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A free reader app for Archive of Our Own (AO3). Built because other AO3 apps charge money for features that should be free. Features: Custom library with favorites Category management and organization Reading history with filters Native AMOLED support Offline reading No subscriptions, no ads, ever.

CPU Info provide main information about hardware and software of your device: - CPU specification (with current frequency on specific cores) - GPU specification - RAM and storage state (internal, external and SD card) - Display metrics - Android OS details - Sensors data - Battery status - WiFi and Bluetooth mac address (on older Androids) - Audio card info - Native libraries used in another applications - CPU and battery temperature monitor - Installed applications - Running processes (on older Androids) All issues and ideas can be posted on Github.

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

This is an Ant+ to BLE (Bluetooth Low Energy) Bridging app for ANT+ Cycling Speed and Cadence (CSC) sensors and ANT+ heart rate sensors. The app will act as a Cycling speed/cadence and/or HR BLE sensor so other BLE device (phone, PC, Mac, tablet) can reads data from ANT+ sensors.This is an Android app which reads ANT+ cycling speed/cadence (CSC) and/or heart rate sensors in the background (actually in an Android foreground service), and advertises itself as a Bluetooth Low Energy (BLE) device which implements Cycling Speed and Cadence Profile (CSCP) and Heart Rate Profile (HRP) so that other devices can see this Android device as a Cycling Speed and Cadence Bluetooth and/or Heart Rate BLE sensor.This is useful when you only have ANT+ CSC/HR sensors but you want to connect to them as BLE sensors (provided that you don't have an USB ANT+ stick around but happen to have an ANT+ enabled Android device like a Samsung phone).Long hold on the sensors name on top of the screen to rescan for Ant+ devices after the "Start BLE bridging" button has been pressed. All sensors will automatically scan for Ant+ sources when the "Start BLE bridging" button is pressed.

CSV Editor is a simple, lightweight app for viewing and editing CSV (comma-separated values) files on your Android device. Features: • Open CSV files from your device storage • Create new CSV files from scratch • Edit individual cells in a spreadsheet-like view • Add and delete rows and columns • Save edited files back to storage • Horizontal and vertical scrolling for large files • Pinch to zoom for better viewing • Keyboard-aware scrolling keeps your active cell visible CSV Editor is free and open source software with no ads or tracking.

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.

This app provides a Print Service to Android. This means that once it's installed, you need to enable it in the 'Print' section of the settings app. Once the service is enabled, printers are automatically discovered using the mDNS protocol. You can print anything you want from any app, as long as the print service is enabled. Of course, printing document is an important matter. Because your documents are your most private information, you don't want anybody to have access to this information. This is why this app is completely open sourced and free to use, modify and redistribute.

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.

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.

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.

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]

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.

Caffeine Health is a beautifully designed Android app that helps you understand how your caffeine intake affects your body throughout the day — and whether that late-afternoon espresso might cost you sleep tonight. Log drinks from a curated catalog, watch your active caffeine level in real time on a 24-hour curve, and get a personalized sleep forecast based on your unique metabolism. Features: • Real-time 24-hour caffeine curve with emoji drink markers • Personalized pharmacokinetic modeling based on age, weight, lifestyle • Sleep forecast — see if caffeine will affect your bedtime • Curated drink catalog: coffee, tea, energy drinks, soda • Drink detail sheets showing individual contribution curves • Quick actions — edit, duplicate, or delete entries • Material 3 Expressive design with dynamic color • Montserrat typography and haptic feedback throughout • Full dark mode support Privacy: • Fully offline — all data stays on your device • No ads, no tracking, no analytics, no accounts • Open source (GPL-3.0) Science: The app uses a one-compartment oral pharmacokinetic model with personalized half-life calculation. Your caffeine metabolism is estimated from age, weight, smoking status, alcohol intake, and CYP1A2-inhibiting medications — grounded in real pharmacology.

CajuScan is a mobile Android application, developed in Flutter, that simplifies expense recording in Portugal. The app allows you to scan the QR Code (ATCUD) present on Portuguese invoices, automatically extract transaction data, and send it to the financial management app Cashew. The goal is to automate the manual process of entering expenses, saving time and reducing errors. Features: - Scan ATCUD QR Codes from Portuguese invoices - Automatic data extraction (amount, date, vendor, etc.) - Integration with the Cashew app for financial tracking - Simple, usability-focused interface Developed with privacy in mind: no tracking, no ads, no data sent to external servers. Open source under MIT license — contributions are welcome!

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)

Calendar Sync automatically copies events from one local calendar to another on your device. When an event appears in your source calendar, a corresponding event is created in your target calendar using a name you choose. Perfect for sharing availability across personal and work calendars, or keeping multiple calendars in sync without manual entry. Features: - Select any local device calendar as source or target - Customize the synced event name (e.g., "Busy") - Original event title is preserved in the description - Sync runs automatically in the background at your chosen interval - Changes to already-synced events are detected and propagated - Deletions in the source calendar are mirrored to the target No account required. All data stays on your device.

