Ad-Free

SiYuan is a privacy-first personal knowledge management system, support fine-grained block-level reference and Markdown WYSIWYG. Features Most features are free, even for commercial use. Content block Block-level reference and two-way links Custom attributes SQL query embed Protocol siyuan:// Editor Block-style Markdown WYSIWYG List outline Block zoom-in Block horizontal layout Million-word large document editing Mathematical formulas, charts, flowcharts, Gantt charts, timing charts, staffs, etc. Web clipping PDF Annotation link Export Block ref and embed Standard Markdown with assets PDF, Word and HTML Copy to WeChat MP, Zhihu and Yuque Database Table view Spaced repetition Multi-tab, drag and drop to split screen Template snippet JavaScript/CSS snippet Android/iOS APP Docker deployment API Community marketplace Some features are only available to paid members, for more details please refer to Pricing.

SicMu Neo is a lightweight, full-featured, file-based audio player with a simple to use UI and low resource footprint. It is especially well-suited for large music libraries organized in folder structures. Installation Note: After a fresh install it might be necessary to go into the settings, scroll down and trigger a media scan. This will take at most one minute. After restarting the app, your music should appear. Features: * Song grouping by artist/album or folder structure * Multiple shuffle modes, multiple song repeatition options, A-B looping, set playback speed * Shake the phone to skip a song (after enabled) * Light: starts in sub-second time and runs with no delay for music libraries with >1K files * Audio metadata reading * Filter by and edit star ratings * Notification with sound control * Scrobble support via third-party apps * Sleep timer (turn of music after X minutes/hours) * Multiple color themes (dark-red, dark-white, white) * Supports virtually all audio formats (mp3, ogg, flac, wav, ...) New in this fork: * Search * Advanced album art loading (You have an Album.jpg file? It will be considered.) * Album art zooming * Individual mono/stereo settings per audio output * Radio shuffle mode (Random song order, starts first song selected at random point in the song) * More options in long press menu, e.g. search on Genius.com or YouTube.com * Changed the audio backend to the modern ExoPlayer, causing less RAM usage (220MB prior vs 135MB now) * Ability to read comment metadata fields * More translations (most notably Spanish) * Basic accessibility support * bugfixes

Lightweight audio player which features a single over-all playlist with every song on the device. SicMu player can show songs in a tree view following device's folder hierarchy. Songs can be sorted and grouped by folders or artists. Many other features are available, see website.

Sickbeard is a PVR application for newsgroups that searches for and manages your TV shows. This app connects to the Sickbeard server to manage the downloads etc.

Sideload Helper by Rebble helps you sideload Pebble watch files (.pbw, .pbl, and .pbz) and Pebble Store links into the official Pebble app. Explanation of permissions: REQUEST_DELETE_PACKAGES - This is used so that Sideload Helper by Rebble can help the user uninstall the Sideloader app once the Pebble app replacement is released by Rebble.

Android app that intercepts social media URLs and redirects them to alternative frontends while removing tracking parameters. No apps or accounts needed to access the content shared with you. Alternative Frontends Bypass closed ecosystems and access a more open internet - with a less cluttered web experience. Sidestep supports several major platforms with configurable alternatives: Twitter/X → Nitter Reddit → Redlib YouTube → Invidious, Piped Google Maps → OpenStreetMap IMDb → LibreMDB Medium → Scribe Wikipedia → Wikiless Goodreads → BiblioReads Genius → Dumb, Intellectual Tumblr → Priviblur UrbanDictionary → RuralDictionary Imgur → Rimgo GitHub → GotHub StackOverflow → AnonymousOverflow Flexible Configuration & Smart URL Cleaning Automatically removes tracking parameters from all URLs: UTM parameters (utm_source, utm_medium, etc.) Platform-specific trackers (Twitter s/t, YouTube si, Instagram igsh) E-commerce tracking (Amazon, affiliate links) Analytics parameters Granular control over how URLs are processed: Unshorten URLs: Automatically resolves shortened links (bit.ly, t.co, etc.) Remove Tracking: Strip analytics and tracking parameters Immediate Navigation: Automatically open the processed URL in your browser Clean Only Mode: Remove tracking without redirecting Clean & Sidestep Mode: Remove tracking AND redirect to alternative frontend Custom Redirects: Add your own domain mappings Instance Picker: Fetch live, healthy instances sorted by uptime Tracking-proof Previews fetched via DuckDuckGo (optional) No Data Collection: Zero analytics, zero tracking Local Processing: All URL cleaning happens on-device

This App recreates the classic card game Half past seven. It is played with a Spanish deck of 40 cards (without 8 or 9), in which each card is worth as many points as its numerical value except the figures (jack, horse and king), which are worth half a point. It is played in turns against the bank or between two players (the second player acts as the bank). First a player draws a card from the deck until he stands by clicking on the score (if it is not passed before and then loses); When the first player stands, the turn of the other player or the bank begins. The player who comes closest to 7.5 wins without going over. In the event of a tie, the bank wins.

