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Crescent Cash
APK
Send coins to a Cash Account (https://cashaccount.info) or Bitcoin Cash address with Crescent Cash. Simple. Secure. Trustless. Crescent combines the simplicity of traditional, centralized money apps with the security of trustless Bitcoin wallets. Crescent Cash is a non-custodial wallet that allows for you to send Bitcoin Cash to other Cash Account users with their username, or to normal Bitcoin Cash addresses.
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Critical Maps
APK
This app tracks your location and shares it via a map with all other participants of the critical mass bicycle protest. You can use the chat to communicate with all other participants. Location sharing and chat relies on criticalmaps.net. Location tracking is always active while using the app.
F-DroidGitHub
Critical Velocity
APK
Captain! The planet is collapsing! We have to get out of this tunnel, but we've been hit! Our thrusters are failing.... So begins your journey back to the surface! Watch out for barriers and obstacles in this open source side scrolling arcade style game! Once you reach 25000 points, you will find the exit to the surface and save the lives of your crew, but after passing each obstacle, your vessel picks up speed, making the journey more difficult! Can you make it, Captain?
F-Droid
Croatian for AnySoftKeyboard
APK
Croatian layouts and dictionary for AnySoftKeyboard keyboard app. This is an expansion layouts pack for AnySoftKeyboard. Install AnySoftKeyboard first, and then select the desired layout from AnySoftKeyboard Settings->Keyboards menu.
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Cromite
APK
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CrossWords
APK
A cross-platform game with the same rules as Scrabble that can be played locally (on the same device), or against another device via data-SMS, Bluetooth and the internet. Start games via an invitation sent by email, SMS, or Bluetooth, or if somebody's nearby have them scan a QR Code. Drag letters onto the board next to other letters to make new words; press the number on the right of the screen to commit your move and let the next person move. An English wordlist is included but there is a link to the website to download wordlists to play in other languages. The source code supports push messaging via Google Play, but that won't function in this build even if Google Play is installed. It just means that moves won't be transmitted quite as quickly as if it were supported. Play via SMS or Bluetooth is unaffected by this.
F-Droid
Crossword
APK
Simple crossword solver and anagram search. * Words up to 28 letters * 110,000 word dictionary * Web search word definitions * Anagram search
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CryptPad
Web
End-to-end encrypted collaborative office suite with documents, spreadsheets, and more.
CryptX
APK
CryptX is a student-driven project developed as part of an exploration into information security concepts. The application focuses on implementing encryption and steganography techniques, serving as a hands-on experiment with secure data handling. Built during academic studies in Information Technology, it showcases foundational knowledge in cryptography and secure communication practices.
F-DroidGitHub
Cryptfs Password
APK
This app lets you changes the Android disk encryption password. You will only be required to use the new password at the next boot, so it is important not to forget it until then, and take a full backup just in case. Short of brute-forcing, the only way to recover from a forgotten encryption password is to factory reset the device, deleting all user data in the process, so proceed with caution. The app will verify that you have root access by checking if you have one of the more popular 'superuser' apps (Superuser or SuperSU) installed, and trying to execute a dummy command with su at startup. If your device is not encrypted, it will refuse to start.
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Crypto Prices
APK
Crypto Prices lets you track prices of all cryptocurrencies like Bitcoin, Ethereum, XRP, and Litecoin. You can also view detailed information about every coin, like price history, market cap, and volume. Supports over 10000 Cryptocurrencies View prices of coins and tokens like Bitcoin (BTC), Ethereum (ETH), Bitcoin Cash (BCH), Ethereum Classic (ETC), Litecoin (LTC), Dogecoin (DOGE), Stellar (XLM), Tron (TRX) and many more. Detailed Statistics Get statistics to every coin, like market cap, volume, 24H-High and Low, and an interactive price chart over different time periods. Your Favorites Set coins as favorites to track all prices of your crypto portfolio. Sort favorites in any order you like to view prices even faster. Your Portfolios Add coins from all your real or imaginary crypto portfolios and watch their value change. (This is NOT a crypto wallet. All added coins are imaginary.) Price alerts Create your own alerts for all coins and get notified of large price changes of your favorites. Quick Search Search through all available coins by name or symbol. 56 Supported Fiat Currencies US Dollar (USD), Euro (EUR), British Pound (GBP), Australian Dollar (AUD), Canadian Dollar (CAD), Swiss Franc (CHF), Chinese Yuan (CNY), Japanese Yen (JPY), New Zealand Dollar (NZD) and Russian Ruble (RUB) and more. Feature Overview • List of all cryptocurrencies • Sort coins by marketcap, volume etc. • Add coins as favorites • Sort favorites in custom order • View detailed statistics and price history • Imaginary portfolios • Create price alerts for coins • Get notification on large price movements • Change the currency of the prices shown • Password lock • Search • Dark mode and color customization Free and Open source Crypto Prices is open source and licensed under GPLv3. The source code is available here: https://gitlab.com/cl0n30/cryptoprices
F-Droid
CryptoPass
APK
Generate different passwords from single master password using cryptographically strong method (PBKDF2 with SHA-256). Create strong passwords for different websites (or anything else) using a single secret key. There's no need to remember or store multiple passwords if you can derive them from your master key. Сan easily be used as password generator and password manager. Your passwords doesn't store anywhere, username and url pairs stored for easy access. password = base64(pbkdf2(secret, username@url)) PBKDF2 uses SHA-256 and 5000 iterations. Cuts password to specified length (25 by default). Compatible with Chrome CryptoPass extension https://chrome.google.com/webstore/detail/cryptopass/hegbhhpocfhlnjmemkibgibljklhlfco
F-Droid
CryptoSafe
APK
CryptoSafe is a lightweight, offline-first Android app for military-grade text encryption. Your data never leaves your device. Features: • Strong Encryption: AES-256-GCM with Argon2id key derivation (128 MiB, 4 iterations) • 100% Offline: No internet permission needed. Your data never leaves your device • Screenshot Blocked: FLAG_SECURE prevents accidental leaks • Zero Storage: No logs, no cache, no database • Modern UI: Material 3 design with dark theme and smooth animations • Copy & Clear: One-tap copy and quick clear of sensitive fields Perfect for journalists, activists, and anyone who needs to encrypt sensitive text messages without relying on cloud services or internet connectivity.
