Productivity

1843 open source Productivity apps

V
VCAM
APK
VirtualCamera allows you to to create a virtual camera interface on your phone and attach it to different apps. It requires the Xposed framework to be present on your device.The module allows you to use a video file on your device, and have apps believe it is a camera. The app can then „take photos“ or „record videos“ from that input.
GitHubIzzyOnDroid
VPN Inspector
APK
VPN Inspector is an advanced diagnostic utility designed to audit your system network interfaces and routing for bypass tools. It helps you verify the resilience of your VPN, Proxy, or DNS-routing setup against standard inspection techniques.Features include:GeoIP Regional Check: Compares your IP location details on the server side to detect anomalies.IPv6 Leak audit: Highlights if IPv6 is bypassing the VPN tunnel directly.System VPN API status: Queries Android's active VpnService flag.System Proxy audit: Checks system-level HTTP/Socks proxy property leaks.Package inspection: Scans for globally accessible or installed client-side bypass apps.Interface & Routing audit: Identifies virtual network tunnels (tun, tap, wg, ppp).MTU frame examination: Detects telltale signs of extra protocol headers indicating encapsulation.Local proxy checks: Detects background services listening on standard local proxy ports.DNS Fake-IP inspection: Evaluates potential DNS interception and spoofing attempts.Network Latencies (SNITCH): Measures relative TCP RTT ping anomalies between national and international nodes.Perfect for privacy professionals, developers, and security enthusiasts seeking a complete diagnostic toolkit.
GitHubIzzyOnDroid
Valentin's PowerTools #003 - Gesture Drawing Pract
APK
This is Gesture Drawing Practice, an open source app for artists. It displays your selected pictures from the gallery, each for a set amount of time (like 1 minute). There are options to display a countdown timer and duration of pause (blank screen) between pictures Features * 🤖 select multiple pictures, order is preserved (!) * ⏲️ choose from 4 different usual time options for practice * 😴 choose from 4 different useful pause options * 🎨 options for visibility and appearance of the count down timer Usage * Tap the big red button * Select your pictures from the gallery * Change settings or leave it as it is * Tap "Start Session" Created with ❤️ by Valentin Tags: gesture drawing, practice, slide show, timer, countdown timer, artist, comic book, illustrator, drawing, draw, persons, line-of-action
F-DroidGitHubIzzyOnDroid
Valentin's PowerTools #018 - Volume Percent Calcul
APK
VPT#018-VPC is an android app that swiftly calculates the mass of alcohol (in grams) contained in a given volume of a beverage (in milliliters) when alcohol content (Vol.-% or v/v) is known. It uses the formula: mass (g) = volume (mL) * Vol-%/100 * specific weight of alcohol (0.793 g/mL) Features: * 🖩 Calculate mass, or volume, or content (v/v) of an alcoholic beverage by entering the 2 other data points. * 🎨 Intuitive Interface - Clear buttons and layout, simple to understand. * 🔄 Dynamic Field Adjustments - Modify any data field post-calculation, and the app will update the other relevant fields (right now function via pressing "Calculate" again after modifying fields). * 🚨 Plausibility Warnings - The screen will flash red if any of the values are totally out of place, such as above 100% alcohol content or volumes above 10 liters, informing the user that something probably went wrong. Calculation still finishes. * Localization - Right now: English, German Usage: 1. Enter your data in any 2 of the 3 fields 2. Tap "Calculate" 3. View your results 4. To clear all 3 fields, tap the "clear" Button. 🚨DISCLAIMER🚨: This is NOT a medical application NOR a medical product. This is just a calculator. Correct results are not guaranteed. User is responsible for checking results and plausibility. Created with ❤️ by Valentin. Tags: calculator, alcoholic solution, volume percent, v/v, Volumenprozent, Volumenprozentrechner, Alkoholgehalt, alcohol content, mass of alcohol (grams), specific weigth, spezifisches Gewicht, Normalbedingungen.
