Productivity

⚡️ Superpowers for you and your Bitcoin Lightning node! Use and manage your node wherever you are. ⚡️ BitBanana is a native Android app for node operators focused on user experience and ease of use. While it is not a wallet on its own, BitBanana works like a remote control, allowing you to use your node as a wallet wherever you go. The app is designed with an educational approach, providing the user with guidance on every aspect of node operation. BitBanana is open source and fully self-custodial, which means you are in full control of your funds. Features: - Manage multiple nodes - On-chain transactions and lightning payments - Channel management - Routing summary - Contacts - Sign/Verify - NFC support - Tor support - 100% open source ... and many other features to explore!

Have your Bitcoins always with you, in your pocket! You pay by quickly scanning a QR code. As a merchant, you receive payments reliably and instantly. Bitcoin Wallet is a reference implementation of the "Simplified Payment Verification" as described in the Bitcoin whitepaper. FEATURES • No registration, web service or cloud needed! This wallet is de-centralized and peer to peer. • Display of Bitcoin amount in BTC, mBTC and µBTC. • Conversion to and from national currencies. • Sending and receiving of Bitcoin via NFC, QR codes or Bitcoin URLs. • When you're offline, you can still pay via Bluetooth. • System notification for received coins. • Sweeping of paper wallets (e.g. those used for cold storage). • App widget for Bitcoin balance. • Safety: Supports Taproot, Segwit and the new bech32m format. • Privacy: Supports Tor via the separate Orbot app. CONTRIBUTE Bitcoin Wallet is open source and free software. License: GPLv3 https://www.gnu.org/licenses/gpl-3.0.en.html Our source code is available at GitLab: https://gitlab.com/bitcoin-wallet/bitcoin-wallet All translations are managed via Transifex: https://explore.transifex.com/bitcoin-wallet/bitcoin-wallet/ Use at your own risk! Use only for pocket-sized amounts.

A Bitcoin wallet, allowing you to store, send and receive Bitcoins on your device, both via QR codes and NFC. This is a test version of https://f-droid.org/packages/de.schildbach.wallet that uses the Testnet3 network, not the real Bitcoin network.

* Compact widget * Monitor prices on various exchanges * Notifications and alarms * Graphs Newer versions of the app are available elsewhere, but contain proprietary software.

Bites is a very basic cookbook app. Recipes can be created on your phone and shared with friends via SMS. Pick a recipe to make, tick off the ingredients you need, then add the ones you need to the shopping list in https://f-droid.org/packages/caldwell.ben.trolly or SMS them to someone to pick up for you.

BkEmu is an emulator of 16-bit PDP-11-compatible Soviet home computers Elektronika BK-0010/11M.Supported emulations:BC-0010-01: without external blocks (Basik Vilnius), with the MSTD block (Focal + tests), with a 16KB DOS unit of CNGMDBK-0011M: with MSTD or KNGMDEmulated Hardware:Processor K1801VM1 (basic set of commands, except those specific to HALT-mode)Video controller K1801VP1-037 (color and black-and-white modes, screen palettes)Keyboard controller K1801VP1-014Built-in timer K1801BE1Audio output (PCM, bit 6 in register 01777716)11M system timer (50 Hz vector 100 interrupt, bit 14 in register 01776662)Page memory 11M (bits 8-10, 12-14 in register 01777716)Standard six-button joystick on the parallel portDrive controller on flexible magnetic disks K1801VP1-128 (KNGMD, "read-only" mode)Supported formats:The emulator supports loading and saving program images in KUVT-86 (.BIN) format by intercepting EMT 36 on the BK-0010 or system call .BMB10 on the BK-0011M format, as well as mounting images of floppy magnetic disks in the .IMG/.BKD (800 KB) format.