F-DroidGitHub
CryptoTracker
APK
CryptoTracker is the ultimate companion for cryptocurrency enthusiasts and investors. With its intuitive interface and sleek Material 3 design, managing your favorite cryptocurrencies has never been easier or more enjoyable.Whether you're a seasoned trader or just starting out, CryptoTracker equips you with all the tools you need to stay ahead in the cryptocurrency market:- Real-time price updates 💹: Keep track of the latest market values in an instant.- Detailed statistics 📈: Dive deep into key data for every cryptocurrency.- Portfolio 💼: Monitor your crypto holdings, track performance over time, and manage your assets with ease.- Insightful charts 📊: Visualize trends with beautifully crafted graphs.- Material 3 design 🎨: Sleek, modern, and user-friendly interface. - Multi-currency support 💱: View rates in your preferred currency.- Privacy-focused 🔒: No data collection ensures your information remains secure.- Ad-free experience 🚫📢: Enjoy uninterrupted use with no intrusive ads.- Lightweight and efficient 🗜️: Optimized for performance to save space and run smoothly.- Open-source 🔧: Transparent, secure, and community-driven.Experience the perfect balance of functionality, privacy, and design with CryptoTracker—your trusted tool for navigating the cryptocurrency market.
IzzyOnDroid
Cryptocam - encrypting camera app
APK
Cryptocam allows you to take encrypted photos and videos so your data is safe even if an attacker gains physical access to your device or SD card. Find a full tutorial on https://cryptocam.gitlab.io Worried that your device or memory card might get into the wrong hands with sensitive footage on it? Cryptocam uses age (X25519 and ChaCha20) to encrypt recorded videos and photos without ever persisting unencrypted data to device storage.
F-Droid
CryptocurrencyPrices
APK
CryptocurrencyPrices is an app for Android devices to check historical cryptocurrency prices (in USD).Its main activity contains a spinner view to select currency (searchable list contains 100 most worth cryptocurrencies - sorted descending by market cap). It also allows to set date range - actual or archival, chosen from date picker. There is, as well, chart which shows selected cryptocurrency price changes (with calculated percentage value of price trend) in selected time period - app allows to select last 1 year, 1 month, 1 week and 24 hours.The app contains a local database. It is used for caching downloaded data - it saves data which has been visible on the screen to allow browsing it later, when no Internet connection is available.
GitHubIzzyOnDroid
Cryptographic ID
APK
Use cases: - Attest the state of a Linux computer When your computer is in a trustworthy state, you can generate a private key hidden in the TPM2 of your computer. This private key can be sealed with the current state of the computer (PCRs). Then the computer can only sign a message with this key when it is in the correct state according to the PCRs. For example, you can seal the key against the secure boot state (PCR7). If your computer is booting an operating system signed by another vendor, the TPM2 cannot unseal the private key. So if your computer can generate a correct signature, it is in this known state. You can create a sealed private key and create such a signature with cryptographic-id-rs (https://gitlab.com/cryptographic_id/cryptographic-id-rs). This is similar to tpm2-totp (https://github.com/tpm2-software/tpm2-totp) but uses asymmetric cryptography. This means you do not need to keep the verification code secure. You can share it safely with the world. - Verify the identity of a phone You can generate a private key when your phone is in a trustworthy state. If your phone can create a correct signature, you know it is the same phone. Since the operating system can access the private key, the security guarantees are much weaker than with a TPM2. So the verification is just as secure as your phone. If you use Graphene OS, also have a look at Auditor (https://attestation.app/tutorial). - Verify that a person is in possession of a private key This works as well as the section above but has the same shortcomings. It can be used to verify someone in person when he sends his public key to you in advance over a secure channel.
