Productivity

1843 open source Productivity apps

C
CPU Stats
APK
Simple tool that displays usage details of the CPU within the statusbar. Features: * 6 & 8 Core CPU Support!! (2 notification icons) * Single Core, Dual Core (NVIDIA Tegra 2), & Quad Core (NVIDIA Tegra 3) support!! * Statusbar notification for CPU Usage * Statusbar notification for CPU Frequency
F-DroidGitHub
CTU Menza
APK
This Android app shows dish menus for CTU cafeterias from agata.suz.cvut.cz web in much more pleasant and usable way for phones. It shows today and week menu, opening hours, contacts, announcements and address for all the canteens. It supports dark mode and Material You including Android 12 dynamic theming.
F-DroidGitHub
Cache Cleaner
APK
Since the release of Android 6 (Marshmallow), the option to clear the cache of all apps at once has been restricted by Google to system apps only. This means that users no longer have the convenience of clearing the cache of all their apps simultaneously. To clear the cache of individual apps, one must manually navigate to each app's "App Info" screen, locate the "Storage" menu, and then select the "Clean cache" button. To simplify this process and save time, Cache Cleaner requests a list of installed apps on your device and utilizes the Accessibility service to replace the manual steps involved in clearing the cache. This allows for a more convenient and automated process of cache cleaning. Cache Cleaner provides the added benefit of customizable app lists. This functionality allows you to create personalized lists of specific apps, giving you the flexibility to selectively clear the cache of only the apps you choose.
F-DroidGitHub
C
Cache Cleaner Widget
APK
A lightweight Android widget to clean all app cache directories with a single tap. Runs silently using root access. No activity or user interface. Executes a native C binary and shows a toast on success. Ideal for minimal, root-enabled setups.
F-Droid
Caff
APK
Caff provides a quick settings tile that allows the display to be kept on for an extended period of time. By tapping the tile, it is possible to toggle caffeine mode and cycle between different preset durations. The tile also serves as a countdown timer when caffeine is enabled. By long-pressing it, a preferences menu is shown, allowing the user to choose which durations will be cycled through. Additionally, there is an "infinite" mode, which will keep the display on indefinitely. Note You may have to disable battery optimizations for the app to work.
F-DroidGitHub
Caffeinate
APK
Caffeinate is an App that helps android developers to keep their phone's display awake without having to change the device settings. It can be toggled at various places:a tile in the quick settings, the place that holds the toggles for e.g. Wi-Fi and Bluetooth. Requires Android 7 or higher. a button in the app itself Features Uses android's WakeLock Class with either SCREEN_DIM_WAKE_LOCK or SCREEN_BRIGHT_WAKE_LOCK lock level based on user settings Timeout period is configurable Switch timeouts from the quick settings tile or the button in the app. clicking them, selects the next timeout and after 1 second the timeout will start, if the quick settings tile or the button are clicked after starting, the timeout will stop. Available timeouts are [30 seconds, 05 minutes, 10 minutes, 15 minutes, 30 minutes, 60 minutes, Ꝏ] An option to enable the screen to dim while the WakeLock is acquired An option to enable holding the WakeLock if the screen is locked, so that the screen will keep on after unlocking, default behaviour is that the WakeLock is released when the screen is locked Multiple theming options [light, dark, system default and material you]
F-DroidGitHubIzzyOnDroid
Caffeine
APK
Note: author declared end-of-life for this app, so future updates are unlikely. Caffeine is an app that keeps your phone awake for a certain time. Time options are 1, 5, 10, 30, and 60 minutes. There is also an infinite time option.
GitHubIzzyOnDroid
C
CalEF (Calendar Entry Formatter)
APK
Making an appointment means Add date, time and title of the appointment to the Android-Calendar In Android-Calendar-Detailview use Send/Share (from menu or toolbar) Select "CalEF" as share destination (to convert to human readable text) Select the final Send/Share destination (clipboard, sms, mail, ...) Usually calendar entries are shared in a human-unreadable technical format "ICS" (or "VCS") that calendar programs can read. CalEF receives the technical format and re-sends/re-shares it-s content as human readable text. Date/Time is formatted according to current language/locale. CalEF can also process "ics" (or "vcs") files (i.e. from a calendar backup). Requirements: Android-4.4 (api 19) or later. Permissions : None Compatible with Etar-Calendar version 1.0.29 or later (January 2022) Simple-Calendar version 4.0.0 or later (May 2018) Buildin Android-Calender (Tested with android-10 on LG device) Backup Calendar Import-Export version 2.4 or later (November 2016)
F-DroidGitHub
CalcYou
APK
CalcYou is a privacy focused calculator app that is not just a calculator. Solve everyday problems with the intuitive basic calculator, or delve into advanced functions with the powerful scientific calculator. Feeling lost in a sea of units? CalcYou's versatile unit converter can convert lengths, weights, volumes, and more. Need to express complex equations? Access a vast library of symbols, including Greek letters, arrows, superscript, and subscript, all with a few taps. You want to quickly draw a mathematical function to understand its shape? No worries, CalcYou can plot it for you.
