Android

Audio Spectrum Analyzer was designed with accuracy and ease of use in mind. It can be used for monitoring or measuring environmental sound or noise; help tuning instruments; timing short sound events; and educational purpose. Features: * No Ads. * With log or linear frequency axis. * Can label frequency axis using music pitch note. * Support all possible sampling rates and almost all recorder sources of your device. * Graph with nice grid lines and labels, easy to operate. * FFT sample size range from 64 to 32768. Using half-overlapped (adjustable) time window to increase time resolution. * Various window functions provided, for different frequency resolution and dynamical range. * Peak frequency detection (in unit of Hz and note+cent), with a moderate accuracy (FFT + interpolation). * With dB or A-weighting dB (dBA). * Can record the audio in wav (PCM) format. * Pinch to zoom, drag or swipe to move, long-press to place cursor, double touch to reset zoom. Notes: May need some knowledge of discrete Fourier transform and spectrum analysis to use it well. The actual accuracy mainly depends on your device. No calibration interface provided.

AudioAnchor is an audio player that tracks the listening process of your audio books and podcasts. Features: AudioAnchor offers a clean and intuitive interface for listening to audio files while keeping track of the listening process. Additional features include: * lock screen media controls * sleep timer * export / import listening progress as sql database

A simple VU-style audio meter. You can choose from several formulas to allow the meter to work in low- and high-noise level enviromnents. I noticed there was no audio meter in F-Droid, so I thought I'd build one. The app offers a few ways to calculate the audio level to display: * dBFS: Decibels relative to Full Scale. * RMS: Root Mean Square. This is arguable the most correct, but it is a little insensitive at low volumes. * LogRMS: Natural log of RMS: My first attempt to even out the scale. It's a little too sensitive to noisy mics. * SqrtRMS: Squareroot of RMS: My second attempt to even out RMS: it seems to works best. * Max: Simply find the loudest bit of each sample. Most responsive, but will peg the scale on noisey places. * Avg: Simple average of the sound.

For use with your audiobookshelf server. Audiobookshelf is a free and open source audiobook and podcast manager.Connect to your self-hosted audiobookshelf server and stream your audiobooks and podcasts directly to your device.

Audire identifies the music playing near you and shows you the details. The app also saves a history of songs it identified for you in the past, so you can look up all songs later at your convenience as well.For identification, Audire uses the APIs of Shazam and AUDD.

- Search books by title, author, and other parameters - See detailed info about the book (pages, size, etc) - Switch between light and dark theme - Dark mode/light mode - and many more... Check out the all of my apps: https://funkymuse.dev GitHub: https://github.com/FunkyMuse

Aurora Store is an unofficial, FOSS client to Google Play with an elegant design. Aurora Store allows users to download, update, and search for apps like the Play Store. It works perfectly fine with or without Google Play Services or microG. Features: • FOSS: Has GPLv3 licence • Beautiful design: Built upon latest Material 3 guidelines • Account login: You can login with either personal or an anonymous account • Device & Locale spoofing: Change your device and/or locale to access geo locked apps • Exodus Privacy integration: Instantly see trackers in app • Plexus integration: Instantly see app compatibility without Google Play Services or with microG • Updates blacklisting: Ignore updates for specific apps

Aurora Store Nightly is the test version of an unofficial FOSS client for Google Play with bare minimum features. Aurora Store allows users to download, update, and search for apps like the Play Store. It works perfectly fine with or without Google Play Services or microG.

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Turning a mobile phone into a One Time Password (OTP) generation device which can be used in the place of hardware tokens. Support for provisioning tokens using the KeyUriFormat and QR codes as well as manual creation. Can optionally be protected with a PIN to stop unauthorised access to the software tokens. Supports both HOTP (Event Tokens) and TOTP (Time Tokens) specifications.

Easily and securely keep track of all your Passwords! AuthPass is a stand alone password manager with support for the popular Keepass (kdbx) format. Store your passwords, share across all your devices and easily find them whenever you need to login.