Simple to use map based application, visualizing real time full area lightning data provided by the blitzortung.org lightning location network project. The current thunderstorm situation at your fingertips. Features: * realtime display of lightning data * display of historical lightning data of the last 24 hours * for regions Europe, North & South America, Asia, Africa and Australia/New Zealand * lightning strike time color coded * reduced data volume and fast response * current lightning strike time and lightning count * optional user location marker * alert function shows distance/direction of storms * background service for alerts * support for notifications, sound and vibration alarm * single stroke display for blitzortung.org participants Please visit https://www.blitzortung.org for more information regarding the community based lightning location project. The raster display ensures a fast performance of the application even if there is a very high thunderstorm activity. Blitzortung.org participants can visualize all stroke locations individually. If you would like to contribute to a translation of the software in your language, please do not hesitate to contact the author of the software. User privacy This app can use device location in order to show the users location on the map and for generating warning view and alerts for lightning activity nearby. The lightning warning feature **can also be used without device location permissions** as the location can also be set manually (via preferences but also via long pressing the desired position on the map). You will still be able to use the warning feature without allowing location permissions. In order to have a more efficient data transfer with high resolution lightning data the app only fetches the last 10 minutes of activity in an area of 5° x 5° rounded to five degrees. Although this data is derived from the devices location or the map area currently visible it can not be used to track users. Here is why: Granularity: A 5x5 degree area is extremely large. Latitude: 5 degrees covers approximately 555 km (345 miles). Longitude: At the equator, 5 degrees is also ~555 km. At 50° latitude (e.g., Central Europe/Canada), it is still ~355 km wide. This resolution is sufficient to identify a broad region (e.g., "Central Europe" or "US West Coast") but is completely insufficient to pinpoint a city, let alone a specific person or address. Anonymization: The calculation `(coordinate / scale).toInt()` effectively quantizes the location. All users within that massive 5x5 degree square report the exact same grid index (e.g., x=2, y=10). It is impossible to distinguish between two users within that same ~300,000 km² area based solely on these coordinates. On top of that, there is no data provided which would allow to link subsequent requests coming from the same app. Conclusion: The coordinates generated by `LocalData.update()` are too coarse for individual tracking. They serve only to download lightning data for the correct general region of the world.

Blocker is a component controller for Android applications that currently supports using PackageManager and Intent Firewall to manage the state of components. It can be seamlessly switched between these controllers, and for application rules, you can export and import them. Additionally, it is compatible with backup files generated by MyAndroidTools, and you can effortlessly convert them to Intent Firewall rules. The application also has the potential to be extended in the future. Advantages Lightweight, don't burden the system Easy to use Supports multiple control types Introduction to different component controllers Package Manager The Android system provides a tool called PackageManager, which is used for managing installed applications or obtaining information about them. One of its methods, setComponentEnabledSetting(ComponentName, int, int), allows an application to control the state of its own components. If attempting to use this method to control components in other applications, a signature permission is required, or the call will fail. Fortunately, Android provides another tool called pm that allows users to control component states in command-line mode. However, the pm tool requires root permission to run. The following command can be used to disable a specific package or component: pm disable [PackageName/ComponentName] Whether using PackageManager in the code or pm in command-line mode, the configurations will be written to /data/system/users/0/package_restrictions.xml. Intent Firewall Mode Intent Firewall was introduced in Android 4.4.2 (API 19) and is still effective in the latest Android systems. It is integrated into the Android Framework to filter the intents sent by applications or systems. What Intent Firewall can do Each intent sent by an application is filtered by the Intent Firewall, with rules stored in XML files. The Intent Firewall updates rules immediately if changes occur in the configuration file. Limitations of Intent Firewall Only system applications can read and write the directory where the configuration file is stored, and third-party applications do not have permission to access it. Differences between Intent Firewall and Package Manager Intent Firewall, indeed it is a firewall, it has no impact on component status. The application detects the component is on, but it just cannot start the component. For the components disabled by PackageManager, if an application starts it, an exception will be thrown. Developers can catch this exception to know whether the component is disabled or not, so they could re-enable this component. That's the reason why the components will be enabled unexpectedly. If you are using an Intent Firewall controller, there will be no problems. UI The app was designed using Material 3 guidelines. Huge thanks to our UI designer: @COPtimer The Screens and UI elements are built entirely using Jetpack Compose. The app has two themes: Dynamic color - uses colors based on the user's current color theme (if supported) Default theme - uses predefined colors when dynamic color is not supported Each theme also supports dark mode.

