Productivity
1843 open source Productivity apps
Prediktor
APK
Features: Simple data entry: Type the (temperature / percentage / pH-level / other number) and just press "Add" to log the data now. If you want to log it at a different time, long press on "Add". Sophisticated prediction: Uses a MCMC ensamble sampler to extrapolate the data. This automatically handles errors in the data and provides the most likely prediction, including a 95% confidence interval. Saving data series: If your data series is long, you can save it under a name and come back to it at a later date.
F-DroidGitHub
PrepApp (F-Droid)
APK
PrepApp is a survival and emergency preparedness app designed especially for Brazil. It provides weather alerts from INMET, local maps, nearby locations, sea conditions, traffic information, and offline communication features to help users during crises and disasters.
F-DroidGitHub
Prepaid Balance
APK
This app keeps track of your prepaid balance. It can automatically record it and post a notification if your balance drops under a configurable threshold. It does so by parsing the response of a USSD code, that can be set in the settings.
F-DroidGitHub
Price Per Unit
APK
Compare unlimited items to find the best price! Save money in a smart way. Simply give a name (optional), enter in the cost, amount and size of each item and the unit per dollar will be calculated. This then sorts those based off best value for you to easily find the best price! Three numbers is all that is required to get an accurate answer. This app is ideal to find the best price in supermarkets but will work just in well at other stores that sell the same type of items for different prices or you can even compare prices from different stores. Features include: * No permissions! * No Ads! * 4 unit types (Weight, Volume, Length and Pieces) * Easily change the currency symbol * Summary of calculated unit/$ * Can view all items converted to one single unit * Remember data after the app is closed * Change rounding dp This app has no ads, requires no permissions, and collects no data.
F-DroidGitHub
Primary
APK
Primary is a slightly gamified educational application aimed at Primary (Elementary) school-aged children, but of course adults who wish to sharpen their skills will find it useful as well. There are levels dealing with basic math, sorting, clocks, spelling, plurals, etc., with new subjects planned for the future. See the website for a full list of subjects and features.
F-DroidGitHub
Print
APK
To use, either open a document using the Open toolbar icon, or share a file or text in another app and choose the Print app in the popup dialog that appears. In the toolbar you can… * Open a document using the file manager * Print the document, or write a pdf file * About show the app copyright and version Markdown markup in the text will be parsed and rendered by the commonmark markdown library. URLs in the text will be turned into links so they may be followed. Markdown tables and task lists are supported.
F-DroidGitHub
Prism
APK
Prism is a UnifiedPush distributor that uses Mozilla's push server for transport. It optionally pairs with a self-hosted Prism server, which can monitor your Proton Mail inbox and route notifications to Signal, Telegram or this app. The Prism server also accepts notifications from any source via a webhook API compatible with ntfy.
F-DroidGitHubIzzyOnDroid
Prism File Explorer
APK
Prism File Explorer is a modern, feature-rich, and lightweight file manager for Android, delivering a seamless file management experience with a beautiful Material Design interface.✨ Key FeaturesModern User InterfaceJetpack Compose UI: Fully declarative and responsive interfaceMaterial Design 3: Beautiful, consistent design languageDark/Light Theme: Automatic theme switchingSmooth Animations: Fluid transitions and interactionsComprehensive File ManagementComplete file operations: create, copy, move, rename, delete files and foldersMulti-select with intuitive gesturesClipboard operations with visual feedbackBatch operations on multiple filesDetailed information about files and directoriesAdvanced FeaturesMulti-tab interface: manage multiple directories simultaneouslyBreadcrumb navigation and quick access shortcutsSearch functionality: find files and folders quicklySorting options: by name, size, date, typeGrid and list view modesBuilt-in Media ViewersImage viewer: JPEG, PNG, GIF, WebP, and moreVideo player: MP4, AVI, MKV, MOV, and othersAudio player: MP3, WAV, FLAC, OGGPDF viewer: view PDF documents nativelyText editor: syntax highlighting for code filesArchive ManagementExtract and create ZIP archivesArchive preview: browse archive contents without extractionPerformance & EfficiencyLightweight and fast startupOptimized for smooth performance on low-end devicesBackground file operationsMemory efficient for large directories
GitHubIzzyOnDroid
Privacify
APK
Privacify is a privacy control center that monitors app permissions, tracks sensor access, and secures your device — all without sending data anywhere.CORE FEATURES:Privacy Dashboard — real-time privacy score with sensor usage overviewPermission Scanner — identifies apps with risky permission combinationsApp Monitoring — tracks camera, microphone, and location access across appsPermission Analytics — breakdowns by permission type and risk levelQuick Settings Tile — one-tap lockdown from the notification shadeHome Screen Widget — lockdown toggle with live status indicatorLockdown Mode — instant system-wide sensor deactivationADVANCED MODE (Root/Shizuku):Hardware Kill Switches — disable mic and camera at the system levelAppOps Control — fine-grained permission management per appAuto-Guard — automatically pauses kill switches when sensors are in useNo ads. No tracking. No network access required. All data stays on your device.