Authnkey is a credential provider that lets you use FIDO2 security keys (like YubiKey, SoloKey, Nitrokey, or Token2) for passkey authentication on Android. Android's built-in WebAuthn support has a significant gap: it does not support CTAP2 over NFC. This means you cannot use PIN-protected passkeys or discoverable credentials with NFC security keys — you're limited to basic U2F tap-to-authenticate. Authnkey fills this gap by implementing the full CTAP2 protocol. The app registers as a credential provider, so any app or browser that supports the Android Credential Manager API will offer Authnkey as an option when passkeys are requested. This also works on devices without Google Play Services, since Authnkey implements the CTAP2 protocol directly rather than relying on Google's FIDO2 API. Supported features: - Passkey creation and authentication - PIN verification - Discoverable credentials - Multiple accounts per site - NFC and USB transports No root required.

The idea behind Authorizer is, to use old smartphones as a hardware password manager only. To avoid manual typing of long and complex passwords everytime you need them, Authorizer pretends to be an USB keyboard (e.g. over an USB On-The-Go adapter). With a button press inside the App, it will automatically enters the password for you on your pc, laptop, tablet or main smartphone.

Auto Auto-Rotate is an extremely simple app that stores Android's auto-rotate setting per app. Do you usually disable auto-rotate and enabled it only for some apps? Like your gallery, or your video app? Do you tend to forget to turn it off afterwards? Does it bother you? Then Auto Auto-Rotate is the perfect app for you! Auto Auto-Rotate is open source and released under the GPLv3 license[1]. Check out the code if you like[2]. Required Android Permissions ▸ WRITE_SETTINGS to turn Android's auto-rotate on and off. ▸ BIND_ACCESSIBILITY_SERVICE to detect app launches. ▸ REQUEST_IGNORE_BATTERY_OPTIMIZATIONS to make sure it keeps running in the background. ▸ RECEIVE_BOOT_COMPLETED to automatically startup on boot if activated. ▸ PACKAGE_USAGE_STATS to get the currently running app. Get it You can download it for free in F-Droid[3] Translations Translations are always welcome! :) The app is available for translation as two projects on Transifex[4] [1] https://www.gnu.org/licenses/gpl-3.0.en.html [2] https://gitlab.com/juanitobananas/auto-auto-rotate [3] https://f-droid.org/packages/com.jarsilio.android.autoautorotate/ [4] https://www.transifex.com/juanitobananas/auto-auto-rotate and https://www.transifex.com/juanitobananas/libcommon

Auto Light: Precision Brightness ControlAuto Light is a specialized replacement for the standard Android adaptive brightness feature. Designed for users who demand absolute control, this app provides a custom-tailored brightness curve based on your specific environment.This is a power-user tool that may require additionally manual configuration to function effectively.For a proper function, it requires to disable the built-in Android Adaptive Brightness feature manually before using Auto Light app.How It WorksThe app utilizes a four-point non-linear mapping model to create a smooth brightness curve. If the predefined settings do not meet your requirements, it allows you to set intermediate points for four distinct ambient light levels and their corresponding intensities. The app then calculates the optimal intermediate values to ensure a smooth, predictable transition.The main intended working mode is “On screen unlock/rotate” where the app captures ambient light data only during specific triggers (like unlocking or rotating). This sets your brightness once, preventing the “flickering” or “hunting” common with standard auto-brightness.The Auto Light app utilizes Android’s notification system to ensure stable background performance. Since the app does not send active alerts or messages, you may choose to disable notifications in your Android system settings without affecting core functionality. To do this within the app, tap the three dots in the top-right corner, go to Settings, and ensure Notifications is toggled off.Permissions & PrivacyTo provide reliable system control without compromising privacy, Auto Light uses:Modify System Settings: Necessary to adjust the display brightness levels.Notifications (Service Persistence): Used to maintain a Foreground Service, ensuring the Android system does not terminate the app while it's monitoring light levels.Run at Startup: Ensures your custom brightness profile is active immediately after a device reboot.User Present & Configuration Change: Used strictly to trigger brightness adjustments when you unlock your phone or rotate the screen (No privacy-sensitive data is accessed).Note: This app does NOT require Internet access, Location data, or Phone/Call logs, making it a privacy-respecting utility.

Auto Mute is an open source app to automatically mute or unmute your media volume based on the type of audio playing.Auto Mute can be configured to automatically unmute media audio or show the media volume control when music, media, assistant and game audio starts playing. It can also automatically mute after audio stops playing.

