Productivity
1843 open source Productivity apps
Fcitx5 (Sayura Plugin)
APK
Sayura (Sinhala input method) engine support for Fcitx5
F-DroidGitHub
Fcitx5 (That Plugin)
APK
Thai input method for Fcitx5
F-DroidGitHub
Fcitx5 (Unikey Plugin)
APK
Unikey (Vietnamese input method) engine support for Fcitx5
F-DroidGitHub
Feeel - home workouts
APK
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.
F-Droid
FeelsApp
APK
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
F-DroidGitHub
Feltbok
APK
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.
F-DroidGitHub
Fertility Test Analyzer App: Ovulation & Pregnancy
APK
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
F-Droid
Fiddle Assistant
APK
Music tuner with a logging feature that help to check if the user play in tune.
F-DroidGitHub
Field Survey
APK
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
F-Droid
File Navigator
APK
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!
F-DroidGitHubIzzyOnDroid
File85Toolkit
APK
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.
F-DroidGitHub
FileFlow
APK
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.
F-DroidGitHubIzzyOnDroid
FileManagerSphere
APK
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.
F-DroidGitHub
FileManagerUtils
APK
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)
GitHubIzzyOnDroid
Files
APK
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.
F-DroidGitHub
FillUp
APK
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.
F-DroidGitHub
Finalbenchmark 2 - CPU Test
APK
Finalbenchmark 2 is a comprehensive CPU benchmarking tool. Key Features: • Multi-threaded CPU stress testing with real-time monitoring • Single-core and multi-core performance benchmarks • Temperature tracking during intensive tests
F-DroidGitHub
Finance Manager (PFA)
APK
The privacy friendly Finance Manager helps you keep track of your income and expenses. The app offers the following features: - New transactions You can create new expenses by clicking on the Plus-Button in the bottom right corner in the main view. Now you can enter the amount, a title, a date and a category. Furthermore, you can specify if the transaction is an expense or income. - Transaction overview In the main view you are able to see the total balance of your transactions, as well as a list with all transactions you entered. By long-clicking on the entry you can either edit or delete the transaction. - Categories Under the menu item “Categories” you can see all the categories you created and their total balances, depending on the transactions that are labelled with the respective category. By clicking on the Plus-Button in the bottom right corner you can create new Categories. By long-clicking on the entry you can either edit or delete the category. - Backups You can create a backup of your privacy-friendly-finance-manager database and restore it later with privacy-friendly-backup. You can reach us via Bluesky - @secusoresearch.bsky.social https://bsky.app/profile/secusoresearch.bsky.social Mastodon - @SECUSO_Research@bawü.social https://xn--baw-joa.social/@SECUSO_Research/ Job opening - https://secuso.aifb.kit.edu/english/Job_Offers.php
F-DroidGitHub
Fire Brigade Competition Radio Trainer (HFLÜ Hesse
APK
**Competition Radio Trainer** supports firefighters in preparing for the **Hessische Feuerwehrleistungsübung (HFLÜ)**. It helps practice **radio messages/radio conversations and commands** that appear in the HFLÜ scenarios. **Typical items you can practice (examples from HFLÜ communications)** - **Ausrückemeldung** (response message) - **Eintreffmeldung** (arrival message) - **1st and 2nd Lagemeldung** (situation reports) - Radio calls around **fire fighting radio conversations** **Who is it for?** - HFLÜ competition teams in Hessen **Why this app?** - Faster practice compared to paper checklists - Repeatable drills (solo or team) **Disclaimer** - **Unofficial training tool** for HFLÜ preparation (not an official app from the Hessische Landesfeuerwehrschule). **Misc** - Regular updates of HFLÜ scenarios - Works without an account - Offline use (no internet required for training) - No ads / no tracking
F-Droid
FireFiles
APK
Note: this project seems to be abandoned. No activity since 2018, so updates are disabled. FireFiles is based on AnExplorer. It is a light-weight but powerful file manager for everything that runs on Android OS (Android TV, Android Watch, Mobile, etc) – an all-in-one file management tool. It is Simple, Small, Fast and Efficient File Explorer and is definitely going to hit the mark of being One of the Best File Manager apps on the App Stores. The only file manager to support RTL and show size of folders across the storages. File Manager is designed for all android devices including Phones, Phablets, Tablets and Android TV. It’s a fully designed with Material guidelines by Google. It supports all Android versions from Jellybean, Kitkat, Marshmallow, Nougat down to the new Android O. We don’t take any unnecessary permissions.
GitHubIzzyOnDroid
F
Firefly III Mobile
APK
Unofficial mobile client for Firefly III, a personal finances manager.
F-DroidGitHub
Firefly III Shortcuts
APK
A modern Android application that simplifies daily financial transactions with Firefly III, the popular open-source personal finance manager. - Quick Transaction Shortcuts: Create and use shortcuts for your common financial transactions - Quick Run Widget: All the shortcuts can be run from your home screen via the widget; no need to even open the application. - Clean UI: Modern Material 3 design with intuitive navigation - Secure: Your financial data stays on your device with secure API token storage, obtained by OAuth2 - Fast Synchronization: Efficient data syncing with Firefly III server
F-Droid
FitBook
APK
Never fear being tracked, or served ads with FitBook. Our app is completely free and open source. - Visualize your weight progress with beautiful graphs - Search OpenFoodFacts for all your favorite snacks - Customize absolutely everything to your hearts desires https://github.com/brandonp2412/FitBook
F-DroidGitHub
Fitness Calendar
APK
## Features - Track activities of all kinds - Activity recording - Gpx import - Create custom activity types - Statistics - Basic diary functionality ## Map This app does not connect to the internet by default, but has a setting for enabling [mapLibre](https://maplibre.org/) maps. A nice free provider is [OpenFreeMap](https://openfreemap.org). To use this provider, simply copy the following URL into the 'map provider url' setting in the app: https://tiles.openfreemap.org/styles/liberty ## Public API The app supports a public API which can be used by automation tools. For more information see the main repository Readme. ## Translation Please help to translate on the [Weblate](https://toolate.othing.xyz/projects/fitnesscalendar).
F-DroidGitHub