GitHubIzzyOnDroid
Privacium
APK
An open-source app built to guide you through the world of digital privacy.Discover privacy-respecting software and services, all based on the standard criteria of privacyguides.org.Features:No ads, no tracking, no permissions requested.Full RTL support.Clean and modern UI.Dynamic theming support.
GitHubIzzyOnDroid
Privacy Cell
APK
Privacy Cell is a small app that displays the cell phone protocol information. At the time of this writing, many cell phone networks are switching from 4G (4th Generation) to 5G networks. The 5G network protocols were specifically designed to protect against some of the known insecurities of the older protocols, including those that allowed stingrays (IMSI catchers) to perform man-in-the-middle attacks on cell phone networks. To ease deployment and backwards compatibility, 4G and 5G networks can run together in what is known as 5G NR (New Radio) NSA (Non-Standalone) mode. This uses the 4G network for the control channel and the 5G network for the data communication. However, 5G NR NSA does not provide protection against stingrays. Android has access to all the information it needs to know if it is connected to a 5G NR NSA or a 5G NR SA (Standalone) network, but it doesn’t display that information to the user. The purpose of Privacy Cell is to make that information easy to access. Privacy Cell can also warn you when you are connected to antiquated 2G and 3G networks.
DirectF-Droid
Privacy Flip
APK
Privacy Flip automatically manages your device's privacy features based on screen lock/unlock state. When you lock your device, it can disable Wi-Fi, Bluetooth, mobile data, location services, NFC, and even camera/microphone sensors. When you unlock, it intelligently restores the features you want back on. Works with Root OR Shizuku - Choose your preferred privilege method! Features: • Manage your device privacy based on lock/unlock state • Dual privilege support: Root OR Shizuku (no root required!) • Automatic privilege detection (Sui > Root > Shizuku) • Configurable feature control (Wi-Fi, Bluetooth, Mobile Data, Location, NFC, Camera, Microphone, Airplane Mode, Battery Saver) • Customizable timing delays (0-60 seconds granular, 2 minutes, or 5 minutes) • Smart "only if unused/not connected" modes for WiFi, Bluetooth, Location • App exemption system (skip privacy for specific foreground apps) • Samsung NFC payment override detection with opt-in auto-retry • Optional Accessibility Service for side button instant-lock support • Advanced multi-tier Bluetooth connection detection • Background service for persistent monitoring • Quick Settings tile integration Privacy Features Controlled: • Wi-Fi - Disable/enable wireless connectivity • Bluetooth - Control Bluetooth radio • Mobile data - Manage cellular data connection • Location services - Control GPS and location tracking • NFC - Control NFC sensor • Camera - Disable/enable camera sensor privacy (Android 12+) • Microphone - Disable/enable microphone sensor privacy (Android 12+) • Airplane Mode - Enable on lock (opt-in, disables all radios at once) • Battery Saver - Enable on lock (opt-in, reduces background activity) Note: Camera and microphone ignore custom delays and trigger immediately (if not in use to avoid interrupting calls), due to Android limitations Requirements: • Android 7.0+ (API level 24) • Android 12+ (API level 31) for camera/microphone features Choose your privilege method: Option 1: Shizuku (No root required!) • Shizuku app installed and running • ADB privileges via USB or wireless debugging • Perfect for non-rooted devices Option 2: Root Access (Recommended for rooted devices) • Root access via Magisk, SuperSU, or similar • Best performance with UID 0 privileges Option 3: Dhizuku (Device Owner method) • Device set as Device Owner or Profile Owner • No root required, no ADB after setup • Persistent privileges across reboots • Perfect for enterprise/privacy-focused setups Option 4: Sui (Best of both worlds) • Rooted device with Magisk • Sui Magisk module installed • Best user experience - automatic startup, no prompts Privacy & Security: • Zero telemetry - No data sent to external servers • Local storage only - All settings stored on device • No network permissions - App cannot access internet • Open source - https://github.com/dorumrr/privacyFlip
F-DroidGitHubIzzyOnDroid
Privacy Guides Verified Apps
APK
Verified Apps is an app signing certificate hash viewer and verifier. It checks your installed apps (or any APK file) against a built-in database of known-good app signing fingerprints.IMPORTANT: We maintain and release this app and our dataset in good faith and on a best-effort basis. We are not committing to perfect security, immediate bug fixes, or comprehensive app coverage in our dataset. As always with security tools like this, you must consider your own threat model and plan accordingly. We cannot advise you personally on the appropriate security measures for your specific situation. Your use of this app is at your own risk, and you may not hold any contributors liable for any adverse events which may occur.README: https://github.com/privacyguides/verified-apps-android/blob/main/README.mdMAINTAINER: https://www.privacyguides.org/You can share or copy verification info for use outside the app. If an app is not in the database, you'll have the option to open a pre-filled GitHub