Sift is a minimalist recipe keeper. It uses AI to extract just the recipe from a website, leaving out ads and long stories. You get a clean, easy-to-read recipe. - Import recipes from any website using AI by connecting to a LLM provider - Add recipes manually - Edit and organize recipes with custom tags - Local-first storage, your data stays on your device

Get the current menus served at the university canteen of southern Erlangen. * Up-to-date menu * Pictures * Comments * Ratings

Sigil is an open-source, advanced encryption utility built for defense-in-depth and memory safety. Unlike standard tools that rely on a single algorithm, Sigil employs a multi-layered, configurable architecture to ensure your data remains secure against sophisticated cryptanalysis.The application operates entirely offline, performing all cryptographic operations locally on your device with a modern Material 3 interface that balances high-level security with usability.Core Security FeaturesEncryption Profiles: Customize your security posture. Switch between "Standard AES-GCM" (Raw mode) for compatibility with external tools, or the "Sigil Chain" for maximum defense.Multi-Layer Cascade: The default Sigil Chain wraps your data in a hybrid cascade of XChaCha20-Poly1305 + Serpent-CBC + Twofish-CBC + AES-256-GCM. This defense-in-depth approach ensures that even if one algorithm is compromised, your data remains protected by independent layers.Zero-Knowledge Auth: Secure the app with a numeric PIN or a strong alphanumeric Password. Credentials are hashed using Salted Argon2id and never stored in a reversible format.Hardware-Backed Vault: When supported by the device, master keys are generated and stored in the Android Keystore (or StrongBox). Saved encryption passwords never touch the disk in plaintext.Memory Hygiene: Sensitive data buffers are zeroed where possible after use to reduce exposure to memory dumps.Privacy & System HardeningScreen Security: Prevents screenshots and hides app content in the "Recent Apps" overview using FLAG_SECURE, protecting against visual snooping and malicious screen recorders.Clipboard Protection: Automatic wipe timers and Android 13+ sensitive content flags prevent clipboard managers from retaining your decrypted data.Offline-Only: Sigil does not request the INTERNET permission. It tracks no analytics, collects no telemetry, and stores no data on external servers.Advanced User ToolkitSecure Keystore: Save, view, and manage encryption keys using the hardware-backed vault.Custom Encryption Control: Full manual control over encryption chains. Build your own cascade from 18 algorithms, reorder layers, and toggle ZLib compression.System Console: Real-time logging of the encryption process, providing precise timing metrics and error diagnostics.Advanced Theming: Material You Dynamic Colors, Dark/Light modes, and a custom HSV color engine.Technical SpecificationsKey Derivation: Argon2id (Configurable up to 256MB RAM) + SHA-512 pre-hashing.Supported Algorithms: AES-256-GCM, AES-256-CBC, ChaCha20-Poly1305, XChaCha20-Poly1305, ARIA-256-GCM, Twofish, Serpent, Camellia, CAST6, RC6, SM4, GOST, SEED, Blowfish, IDEA, CAST5, TEA, and XTEA.Open-Source TransparencyThe complete source code is available for public audit on GitHub: https://github.com/Animesh-Varma/SigilFor the complete release roadmap and planned features, please visit: https://github.com/Animesh-Varma/Sigil/releasesFor any queries, please contact: sigil@animeshvarma.dev

Signal is an open-source end-to-end encrypted messaging app.