The Blockstream app (formerly Green) is a simple and secure Bitcoin wallet that makes it easy to get started sending and receiving Bitcoin and Liquid-based assets such as Liquid Bitcoin (L-BTC) and Tether’s USDt. Built by Blockstream, one of the most security-focused teams in the Bitcoin industry, the wallet is supported across multiple platforms and is designed for Bitcoin beginners and power users alike. EASY SETUP No registration or personal details are required to get started, just write down your recovery phrase and start making Bitcoin transactions right away. BUY BITCOIN DIRECTLY TO SELF-CUSTODY No intermediate self custody, buy bitcoin directly into your wallet (additional registration may be required). FASTER & CHEAPER BITCOIN TRANSACTIONS Smart fee estimation ensures your Bitcoin payments arrive on time without being charged excessive fees. MULTILINGUAL We speak your language. Green includes support for Brazilian Portuguese, Chinese (Simplified), Dutch, English, French, German, Hebrew, Italian, Japanese, Korean, Russian, Spanish, Ukrainian, Vietnamese. And more to come! BITCOIN LAYER-2 SUPPORT Send and receive Liquid Bitcoin L-BTC, Tether’s USDt, and any other Liquid-based assets with a Liquid account. Bitcoin power users will feel right at home with a wide range of advanced features and industry-firsts: FEE CONTROL Fully customizable transaction fees with replace-by-fee support so that you can start low and adjust the fee if necessary. Great for pushing through urgent transactions without overpaying. HARDWARE WALLET SUPPORT Integration with Blockstream Jade, Ledger Nano S and X, Trezor One and T (see our help desk for latest compatibility across the various supported platforms). TWO-FACTOR THRESHOLDS Require two-factor authentication for large payments only, by setting a two-factor threshold. Total payments up to the threshold can be completed without 2FA. WATCH-ONLY WALLETS Keep an eye on your Bitcoin balances while on the go and receive payments from others without needing to grant payment permissions to your device. TESTNET SUPPORT Easily make test transactions on Bitcoin testnet until you feel comfortable with how the wallet works. PRIVACY No documents, personal information, or KYC required. An email address is needed for wallet recovery purposes only. Connect via Tor at the tap of a button, no other apps needed. CONNECT TO YOUR OWN NODE Verify transactions on your own full node with SPV support.

blood pressure monitor is a reliable blood pressure measurement tracker and analyzer. It is designed to allow saving measurements faster than anywhere else and make sharing data with you doctor effortless. It works out of the box but can also be configured for individual use cases. Key Features: - Reliable measurement storing. - Fast input through user-friendly dialogues on launch and automatic form navigation. - Beautiful analytics provide insights on trends, distribution, differences over the day and much more. - Versatile export and import (CSV, PDF, SQLite) with granular control. - Highly configurable. - BLE GATT input through Bluetooth devices. - No advertisements - no accounts. - Well-documented, open-source code. - Support for entering other related measurements like weight or medicine intakes. - Optionally sync with other apps via Health-Connect. Measurements can be entered manually, or automatically, if you own any device that supports the BlE GATT protocol. We don't recommend any specific device, please do your own research. This app is not a medical device. It does not measure your blood pressure or give you any medical advice. Consult with a doctor for that. This app is only a tool to quickly record measurements in an easy and secure fashion.

Blue Line Console launches your apps, web search engines, and built in calculator via keyboard. You can launch the desired app quickly with your keyboard everywhere. Just type 2 or 3 characters, and likely you can find the desired app on top of list. You need no configuration to do it (although I prepared some configuration for more comfortable usage). You can start Blue Line Console by pressing once you set this app to default Assist App of Android. You can also start from notification bar, available everywhere (find this option in configuration screen, opened with config command). You can input one of below list to search apps or commands. - Part of application name (e.g. Blue Line Console) - Part of package name (e.g. net.nhiroki.bluelineconsole) - URL - Calculation formula (e.g. 2+3*5, 1inch in cm, 1m+1inch, 1m+1inch in cm) - One of commands below (e.g. help) Available commands: - help - config - date - bing QUERY - duckduckgo QUERY - google QUERY - wikipedia QUERY - yahoo QUERY - ping HOST - ping6 HOST Source code: https://github.com/nhirokinet/bluelineconsole