submission issue in your browser.What is this?This is a fork of AppVerifier (https://github.com/soupslurpr/AppVerifier), but many components have been removed, so it no longer serves the same purpose. Notably, it no longer includes peer-to-peer verification via clipboard sharing. This app only checks apps against our crowdsourced database.App verifications & reliabilityPlease note that mismatch results may not always indicate an illegitimate app. For example, if we only have the F-Droid version of an app in our database, and you downloaded the app from Google Play where Google signed it with their own certificate, then your app would not match our database and will be flagged.When you find a mismatch, we always recommend submitting that app information to our issue tracker, you will be prompted to do so within the app. We will work to verify the legitimacy of your submission. If the app you have is indeed legitimate, we will include it in the next app release. If the app you have is illegitimate, we will inform you in the submitted issue.What this app is good forContributing to Privacy Guides' crowdsourced database (https://github.com/privacyguides/verified-apps/) of developer signing certificates.If an app on your device is listed as unknown or a mismatch in this app, you will be shown a button to make a submission to our issue tracker, and it will automatically fill out the submission form to make the process as easy as possible for you. You will still need an account with our issue tracker to make a submission.Comparing your installed apps to Privacy Guides' database without needing to trust any additional parties/developers.We include our entire database locally in this app, which is built and signed by us. We therefore control the entire pipeline end-to-end, and once downloaded your local data can never be modified without updating the app to a new build.What this app is not good forComparing your apps to anyone's hashes besides our crowdsourced database.We've removed all clipboard/user-based verification tools, as many other apps already provide this functionality well, and we do not want to maintain parallel features unnecessarily.
GitHubIzzyOnDroid
Privacy Helper
APK
A simple Android app to help users understand the risks of giving apps dangerous permissions. What Privacy Helper brings is a simple, easy-to-use educational app with that leverages the mobile platform to inform and demonstrate effectively and interactively. Features: * Simple privacy quiz to test the user's privacy knowledge * Guide on data privacy, and the problem with Android * Guides on disabling permissions, unused apps, and other mitigations * Simple map demonstration of location tracking * List of dangerous permissions used by popular Android applications * Guide on Open Source app alternatives * List of alternative resources to help the user increase their knowledge * Sharing with popular platforms including Facebook, Twitter, and more
F-Droid
Privacy Indicators
APK
Privacy Indicator will bring the above Recording Indicators feature of iOS 14 to Android (With more extra features and Customizations). It notifies you every time an app or a service uses your device’s camera or microphone. Get Notified every time any third-party app is accessing your Camera. Get Notified every time any app is accessing your Microphone. You can customize indicator color and its position Option to enable Haptic feedback when indicators appear You can turn off any individual features in required More to come. Note that for ''Privacy Indicator'' to work, you will need to enable its service from the Accessibility Settings. The Service then keeps running in the background and automatically starts even if you restart the mobile.
F-DroidGitHub
PrivacyScanner
APK
PrivacyScanner scans installed applications for potentially risky permissions, and helps you review their privacy-related details. The goal is to give users better visibility into what apps are installed on their device.✅ 100% Free✅ No ads✅ No trackers
F-DroidGitHubIzzyOnDroid
PrivacyStats
APK
PrivacyStats checks your Android device’s privacy level based on installed packages.PrivacyStats has 3 built in lists of apps, ranging from apps with 1-2 trackers, to apps with 5-6 trackers. It will scan apps against these lists, and show you the apps, with uninstall buttons for user-apps, and disable buttons for system apps.It does not use an internet connection at all, and only has the permission: QUERY_ALL_PACKAGES.
GitHubIzzyOnDroid
Private DNS QS (no launcher)
APK
This version of the app doesn't provide a launcher icon in your home screen. To access the app's settings, you need to first add it to your quick settings, then long press the tile.Configure your preferred DNS modes to toggle in app and toggle your Private DNS mode from your quick settings panel.In order to change the Private DNS setting, this app requires the WRITE_SECURE_SETTINGS permission.This permission can only be granted either by Shizuku or in an ADB shell.ShizukuStart Shizuku, then open this app, and the permission should be granted automatically.ADBUse the command: adb shell pm grant com.flashsphere.privatednsqs.nolauncher android.permission.WRITE_SECURE_SETTINGSCheck out private-dns-qs.web.app/help on the steps to use adb to grant the permission.If you prefer a launcher icon on your home screen, check out the app version here.