Audio signal generator with twirly knob. The frequency knob responds to finger twirling. The fine frequency and level sliders allow for fine adjustments of frequency and output level. The frequency knob is also adjustable using the left and right arrow buttons. The two bookmark buttons below the frequency knob show if there are bookmarks, and will go to the next lower or higher bookmark if it exists. * Frequency range 0.1Hz - 25KHz * Level range 0dB - -80dB * Set exact frequency * Frequency bookmarks

Signal is a messaging app with privacy at its core. It is free and easy to use, with strong end-to-end encryption that keeps your communication completely private. * Send texts, voice messages, photos, videos, GIFs, and files for free. Signal uses your phone’s data connection, so you avoid SMS and MMS fees. * Call your friends with crystal-clear encrypted voice and video calls. Group calls supported for up to 40 people. * Stay connected with group chats up to 1,000 people. Control who can post and manage group members with admin permission settings. * Share image, text, and video Stories that disappear after 24 hours. Privacy settings keep you in charge of exactly who can see each Story. * Signal is built for your privacy. We know nothing about you or who you’re talking to. Our open source Signal Protocol means that we can’t read your messages or listen to your calls. Neither can anyone else. No back doors, no data collection, no compromises. * Signal is independent and not for profit; a different kind of tech from a different kind of organization. As a 501c3 nonprofit we are supported by your donations, not by advertisers or investors. * For support, questions, or more information please visit https://support.signal.org/ To check out our source code, visit https://github.com/signalapp Follow us on Twitter @signalapp and Instagram @signal_app

There’s an incredible amount of radio signals. It’s impossible to know them all, let alone recognize them. So why not get help from SignalID?At the moment, it recognizes about twenty signals (complete list in the application). With only 5 seconds of recording time, it tries to recognize the signal. To use it:Set the frequency and bandwidth properly.Selecting the frequency range. (0-30 MHz / Other)Place the microphone of the telephone near the loudspeaker. (The quieter the environment is around, the fewer errors will occur)Press the big button that dances.Wait 5 seconds. (Time required for record)Tips:The algorithm is based on frequency, a wrong tuning of your radio/SDR will result in an erroneous detection.The recording is limited to 5 seconds, for practical reasons. Recognition of a signal may require several attempts.Note: author no longer provides APKs, and development sopped in 2020, so there won't be any updates here.

Frustrated by silent drops from 5G to 4G? SignalSense alerts you the instant your network changes – giving you the power to pause downloads, save your data, and avoid unexpected charges. SignalSense continuously monitors your mobile network and notifies you whenever your connection switches between 5G, 4G, 3G, or 2G – helping you identify network issues before they affect calls, streaming, gaming, or downloads. FEATURES - Instant Alerts Get notified the moment your network drops from 5G to 4G, or 4G to 3G. Stop wondering why your video buffered – know exactly why. - 5G SA and NSA Detection Accurately distinguishes between 5G Standalone (SA) and Non-Standalone (NSA) connections – not just "5G". - Custom Ringtones & Vibration Control Choose your own custom ringtone and control vibration settings for network alerts. - Live Speed and Ping See real-time download and upload speeds in the persistent notification, and live ping on the home screen. - Call-Aware Alerts Alerts are automatically held during active phone calls and fired after the call ends. No interruptions at the wrong moment. - Anti-Spam Debouncing Rapid signal fluctuations are detected and grouped into a single "unstable signal" alert instead of spamming your notification shade. - Switch History Log Every network change is logged with a timestamp and network speed. Review your full connection history at any time. - Fully Customizable Alerts Choose exactly which transitions alert you: - Network Upgrade - Network Downgrade - Mobile Data Lost / Restored - Any Network Change - Smart Auto-Start / Auto-Stop Monitoring can automatically start when mobile data turns on and stop when it turns off – completely hands-free. - Boot Auto-Start Optionally start monitoring automatically every time your phone boots. - Dual SIM Support Choose which SIM slot to monitor or use Auto mode to always follow your active data SIM. Switches instantly when you change your default data SIM. - Battery-Friendly Uses a lightweight foreground service with minimal battery impact. Built for all-day use. No ads. No tracking. No data collected. 100% private and open source.

This app tests the signature spoofing capability of your Android OS as required by the microG Project. It attempts to fake its own signature and reports whether it succeeds. Simply launch the app to see the result of the test. You can find more information about signature spoofing here.

