KEY HIGHLIGHTS ✔ Read pregnancy and ovulation test strips without any doubts. ✔ Detect ovulation based on your hormone levels. ✔ Predict your fertile window. ✔ Improve your chances of pregnancy by better timing intercourse. ✔ Check on your pregnancy initial days following your hCG evolution with its fertility charts. ✔ Access your data offline and review it when Internet access is not available. ✔ Keep pictures of your tests safely saved in your mobile phone. IMPORTANT LIMITATIONS Fertility Test Analyzer transforms qualitative data,given by the pregnancy and ovulation test strips, into quantitative data (% pigmentation). The accuracy of the numeric value is affected by a number of factors, such as: test quality, how diluted the urine is, the quality of the camera used, your skills in taking a good picture and a correct lighting. Hence, numeric results obtained cannot be taken as exact values, only a laboratory can give those. Use at your own risk. Do not use to avoid pregnancy or anything where more accuracy would be required. Please consult your healthcare provider for any health concern. AUTHORS' NOTE The time has come to say goodbye. Over the last years we created and give support to Fertility Test Analyzer in our spare time as part of a non-profit project. Our intention was to help women to reach their dream of become mothers, and we are happy to see that it has over 70k installations at the time. Sadly we have to admit that we don't have the resources to keep up on new devices and therefore we have taken the decision of release the app to the public domain under a commercial free license. We expect other fertility apps to use this technology in the near future and we think that this is the best way we have to contribute to the well being of women with fertility difficulties. Unfortunately we won't be giving support or maintenance to the app anymore. If you are an Android developer with some free time and want to contribute (there are a couple of things with priority if you have a modern device), the source code is on https://gitlab.com/colnix/fta. Please make a pull request or create a brand new app of your own! The only legal requirement is that you have to use it for good, not for evil :) Thank you for join us throughout this project and we hope to see you soon in another adventure. María and Pablo

Welcome to FetchIt! Easily download media from your favorite platforms and save it to your device. 🎥📸 **Supported Platforms:** * YouTube * Facebook * Instagram * Twitter * TikTok * Reddit * Vimeo * Dailymotion * Pinterest * Snapchat * SoundCloud * Twitch * Tumblr * Bilibili * Loom * Streamable * VK * Rutube * Bluesky * Vine * OK ⚠️ **Disclaimer**: The app developer does not have any relationship or agreement with any of the platforms listed above. For more info or to report issues, visit the [GitHub repository](https://github.com/tharunbirla/FetchIt/issues).

A medieval strategy game with countless unique and challenging levels. You play on a randomly generated island made of hexagons. Your goal is to conquer all of it. To do so, you attack the enemy with your units while trying to protect your own kingdoms.

This Android app stores your SSH key phrase and sends it to your PC securely via the LAN when an authorized fingerprint is detected by the Android fingerprint scanner. This app is free open-source software (licensed MIT) The PC must either run Linux or Windows to use FiSSH. FiSSH for Linux is available on GitLab together with install instructions at: https://www.gitlab.com/ioanm/fissh-desktop/blob/master/INSTALL.md. FiSSH for Windows uses the Windows Subsystem for Linux. The Windows edition is also open source and published to: https://www.gitlab.com/ioanm/fissh-windows. To install FiSSH for Windows run the command inside WSL (Windows Subsystem for Linux) UBUNTU distro: curl https://www.gitlab.com/ioanm/fissh-windows/raw/master/Release/install.sh | sudo bash The PC app then returns the received passphrase to OpenSSH and the standard ssh binary completes the login process. It is important to note that none of the FiSSH apps have access to private key file and that FiSSH uses TLS sockets with certificate validation to prevent man-in-the-middle attacks! Source Code: Linux part - https://www.gitlab.com/ioanm/FiSSH-Desktop Android app - https://www.gitlab.com/ioanm/FiSSH-App

Music tuner with a logging feature that help to check if the user play in tune.

Your field logbook, on your phone - build any survey, powered by your device. • Fits almost any field survey — define your own sections and variables with a simple template • Let your device do the work — automatic timestamps, one-tap GPS, and photos attached right to each record • Capture once, export clean — your data goes straight into an accurate, analysis-ready spreadsheet • Private by default — your data stays on your device, no account or third-party cloud required ── How it works ── 1. Get a template — a .yaml file that defines your survey's structure 2. Import it — paste a URL, scan a QR code, or open a local file 3. Collect data in the field — quickly log each new observation 4. Export when done — get an XLSX or ODS spreadsheet for analysis Step-by-step walkthrough: https://pufstudio.net/apps/field_survey/get_started ── Design your own survey ── Field Survey runs on templates you define, so it fits almost any survey: • Organized into sections — build your survey from sections that nest parent-to-child, each holding its own variables • Variable types — Text, Int, Float, Boolean, Date / Time / DateTime, Option, OptionCount (count per option), Map (location, path, polygon), Photo, Markdown (with more types on the way) • Deeply configurable — adjust both sections and variables to fit your exact workflow (full list in the guide) Template guide: https://pufstudio.net/apps/field_survey/template_guide ── Permissions ── Field Survey only asks for what a feature needs: • Internet — to load map tiles and import templates from a link • Location — to show your current position on the map • Camera — to take photos for photo variables • Photos & storage — to attach images and save your exported spreadsheets ── What's next ── Planned ideas include more variable types, multiple languages, iOS support, and optional sync to your own server. This is a solo project — your feedback and support help these arrive sooner. ⚠ Alpha software In real-world use for about a year, but not yet tested at large scale. Provided "as is", without warranty; the author is not liable for data loss. Always verify your exports and keep independent backups. Found a bug or have an idea? https://codeberg.org/even311379/FieldSurvey/issues