F-DroidGitHubIzzyOnDroid
Valet
APK
Valet is a fork of the original SBW wallet, modified to support synthetic "stable sats" based on hosted channels. You can read more about stable sats on standardsats.github.io. In addition to this feature, the wallet retains all the original capabilities of SBW, including: Non-custodial Bitcoin storage A fully-featured Lightning node within your mobile device
F-DroidGitHub
Vanced microG
APK
microG GmsCore is a FLOSS (Free/Libre Open Source Software) framework to allow applications designed for Google Play Services to run on systems, where Play Services is not available.This fork tweaks MicroG to be usable by applications that require Google authentication such as Vanced.Notable changes:No longer a system appPackage name changed from com.google.android.gms to com.mgoogle.android.gms to support installation alongside the official MicroGRemoved unnecessary featuresRemoved all permissions, as none are required for Google authenticationNote: microG (and so this fork of it) provides FOSS replacements for proprietary libraries in order to make apps which depend on such work. So a scanner will find the names used by those original, proprietary libraries as if they were there (which is how the apps needing them find them). Still the app won't be marked with the corresponding AntiFeatures, as those would apply to the original libraries only. NonFreeNet is still applied for Google authentication. Tracking is not, as Firebase Analytics here is just a stub (an „empty shell“ without functionality).
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Vanilla
APK
Vanilla is a cute an elegant calculator app for Android!
F-DroidGitHubIzzyOnDroid
Vape Tools
APK
Key Features: - Coil Calculator: Easily calculate the optimal resistance for your coils. Choose your wire type, gauge, and number of wraps to get precise results tailored to your vaping style. - E-Liquid Mixer: Create your own custom e-liquids with precision. Input your desired nicotine strength, VG/PG ratio, and flavor percentages, and Vape Tools will generate the exact recipe you need. - Saved Liquids: Keep track of your e-liquid creations with the Saved Liquids feature. Save your recipes and monitor their steeping time for the perfect vape every time. - Ohm’s Law Calculator: Ensure your builds are safe and efficient with the integrated Ohm’s Law calculator. Input your voltage, resistance, or current to get accurate results in seconds. - No Data Collection: Vape Tools respects your privacy.
F-DroidGitHub
Vaporizer Control Crafty
APK
Control your vaporizer ( currently only crafty ) with this app.
F-DroidGitHub
Varengold activeTAN
APK
activeTAN is the secure and modern TAN process for your online banking. With the activeTAN app you can approve transactions comfortably on your smartphone. The fast data transfer via QR code enables an easy two-factor authentication that works everywhere at all times.
F-DroidGitHub
Vehicle Motion Cues
APK
Motion Cues reduces motion sickness by drawing drifting dots over other apps while you ride in a car, bus, or train.
F-DroidGitHub
Veil - Privacy focused wallet
APK
Veil - Privacy without compromise Veil is creating an encrypted equivalent of the cash economy, where privacy is the most convenient choice. Learn more, download the wallet, and join the journey. PRIVACY BY DEFAULT Privacy should not be optional. Veil aims to make full-time privacy the most convenient choice. INCENTIVIZED PARTICIPATION By holding Veil, our users not only contribute to broadly distributed network security, but earn staking rewards — anonymously! FAIR LAUNCH No ICO. No premine. Veil's blockchain is secured via Proof-of-Work and Proof-of-Stake in order to combine both security and fair distribution. USER-FOCUSED In a digital cash society, participation extends to everybody, not just those who read user manuals. Veil aims to be one of the most user-friendly wallets in crypto. SELF-SUSTAINING The Veil network includes built-in self-funding for project development, operations, customer support, and ongoing research and development. FUTURE-SAFE Veil will continue to push the limits of cryptography and blockchain technology through Veil Labs, an entity dedicated to R&D and partnerships with leading academic institutions. Project website: https://veil-project.com Source code: https://github.com/steel97/veil_wallet Discord https://discord.veil-project.com
F-DroidGitHub
V
Ventoid
APK
Ventoid is an Android utility for preparing Ventoy-style USB drives directly from a phone. It is built for users who want a clean, open-source path to writing a multi-ISO boot USB without using a desktop app for every change. What Ventoid does: - Detects supported USB mass-storage devices connected over OTG - Requests Android USB permission only when needed - Writes a Ventoy-compatible MBR layout - Writes the Ventoy boot core and EFI image - Formats the main data partition as exFAT - Shows a clear install progress view and local write log Why it is useful: - No root required - No ads - No account - No analytics - No cloud dependency Important: - Ventoid writes directly to the selected USB drive, so choosing the correct target device matters - A working OTG adapter or powered hub is required for actual USB writing - Device compatibility can vary depending on the phone, cable, USB bridge, and flash drive controller Ventoid is intended for advanced users, repair kits, travel setups, and people who want a portable boot-media workflow from Android.