GitHubIzzyOnDroid
Private DNS Quick Setting
APK
Configure your preferred DNS modes to toggle in app and toggle your Private DNS mode from your quick settings panel.In order to change the Private DNS setting, this app requires the WRITE_SECURE_SETTINGS permission.This permission can only be granted either by Shizuku or in an ADB shell.ShizukuStart Shizuku, then open this app, and the permission should be granted automatically.ADBUse the command: adb shell pm grant com.flashsphere.privatednsqs android.permission.WRITE_SECURE_SETTINGSCheck out private-dns-qs.web.app/help on the steps to use adb to grant the permission.If you prefer not to have a launcher icon on your home screen, check out the no-launcher version.
GitHubIzzyOnDroid
Private DNS Quick Tile
APK
Adds a Private DNS quick tile to the Android Quick Settings. In order to change the Private DNS settings, this app requires the WRITE_SECURE_SETTINGS permission. This permission can only be granted in an ADB shell with the command "pm grant com.jpwolfso.privdnsqt android.permission.WRITE_SECURE_SETTINGS"
F-DroidGitHub
Private Lock
APK
A simple app to automatically lock your phone based on movement force, or the acceleration to be more accurate. Private Lock can help protect your privacy and security by monitoring the accelerometer in the background and if the threshold is breached, lock the screen. The main use cases are if your phone is taken while you're using it, or you drop your phone. As an additional bonus, it can also help save wear and tear on your power button! Inspired by the abandoned [https://github.com/0xFireball/PluckLockEx PluckLockEx] project, which is based on [https://github.com/SyntaxBlitz/PluckLock PluckLock].
F-DroidGitHub
Pro Expense - Daily Finance Tracker
APK
Key Features: Offline Storage Records are stored in local device storage. Statistics Weekly expenses are presented as simple Graph. Category Statistics Multi-Language support
F-DroidGitHub
Process Hook
APK
Process Hook hooks into specific process/apps/games to spoof your device as different model/device to unlock hidden features and options. Check the list of supported apps.Features:Device spoofing for enhanced gaming experiences.Display refreshrate spoofing to unlock higher framerate options. ( To test this spoof install any app from the Debug Lists and check display specifications )Compatibility with a wide range of popular gaming applications.Easy installation and no extra configuration.
GitHubIzzyOnDroid
ProcrastiLearn
APK
ProcrastiLearn turns mindless app-opening into vocabulary practice. Choose which apps you tend to open out of habit — social media, browsers, games — and whenever you launch one, a full-screen flashcard overlay appears. Reveal the translation, rate how well you remembered it, and the app you wanted opens immediately. No subscription, no ads, no accounts. HOW IT WORKS Pick the apps you want to gate in the Apps tab. From that point on, opening any of those apps shows a flashcard first. You rate your answer (Again / Hard / Good / Easy) and the FSRS spaced-repetition algorithm schedules the next review automatically. Daily caps prevent you from being overwhelmed. If you tend to lose track of time once you're inside a gated app, the optional recurring reminder has you covered: set an interval (e.g. every 10 minutes) and the overlay reappears as long as you stay in that app, turning each lingering session into extra review reps. VOCABULARY Add words manually or use the optional AI translation feature: paste a word, tap Generate, and the app drafts a translation using OpenAI. The AI prompt is fully editable so you can control tone, context, or target language. You can also import existing Anki decks (.apkg files) to get started immediately with a vocabulary set you already trust. LANGUAGE SUPPORT The app currently works best with English-Russian vocabulary (that pair is the default in the AI prompt), but any language pair works — just edit the prompt in Settings to match your target language. Support for additional language pairs with dedicated UI will be added in future releases, especially based on user requests in github issues or via email. PRIVACY All data — vocabulary, blocked apps list, review history, and settings — is stored entirely on your device. There are no analytics, no crash reporters, and no advertising SDKs. The only outbound network traffic is the optional OpenAI API call you initiate by tapping Generate, using your own API key entered in Settings. PERMISSIONS Accessibility Service: used solely to detect which app is currently in the foreground so ProcrastiLearn knows when to show the overlay. The service does not read screen content, keystrokes, or any other input. Display Over Other Apps: required to draw the flashcard overlay on top of the gated app. OPEN SOURCE ProcrastiLearn is free and open-source software (Apache 2.0 license). Source code and issue tracker are on GitHub.
F-DroidGitHub