Welcome to File Navigator - Your Ultimate File Sorting Solution! Are you tired of cluttered files on your device? Seeking a streamlined way to organize and manage them? Look no further! File Navigator is here to transform your file management experience. Key Features: 🔍 File Type Customization: File Navigator puts you in control. Select the specific file types you want to navigate, including Images, Videos, Audio, Text, APKs, PDFs, and Archives. 📁 Effortless File Organization: Configure the app to match your preferences. File Navigator allows you to define where different file types should be stored, ensuring they end up in the right place every time. 📬 Instant Notifications: When new files of your chosen file types are detected in your system, File Navigator sends you instant notifications. No more surprises - you'll always be up-to-date. 🚀 Seamless File Movement: With a simple tap from the notification, you can select the destination folder for the new file. No more manual searching and sorting. 🛡️ Precise Permissions: To deliver these exceptional features, File Navigator requests the 'access to manage all files' permission. Rest assured, this permission is solely used to move files you explicitly command to be moved. 📱 Simplify Your Digital Life: File Navigator is the ultimate solution to keep your files organized and readily accessible. Enjoy a clutter-free device and manage your files with ease. Don't let file chaos overwhelm you. Say goodbye to clutter and embrace the power of precise file management!

File85Toolkit is an Android utility app designed for efficient file management through compression and decompression. ✨ Features: - Compress files using LZMA, then encode them with Base85 for compact storage and sharing. - Decompress files by Base85 decoding and then extracting with LZMA. - Modern UI with Material 3 and Jetpack Compose support. - Fully open source, privacy-friendly, no ads. File85Toolkit helps you save space and move files with ease, all directly on your Android device.

This application is a mobile client for FileBin and it’s open source. It helps you to manage your pastes.In order to use the application, you need access to a FileBin instance.

FileFlow scans your files periodically and organizes them according to your rules.Features:Rules: Use regex to precisely target files.Actions: Choose what to do with the files - copy, move, rename, zip, emit, or delete.Schedule: Choose when and how often rules run.History: Recent executions are stored (locally).Shortcuts: Execute groups of rules from your homescreen.Private: Fully offline; your data never leaves your device.Lightweight: Runs in the background with minimal battery and memory usage.

The FileManagerSphere is a powerful file management tool designed to simplify and enhance your experience when dealing with documents, media, and other file types. With advanced features and an intuitive interface, FileManagerSphere provides a comprehensive solution for organizing, navigating, searching, and manipulating your files with ease. Features - Open source: Lightweight, clean, and secure. - Material Design: Follows the Material Design guidelines, with attention to details. - File support: View, extract, and create common compressed files. - Themes: Customizable user interface colors, plus optional true black night mode. - Elegant widgets that automatically adapt to your size - Well-implemented: Built upon the right things, including Java NIO File API and LiveData.

FileManagerUtils add a lot of features to the android default file manager:SFTP ClientApk extractor (not compatible with android 11)Root file explorer (you need a rooted device)Create file shortcuts (from android 8.0)

Zero-knowledge encrypted cloud storage from Germany with open-source clients.

DocumentsUI Shortcut is a tiny launcher for Android's built-in Files / DocumentsUI app. It does not request storage permission, does not read files, does not use the network, and does not run a background service. Tapping the launcher icon opens the system file manager in browser mode when supported by the device. Access to Android/data and Android/obb is controlled by Android and the device vendor's DocumentsUI implementation.

Filester is the cloud storage solution that respects your privacy and puts you in control. No more intrusive ads or sneaky data collection. Just one tap and you're ready to store, share, and access your files from anywhere in the world. With support for a wide range of devices and multiple languages, Filester works seamlessly across your Android ecosystem. So whether you're rocking a classic or a cutting-edge phone, your files are always within reach. Features * Privacy-first: We do not have access to your files. * Ad-free experience: Focus on what matters without annoying interruptions. * No account required: Get started instantly, no sign-ups or commitments. * Universal compatibility: Works across a wide range of devices.

Decentralized file sharing and collaboration platform using peer-to-peer storage.

When you buy fuel, just enter the amount you purchased and your current odometer value; FillUp will calculate your mileage and maintain a log of your fill-ups. * Manages data for one or more vehicles. * Calculates and plots average gas mileage. * Calculates and plots monthly totals for gas purchased and distance driven. * Stores all data on the device – doesn't use your data plan. * Can import/export your data to CSV files on your sdcard. * Share the CSV files with other Apps for cloud backup! * Selectable units of measurement – can calculate: * miles per gallon (MPG) * kilometers per liter (KM/L) * liters per 100 kilometers (L/100KM) * miles per imperial gallon (UK MPG) – from miles and liters. * miles per imperial gallon (UK MPG) – from kilometers and liters.

Checks the status of photo orders. Currently only Rossmann (only in Germany) and DM (Germany and Austria) are supported.