When someone who sounds like your mother calls in a panic asking for bail money, Signet lets you verify it's actually her. Each paired contact generates a rotating 4-word phrase that only the real person's phone can produce. You ask her to read her phrase aloud; you type what you hear. Green banner: verified. Red banner: something's wrong — hang up and call her back on a number you already trust. Signet works over any channel. Voice calls, video calls, text, email, in person. The only requirement is that the two of you paired once, in person or over a trusted channel, before the crisis. Built for a world where AI voice cloning is commodity. Defends against: * Real-time voice and video deepfakes * Pre-recorded deepfake voicemails * Vishing using scraped biographical knowledge * Compromised messaging accounts where the attacker has chat history but not the paired device * SIM swaps * Reflection attacks: the rotating code is direction-aware, so an attacker echoing your own phrase back at you fails Core properties: * No server. No cloud. No account. No INTERNET permission. * No telemetry. No analytics. No ads. * Hardware-backed secrets via Android Keystore, StrongBox when available. * Offline-first; airplane mode does not affect any flow. * RFC-validated crypto (X25519, HKDF-SHA-256, AES-256-GCM, BIP-39). * Open source, AGPL-3.0. v0.3 includes in-person pairing, long-distance pairing, lost-phone recovery via paper or file, multi-relationship storage, in-person rekey, bulk backup (every paired relationship in one encrypted file with a single 8-word unlock), a printable challenge-response grid for when the other side can't reach their phone, liveness prompts for video calls, and screenshot blocking on sensitive screens. Not included: duress codes (gated on an abuse-analysis pass), account recovery (there is no account), cloud backup (out of scope forever).

Calculate electric bill based on electric consumption in home.

NOTE: App has is not been developed any more and its source repo is no longer available. Silence is an SMS/MMS application that allows you to protect your privacy while communicating with friends. Using Silence, you can send SMS messages and share media or attachments with complete privacy. Features: * Easy. Silence works like any other SMS application. There's nothing to sign up for and no new service your friends need to join. * Reliable. Silence communicates using encrypted SMS messages. No servers or internet connection required. * Private. Silence provides end-to-end encryption for your messages using the painstakingly engineered Signal encryption protocol. * Safe. All messages are encrypted locally, so if your phone is lost or stolen, your messages are protected. * Open Source. Silence is Free and Open Source, enabling anyone to verify its security by auditing the code.

Configure the phone to go silent and/or airplane mode between two times of the day.

SilentNotes is a note taking app which respects your privacy. It doesn't collect personal data, runs free of ads and is an open source (FOSS) software. Write your notes in a comfortable WYSIWYG editor with basic formatting like headers or lists, and synchronize them end-to-end encrypted between Android and Windows devices.Beside writing of traditional notes, you can also create to-do lists to keep track of your pending tasks. Additionally the notes can be password protected with your own password, and quickly found with a full-text search.Take your notes wherever you are, and share them between your Android and Windows devices.Write the notes in an easily operated WYSIWYG editor.Create To-Do lists to keep an overview of your pending tasks.Protect selected notes with a user defined password.Organize and filter the notes with a tagging system.Quickly find the right note with the full-text search, just by typing a few letters.Store the notes to an online-storage of your choice (self hosting), this allows to synchronize them between devices and offers an easy backup.Currently supported are the FTP protocol, the WebDav protocol, Dropbox, Google-Drive and One-Drive.The notes never leave the device unencrypted, they are end-to-end encrypted and can only be read on your devices.A dark theme is available for more comfortable working in dark environment.Use basic formatting to structure your notes and make them more readable.Get a note back from the recycle-bin if it was deleted by accident.SilentNotes does not collect user information and requires no unnecessary privileges, thus the name silent notes.SilentNotes is an open source project, its source code can be verified on GitHub.The Windows version is available from the Microsoft store.

If you're standing at a store checkout or reception desk and need to tell someone your personal information (such as your phone number or date-of-birth), anyone standing nearby can overhear it. Instead, you can use Silent Share to visually display the information on your phone in a large, easy-to-read font. The main screen shows the default user account ('Me') and some dummy fields ('Name' and 'Phone'). Use the floating Edit button to add, edit and remove fields. Fields can have any name and value you like, and you can add as many fields as you like. To show someone your information, from the main screen check the boxes next to the fields you want to show, then press the floating View button. You can add other users' information too (or just divide your own information between multiple accounts). Press the User icon on the main screen to see a list of users. Press on a user to see and edit their information, or use the floating button and menu to add or edit/delete users respectively.

Silicon Calculator is a simple calculator with attractive graphics. It's a cloned version of the Apple calculator, but with more attractive graphics, history for calculations, and dark and light theme support.

Write and keep single line notes using this very easy application. Example: for website address, for email address, for IP address, for URL, for phone number, for reminder, for message template, for names, or anything single line. Features 1. Export using .txt files. 2. Import using .txt files. 3. Easy search. 4. Easy copy using long click. 5. Open source.