F-Droid
Cryptomator
APK
With Cryptomator, the key to your data is in your hands. Cryptomator encrypts your data quickly and easily. Afterwards you upload them protected to your favorite cloud service.Cryptomator requires a license key, which you can obtain from https://cryptomator.org/android/EASY-TO-USECryptomator is a simple tool for digital self-defense. It allows you to protect your cloud data by yourself and independently.Simply create a vault and assign a passwordNo additional account or configuration neededUnlock vaults with your fingerprintCOMPATIBLECryptomator is compatible with the most commonly used cloud storages and available for all major operating systems.Compatible with Dropbox, OneDrive, S3- and WebDAV-based cloud storage servicesCreate vaults in Android’s local storage (e.g., works with third-party sync apps)Access your vaults on all your mobile devices and computersSECUREYou don't have to trust Cryptomator blindly, because it is open source software. For you as a user, this means that everyone can see the code.File content and filename encryption with AES and 256 bit key lengthVault password is secured with scrypt for enhanced brute-force resistanceVaults are automatically locked after sending app to backgroundCrypto implementation is publicly documentedAWARD-WINNINGCryptomator received the CeBIT Innovation Award 2016 for Usable Security and Privacy. We're proud to provide security and privacy for hundreds of thousands of Cryptomator users.CRYPTOMATOR COMMUNITYJoin the Cryptomator Community and participate in the conversations with other Cryptomator users.Follow us on Mastodon @cryptomator@mastodon.onlineLike us on Facebook /Cryptomator
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Cryptool
APK
Cryptography tool application. It makes easy the encryption of text in any place and situation. It has a very useful floating tool mode. It is only about 2 MB. He does not ask for permission or do anything weird.
GitHubIzzyOnDroid
Crystalpad
APK
Crystalpad is a minimalist, open-source notepad for Android.Focus on your thoughts without distractions. It is built with Jetpack Compose and Material 3 for a modern and fluid experience.Key Features:Privacy First: No data collection, no tracking, and no internet permission required.Local Storage: All your notes are stored securely on your device using Room database.Lightweight: Fast startup and low resource usage.A clean and simple notepad that respects your privacy.
GitHubIzzyOnDroid
Cube ACR
APK
An advanced call recording app for Android, capable of recording phone calls, VoIP conversations, and more.
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Cube Run
APK
Cube Run is a minimalist one-thumb 3D runner. The world rushes toward you down a neon three-lane track, and your cube has to dodge, jump, slide and slam its way through everything in the way. Swipe left or right to snap between lanes, swipe up to leap low walls, swipe down to slide under overhead bars — or swipe down in mid-air to slam back to the ground in a hurry. Pillars and wide bars leave just one survivable lane, and once you get going some obstacles slide sideways into the open lane as they approach — so read the track and commit at the last moment. Score a point for every row you clear, with a bonus for shaving past an obstacle by a hair. The track speeds up the longer you survive, the colours drift across the spectrum, and a single mistimed move ends the run in a burst of shards. Features: * One-thumb controls: swipe to switch lanes, jump, slide and slam. * An endless, procedurally generated track — no two runs are alike. * A relentless difficulty ramp that rewards nerve and near-misses. * Tight, tactile feedback with synchronised sound and haptics. * A local high score. No accounts, no ads, no tracking, no network access. * Tiny download and fully playable offline. Cube Run is built with libGDX and is free and open-source software, licensed under the GNU General Public License v3.0.
F-DroidGitHub
Cuberite
APK
An easy way to run a Minecraft server on your phone. Cuberite is a Free and Open Source (FOSS) game server compatible with Minecraft Java Edition. Cuberite is designed with performance, configurability, and extensibility in mind, and also aims to accurately recreate most Minecraft features. The server is written in C++, and there is an extensive plugin system that allows for the user to write their own plugins with Lua. Cuberite currently supports Minecraft Java Edition 1.8 - 1.12.2.
F-DroidGitHub
Cuppa - Tea Timer
APK
Cuppa for Android is finally here! Tired of leaving your tea too long, to become bitter and cold, or drinking it too soon and not appreciating its full potential? Then this utility is for you! To make the app so quick and easy that you'll actually use it, we have built it with simplicity in mind. Just open the app and tap the button for the type of tea you're brewing. That's it. No need to navigate through complicated menus to find a particular tea, or fiddle with settings... unless you want to customize brew times or add your own favorite teas. Once you tap, Cuppa will begin timing the brew and you'll see a teabag appear in the cup and gradually darken as the tea steeps. A countdown timer shows the steep time remaining. You can have up to two separate teas brewing at once, each with its own countdown timer. When the tea is done Cuppa will let you know with a notification -- depending on your device settings, this may be accompanied by a sound and/or vibration. We hope you find Cuppa for your mobile device useful!
F-DroidGitHub