F-DroidGitHub
Calculator
APK
Calculator is a privacy-friendly calculator for complex functions, coming with a simple user interface and, by default, a dark theme. It has no ads or unnecessary permissions.
F-DroidGitHubIzzyOnDroid
C
Calculator Notification
APK
How many times did you want to use calculator without suspending the app that you are currently using? Now it's possible with Calculator application in the notification area. The app is very minimalistic, but it includes all the essential functionality, including copying and pasting data. Design was inspired by the official Android calendar application. On Android Nougat and later you can add settings tile for the Calculator, so you do not need to leave any app to launch the Calculator.
F-DroidGitHub
Calculator You: Math & Units
APK
Discover the ultimate calculator experience with our beautifully designed app, featuring 60+ stunning color themes to match your style. Whether you're tackling complex scientific equations or simple everyday calculations, our powerful and user-friendly interface makes it all easy. Key Features: 🎨 Beautiful Design & 60+ Color Themes: Personalize your calculator with a choice of 60+ vibrant color themes, making every calculation visually enjoyable. 🔬 Scientific Mode: Access advanced mathematical functions with our comprehensive scientific calculator, perfect for students, engineers, and math enthusiasts. 🕒 History: Easily track and review previous calculations with our handy history feature, ensuring you never lose important work. 📏 Unit Converter: Convert units effortlessly with our built-in converter, supporting a wide range of measurements, including length, weight, and more. 👌 User-Friendly Interface: Enjoy a clean, intuitive interface designed for effortless navigation and efficient calculations. Whether you're a student, professional, or anyone in between, our calculator is your go-to tool for all your math and conversion needs. Download now and elevate your calculation experience! Made not with love❤️, but by love❤️.
F-DroidGitHubIzzyOnDroid
Calculator-inator
APK
Calculator-inator is a Calculator & Converter for Android inspired from Google's Calculator App. The app features: Basic & Advanced Calculator with logarithmic and trigonometric functions. Length, Area, Mass, Speed, Pressure, Data, Volume, Time, Temperature, Angle Live Currency Converter.
F-DroidGitHub
Calendar Trigger
APK
Trigger various actions on different types of calendar event, and handle overlapping events wanting different ringer states in a sensible way (the "quietest" state wins). Also the start and end actions for an event can be delayed until the device is in some particular state.
F-DroidGitHub
Calisthenics Memory
APK
A privacy-focused bodyweight training tracker. Customize everything — exercises, training methods, and workflow — to match your needs. No rigid templates. Adapt the app to your training style. To Do • Plan your workout as a list, tap to jump directly • Schedule repeats by day of week to automate your weekly routine Record Mode • Quickly log your workouts after training Workout Mode • Auto-guided training with built-in timers • Single: Timer-assisted rep counting and isometric hold tracking • Program: Create and run multi-exercise routines in sequence • Interval: Timed work/rest cycles with customizable rounds • Programs and intervals are built by freely combining your own exercises Exercise Creation • Create any exercise with any name, organize into groups • Choose rep-based (dynamic) or time-based (isometric) tracking • Support for unilateral (one-sided) exercises • 10-level progressions to match your method • Optional distance, weight, and assistance tracking • Favorite exercises (★) for quick access • Add optional description notes to each exercise Progress Tracking • Calendar: See your training activity at a glance • List: Browse all sessions chronologically • Graph: Visualize trends with average/max/total stats • Challenge: Color-coded goal achievement tracking • Period filters (1 week, 1 month, 3 months) Data Management • Export/import in JSON/CSV format • Your data stays on your device, no internet required Convict Conditioning, StartBodyweight, RR (Recommended Routine), HIIT, circuit training — whatever your method, this app adapts to you.
F-DroidIzzyOnDroid
Call Limiter
APK
Call Limiter is a simple, open-source Android app that helps you take control of your phone calls. Set time limits for specific contacts and let the app automatically hang up when the limit is reached — making it easy to save time, avoid distractions, and manage conversations better. Features: Per-Contact Call Limits: Define custom call durations for individual numbers. Automatic Hang-Up: Calls are disconnected when the chosen time is reached. Easy Time Selection: Choose limits using a bottom sheet scroll wheel for a smooth experience. Global Call Limit: Set default time limit for all contacts. Persistent Storage: Your limits remain saved until you decide to change or delete them. Flexible Editing: Update or remove call limits anytime with ease. Emergency Buffer: Add a few extra seconds for urgent or unexpected needs. Modern Theming: Supports both light and dark modes, adapting to your system theme. Privacy-Focused: Works entirely offline — no internet, no tracking, no data sharing. Stay in control of your conversations with Call Limiter — lightweight, private, and designed to fit seamlessly into your daily calling habits.