⚠️ Note: This app is designed specifically for Simplified Chinese environment and only supports Chinese time expression parsing. Automatically create calendar events from notifications received from work and social apps by parsing Chinese time expressions. Features: • Automatically recognizes Chinese time expressions in notifications (e.g., "明天下午3点" = tomorrow 3pm, "周五晚上8点" = Friday 8pm) • Supports rich Chinese relative time parsing ("3天后" = in 3 days, "1个半小时后" = in 1.5 hours) • Supports fuzzy time expressions ("今晚" = tonight, "下午" = afternoon, "周末" = weekend) • Customizable keyword filters and app whitelist • Multiple calendar selection support • Fully offline, no internet permission required • Privacy-respecting, data never leaves your device Use Cases (Chinese social/work apps): • WeChat/QQ group notifications: "明天下午3点开会" (meeting tomorrow 3pm) • Work notifications: "周五晚上8点项目汇报" (project report Friday 8pm) • Social plans: "下周二一起吃饭" (dinner together next Tuesday) Permissions: • Calendar access: Read and create calendar events • Notification access: Read system notifications to extract time information • Foreground service: Keep service running in background • Exact alarm: Used for crash recovery mechanism • Query packages: Used for app picker to display installed apps This app contains no ads, tracking, or data collection. Target audience: Chinese-speaking users who use Chinese messaging and social apps. Note: Github Release version uses private signing, although both are built automatically by Actions, the signatures of the two packages are different.

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.

A simple mental calculation trainer with this features: - contains the four elementary arithmetic operations and the prime factorization - configurable task types and diffculty - configurable number input field - statistic about the performance - multi user support - time trial mode (solve as many tasks as possible within a defined time) with tasks depending on the wall clock time so that one can play "against" another one with the same tasks

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.

Calculator Hide File App is an open-source Android application that combines a functional calculator interface with a secure private file storage feature. It allows users to store and manage personal files such as images, videos, documents, and notes, protected by a passcode.Key Features:Dual Functionality: A fully working calculator alongside a private file storage area accessible via passcode.Passcode Protection: Access your private files securely using a user-defined code.Secure File Manager: Add, remove, and organize files within a protected local environment.Local Storage: All files are stored on-device, ensuring user control and privacy.Lightweight & Fast: Designed to run smoothly across a wide range of Android devices.No Root Required: Works on standard Android devices without requiring root access.File Encryption: Protect stored data using encryption mechanisms.How It Works:Calculator Mode: Use the app as a standard calculator for everyday calculations.Access Private Storage: Enter your passcode to open the secure file storage area.Manage Files: Import, organize, and remove files within the app. Data remains protected locally on your device.Requirements:Android 6.0 or higherStorage permissions enabled“Manage All Files” permission may be required on Android 11+ for full file access functionalityTechnologies Used: Kotlin, XML, Android SDK, MediaStore API, and secure local storage techniquesOpen Source: This project is fully open-source, allowing users to inspect the code and verify how data is handled.Privacy Focus: The app operates entirely offline and does not collect or share user data.

Every calculation you make is your business — not Big Tech's. Calculator M3 is a beautifully designed calculator built with Material 3 that works entirely offline for everyday math, with zero data collection, zero analytics, and zero tracking. Unlike other calculators, this app doesn't phone home. No usage tracking, no telemetry, no ad frameworks buried in the code. It does math — and an optional, fully on-device AI math solver — and nothing else. ✓ Full expression evaluation ✓ Live result preview ✓ Scientific functions ✓ Calculation history ✓ Material 3 dynamic theming ✓ Works offline (with an optional on-device AI math solver) 🔢 FULL EXPRESSION EVALUATION Type complete mathematical expressions with proper operator precedence (PEMDAS) and parentheses up to 20 levels deep. See the result update in real-time as you type. - Full PEMDAS operator precedence - Parentheses with 20 levels of nesting - Live result preview as you type - Tap anywhere in the expression to edit - High-precision BigDecimal arithmetic - Engineering notation for large numbers 🔬 SCIENTIFIC FUNCTIONS - Square root (√) - Pi (π) constant - Power (^) exponentiation - Factorial (!) for values 0-99 - Percent (%) with consumer-style support - Implicit multiplication (2π, 3√2, etc.) 📜 CALCULATION HISTORY - Stores up to 100 recent calculations - Persists across app restarts - Tap entries to reload them - Clear history when needed 📷 AI MATH SOLVER (OPTIONAL, EXPERIMENTAL) An experimental extra for higher-RAM devices: photograph a handwritten math expression and let an on-device AI model read and solve it — entirely on your device, with nothing sent to any server. ➡️ HOW TO TURN IT ON: the AI features are hidden until you unlock them. In the calculator, tap the "AC" (all-clear) button 7 times in quick succession — a countdown guides the final taps. A camera icon then appears in the top-left corner, and the unlock is remembered. - Needs a 6 GB+ device and a one-time vision-model download (2.6–4.9 GB) - Take a photo with your system camera, or pick one from your gallery - Choose from several open vision models (Gemma 4, Gemma 3n) - Models run fully on-device, GPU-accelerated where supported - The solution is shown with cleanly formatted math — fractions, roots, and exponents - Internet is used only once, to download the model you choose - No photo, calculation, or usage data ever leaves your device 🎨 MATERIAL 3 DESIGN - Material You dynamic colors (Android 12+) - Automatic light and dark mode - Smooth button press animations - Haptic feedback - Adaptive layout for portrait, landscape, and foldable devices - Auto-sizing display for long expressions 🛡️ PRIVACY & OPEN SOURCE - 100% open source (GPL v3) - No tracking, analytics, or ads - No data collection of any kind - The calculator itself needs no network at all - Internet is used only if you opt in to download an AI model — never to send your data - Your calculations and photos stay on your device, period 📱 WORKS ON ALL DEVICES - Phones in portrait and landscape - Foldable devices (Pixel Fold, Galaxy Z Fold) - Tablets - Responsive button sizing and layout

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.

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❤️.