Auto Off BluetoothAuto Off Bluetooth is a lightweight utility for Android designed to preserve battery life and increase device security. The app monitors your Bluetooth connection status and automatically turns off the Bluetooth radio after 20 seconds if no devices are connected.How it worksThe app listens for Bluetooth state changes in the stack and for Asynchronous Connection-Less disconnection events in the background. When a device disconnects, the app starts a timer. If the timer expires without a reconnection, the app automatically disables the Bluetooth adapter to save power. If a Bluetooth device reconnects, the app postpones the Auto Off task until the next disconnect.PermissionsThe app requires the following permissions to manage your Bluetooth hardware:BLUETOOTH: Allows the app to see the status of connections.BLUETOOTH_ADMIN: Allows the app to toggle the Bluetooth radio on/off.BLUETOOTH_CONNECT: To interact with paired devices (required for Android 12+).

Android app for automatic screen brightness adjustment. Replacement for built-in feature. WARNING: This app is not one click solution! It requires some configuration to work properly. It uses 4 pairs of light sensor data and corresponding screen brightness. In-between values calculated as simple linear interpolation of those points. Main intended working mode is "Screen unlock/rotate" - read ambient light data, set brightness once... and do not annoy with backlight beaming anymore. Permissions: - Modify system settings - required to control display brightness - Phone - keep reading light sensor data while phone ringing in pocket - Notifications - to prevent being killed by system - Request ignore battery optimizations - to prevent service suspend - Run background service - it has "special use" type because does not fit in any category - Run at startup - ...

Auto SleepAuto Sleep is a specialized utility designed for users who prefer to rest without interruptions from their devices, whether at night or during the day for those working shift duties.Initially designed for Android 6.0 Marshmallow, the app is built to remain compatible with most recent Android versions.How It WorksThe app automatically toggles Airplane Mode on or off based on your predefined schedule.Note: Root access is required for this app to function properly.Permissions & PrivacyTo provide reliable system automation without compromising privacy, Auto Sleep uses:Root Access & Secure Settings: Necessary to grant the app elevated privileges and modify protected system-level sleep/Do Not Disturb configurations that are normally restricted by Android.Exact Alarm Scheduling: Used to trigger the start and end of sleep mode at precise times, ensuring the app executes its tasks exactly when you scheduled them.Run at Startup (Boot Completion): Ensures your sleep schedule is automatically reactivated and recalculated immediately after a device reboot.Notifications: Used to inform you when sleep mode has been enabled automatically and to provide details on when it will be disabled.Why these are safe:No Internet Access: The app does not request the INTERNET permission, meaning it is physically impossible for the app to send any of your settings or data to an external server.No Personal Data: The app does not access your contacts, location, messages, or files.Open Source Transparency: Every permission used is visible in the source code, and since it relies on Root, you (as the user) maintain ultimate control over when and how the app operates via your Superuser manager.

Customizable SMS text messaging and phone call auto-response system for your Android device. Auto-Away replies custom messages via SMS to people that message you. All auto-replies can be logged in the application for future viewing and can be cleared when no longer needed.

AutoAnswer is a very simple android application to answer the phone automatically when it rings. Can be limited to just contacts or starred contacts. Also has a speakerphone option.

AutoDND is a simple tool to turn on/off DND (Do Not Disturb) automatically when using specified apps. How to use: 1. Open this app and tap on the floating button to grant notification policy access 2. Return to this app and tap on the floating button again to enable accessibility service 3. Enjoy! How it works: This app uses accessibility service to monitor the app that you're currently using, the mechanism is not perfect as Android feeds weird event to the accessibility service in some circumstances. Note: There's no network related code in this app, in other words, your privacy don't get violated with this app.

A small app to let you schedule dark mode. System requirements * At least Android 10. * OEM builds are not supported e.g. Flyme.

Monitors notifications from user-selected apps and sends them to Android Auto. Root is optional, solely used to list apps of other users (profiles) to obtain their info conveniently. However, no root is needed to monitor notifications for any app, including those of other users. To add an app of other users without root, use the "enter app info" button to enter its package name and user id manually.