F-DroidGitHubIzzyOnDroid
Calorimeter
APK
With Calorimeter you can track your daily calorie intake. Build your own database of your favorite foods. Or scan the foods that you buy. As simple as it gets.
F-Droid
Calyx - Grow Tracker
APK
Calyx tracks indoor garden environments, plant schedules, and hardware. Commercial alternatives lock features behind cloud subscriptions and isolate data from local smart devices. Calyx stores its 30,000-strain database entirely offline and integrates directly with Home Assistant to control grow room sockets without a monthly fee. Environment and hardware control The application queries the Home Assistant REST API to display temperature, relative humidity, and Vapor Pressure Deficit (VPD). Users toggle smart sockets directly from the application interface. Calyx also monitors for light bleed during scheduled dark periods and pushes an alert if it detects illumination. Plant and tent management Users define physical grow tents and assign plants to them. The application references an offline database of 30,000 strains. When a user logs a plant, an automatic calculator uses the strain genetics to determine the optimal harvest window. Growers capture and view chronological photos in a full-screen gallery overlay, which renders the days since germination and current growth phase on the image. Feeding and scheduling The application provides a nutrient solution recipe database to store feeding mixtures. Users assign custom quick actions, such as pruning or nutrient application, to individual plants. Tapping a nutrient action automatically attaches a specific recipe and liquid volume to the plant's history. A soil moisture reading below 30% places a watering indicator on the calendar. Self-hosted Backend While Calyx works entirely offline, power users can optionally deploy the included self-hosted backend using Docker. Connecting the application to your own backend enables advanced multi-device synchronization and external database storage, guaranteeing that you remain in complete control of your data.
F-DroidGitHub
CamCov
APK
Gain more safety while walking with your eyes on the screen. Alert: This app does not have Super Cow Powers. Do NOT rely on this app. Dut to technical issues, this software actually uses the camera as a translucent covering layer (overlay). However, that behaves quite similar to using it as background. Similar software: transparent screen Interoperable by Broadcast/Intent. See INTEROPERABILITY.md in the source code for details.
F-DroidGitHub
C
Camera Folder
APK
When "Camera Folder" is installed, any Android app that can open jpg files can also take a photo from camera. Note that "Camera Folder" has no user interface and no start icon of its own. The app is super tiny: 0.16 MB
F-DroidGitHub
C
Camera Silencer
APK
Camera Silencer monitors Android camera availability and temporarily reduces audio output only while another app is using a camera. It is designed for devices and camera apps where public Android audio APIs can suppress or reduce shutter sounds without root access. Features: - No camera permission - No internet permission - No accessibility service - Optional minimal Usage Access, only to confirm that a camera app is in the foreground - No overlay permission - No DND policy access - Foreground service restores audio when the camera is released - Optional modes for silent/vibrate-following, always-on camera silencing, and manual control Limitations: - Effectiveness depends on the device, OS build, region configuration, and camera app implementation. - Some camera apps may use enforced audio paths that cannot be suppressed reliably with normal app permissions. - Without Usage Access, Camera Silencer falls back to screen-on/unlock heuristics and may not perfectly distinguish face unlock from lock-screen camera shortcuts. - When another app keeps media audio active, such as Picture-in-Picture or background playback, Camera Silencer may leave camera sounds audible to avoid interrupting that playback. - If suppression stops working after the camera app was opened first, force stop the camera app once and start Camera Silencer before opening the camera again.
F-DroidGitHub
Can I Drive
APK
Can I Drive allows you to track your recent alcohol consumption, to assess if you can drive or not. What is shown to you : - a clear status (OK, OK but not sober, NO GO) - your estimated blood rate - time when you can drive again - time when you get sober again (0.0 g/L) Computation takes into account : - weight - sex - rough health indication - driver legal status (country, young driver, professional) - drinks (how much alcohol and when) If the chosen country is not available, you can select OTHER to override the threshold value with your own.
F-DroidGitHub
Candle
APK
A very simple app that allows you to use your display as a flashlight. The brightness can be adjusted, the color can be set, and the app can be started from a quick settings tile.
F-DroidGitHub
Canta
APK
Canta allows you to uninstall any(*) app from your device, even if you don't have root access. You'll need to install Shizuku (https://shizuku.rikka.app/download/) and activate it (https://shizuku.rikka.app/guide/setup/) before using Canta. Uses universal debloat list for badges. Please read the guide on how recommendations are chosen. Features No device bricking - though if you remove an important app and get stuck in bootloop after rebooting, you will still need to perform a factory reset No root required
F-DroidGitHubIzzyOnDroid