F-DroidGitHub
Verifit
APK
Verifit is a simple minimalist fitness tracker that I made mainly for myself. The UI is heavily inspired by FitNotes. It’s purpose is to replace the traditional paper and pencil method for tracking progressive overload. Since I made this with the primary user in mind being myself, it is not fully featured yet, but I do have future plans for adding extra features over time. This is my first attempt so suggestions and code improvements are always welcome.Features:Exercise trackingCreate custom exercisesEdit, delete exercisesEasily import & export in csv formatBasic analysis of workout dataVisualization of workout dataVolume, actual 1RM, estimated 1RM, and other stats trackingIncludes simple rest timer
GitHubIzzyOnDroid
VerveDo
APK
VerveDo is a concise to-do app that follows Material 3 Expressive. You can use it to keep track of your daily school homeworks or as a memo for everyday life. You can set priorities to each task and sort them, helping you stay organized and in control of your life.
F-DroidGitHub
Vibrato
APK
F-Droid
Vibrator
APK
This is a very simple Android app for starting and stopping the system vibrator. Using this app it is possible to force your device to vibrate pretty much continuously. Why would you want this? Sometimes you want to deliberately use up your device battery - for example, during battery calibration. Vibrating continuously is a quick way to drain your battery. What else can you use this app for? The potential uses of this app are limitless. If you're sick of calibrating batteries, here are some other ideas: - Make music! Listen to the smoothing sounds of your Androids vibrating in harmony - Play pranks! Hide your vibrating device in the wardrobe and tell your partner there's a wasp in the house - Vibe check! Invite all your friends around and throughly vibe check them
F-DroidGitHub
Virtual Host
APK
Virtual Hosts app helping developers customized hosts(/system/etc/hosts) File on android devices(no root). support wildcard DNS records.For example: 127.0.0.1 a.com | 127.0.0.1 m.a.com | => 127.0.0.1 .a.com 127.0.0.1 w.m.a.com | Video Demo: https://www.youtube.com/watch?v=pHnsboAnm-A
F-DroidGitHub
VirtualSoftKeys
APK
Features: * As system navigation bar * No any extra permission * Support stylus (Samsung S-pen, ASUS Z stylus, etc.) This application use the "accessibility service" to call the system home, back and recent button.
F-DroidGitHub
Virtuosity
APK
Virtuosity helps you organize and track your music practice, allowing you to your reach musical goals faster. Organize Create routines of the exercises you wish to practice. Practice Stay focused while practicing with a built in timer. Measure View logs of your previous practice sessions, as well as detailed graphs showing your performance (BPM) over time. Offline, ad-free, and open source No advertisements, annoying notifications, intrusive permissions, or trackers in this app. Your data is yours. The complete source code is available under an open-source license (GPLv3).
F-DroidGitHub
Visor
APK
NOTE: This app is unmaintained since 1/2021, so there won't be updates anymore.Visor is a magnifying glass. Enlarge difficult to read text by 4 magnification levels and change contrast to 5 different viewing modes. Optionally, turn on the LED flash of your device to help you see better in low-light conditions.Visor zooms and improves the contrast of whatever you want to see. Its advanced color modes and simple interface are made for giving you the best possible perception of printed text on your screen like you’d expect it from a handheld electronic magnifier.
GitHubIzzyOnDroid
V
VocableTrainer
APK
Vocabulary and word trainer to memorize foreign languages and remember definitions * Flashcard like system * training progress based on correct and incorrect answers * multiple meanings per entry * dark mode support (android 8.1+) * training mode for entering one meaning * training mode for entering all meanings * training mode for writing down on real paper * import and export to spreadsheet CSV files with full utf-8 support Privacy: Internet access is used only for one OPT-IN survey and OPT-IN crash reporting.
F-DroidGitHub
Vocabulary Trainer
APK
Vocabulary Trainer implements the SuperMemo2 algorithm for long-term learning. You can try it out online. It lets you:Group vocables in boxesImport vocables from excelMultiple modes (typing, multiple-choice, letters)Practice mode using SM2 algorithmTranslated (English and German)
GitHubIzzyOnDroid
Voice Notify
APK
Announces status bar notification messages using Text-To-Speech (TTS), allowing you to know what a notification says without looking at the screen. * Customizable TTS message * Ignore specific apps or notifications containing defined text * Choice of TTS audio stream (see Google Play descriptions for more details) * Choice of speaking when screen or headset is on or off, or while silent/vibrate * Quiet Time * Shake-to-silence * Custom delay of TTS after notification For technical reasons, VN operates through Android's Accessibility service and must be enabled in the Accessibility settings. The Accessibility service will give a warning that VN may be able to collect personal data. This is because Accessibility doesn't know what or how data passing through it is used by enabled apps. VN only uses Accessibility to read notification text which is passed directly to TTS and temporary memory (for the notification log). The TTS service (outside the control of VN) may also print spoken text in the logcat.
F-DroidGitHub