Blue Line Solar Info provides information about sun and moon like sunrise, sunset, moonrise, or moonset. This app provides widget to see sunrise, sunset and moon phase from your home screen. Computing is done on your device, so network connection is not needed. Source code: https://github.com/nhirokinet/bluelinesolarinfo

Description BluePass extracts two factor authentication codes (2FA) from SMS and sends them to a paired device via Bluetooth RFCOMM. A Qt based companion app bluepass-server will receive the 2FA codes and provide them via the system clipboard. Use Case The company I work for is relying on third party services that require to authenticate using 2FA. The second factor is an SMS to your mobile phone. This app was built for convenience, to avoid having to unlock your phone, find the message and then type the received code on the PC. It is not about the time saved, it's about getting rid of robot tasks. Setup You have to configure parameters to match the sender of the SMS and parse the code from the messages sent to you. Currently, regular expressions are used for this task. However, a very basic setup will be provided below. Regular expression for sender has to be set to a regular expression that matches all the senders of SMS (as they appear in your chat application). Multiple numbers and names can be provided: To match CompanyA, you might simply putCompanyA into the box To match CompanyA and 12345678, write (CompanyA|12345678) Regular expression to filter the content has to be set to a regular expression that matches the messages you want to catch. Additionally, it has to define one group to extract the actual code that has to be sent to the PC. To match any number, you can use [^\d]*(\d+).* To match a code only with 6 digits, use: .*(\d{6}).* ... as the process of defining a proper regular expression is not that easy, there is another text box Test message. You can paste here the content of the SMS thatyou want to match and adjust the regular expression until it gets parsed correctly. The last step of the configuration is to pair with the bluetooth adapter of your PC and configure the adapter to be used. Operation Whenever your mobile phone receives an SMS (and the settings above are configured), this app will try to match the sender and content. If one of the two doesn't match, the message will not be processed any further. If the 2FA code could be extracted, a foreground service will be started (status bar) and the app tries to connect to the configured Bluetooth adapter and sends the code. It retries for some amount of time and reports the status in the status bar. Note: The notification in the status bar doesn't automatically disappear. However, this doesn't consume any resources and can be removed using the Stop button. If the code is required on the mobile phone, it can be copied using the Copy last button. Protocol The communication is based on very simple primitives using an RFCOMM channel. The UUID for the service is e4d56fb3-b86d-4572-9b0d-44d483eb1eee. Extracted codes are sent as text (over a secure Bluetooth connection) terminated with a new line character. Therefore, codes may not contain any new line characters. Future The protocol will be changed to something more sophisticated and extensible Configuration of the sender should be done through contact providers and not use regular expressions Allow to use this app to share text / files with the PC

Bluemoon: Your Personal Period Companion Embark on a seamless journey through your menstrual cycle with Bluemoon, the open-source Menstruation/Period Tracker that prioritizes your privacy Privacy First: Rest easy knowing that your most intimate data stays where it belongs—securely on your device. Bluemoon is designed with privacy features out of the box, ensuring that your personal information remains confidential. Simple and Intuitive: Say goodbye to complicated interfaces! Bluemoon keeps it straightforward with easy-to-use features for tracking your periods and understanding your menstrual cycle. Effortlessly log your data and gain valuable insights at a glance.

This project focuses on utilizing the built-in Bluetooth Low Energy (BLE) functionality of Android smartphones to create Phantom Bluetooth Device Advertisements, similar to what is known, for instance, in the case of the Flipper Zero. While there are other apps available that provide similar functionality, the objective of this app is to enhance convenience and user-friendliness in the process.

With this app you can turn your phone into a mobile QR/Barcode scanner and send the value of any code as text input to the connected Bluetooth device. Features: - Wide variety of QR/Barcode types supported - No special software on the receiving side required - Works completely offline - No Ads/In-App-Purchases - Different keyboard layouts to choose - Highly customizable for many use-cases The app works by utilizing the Bluetooth HID feature accessible on devices running Android 9 or later. Using this feature allows the Android device to act like a normal wireless keyboard connected via Bluetooth. That means it should work with every device that supports connecting a Bluetooth keyboard like a PC, Laptop or Phone.

Allow bluetooth HID devices like keyboards, mice and joypads to connect to your phone/tablet.

BmiCalc is a simple app to track the body mass index. BmiCalc can save and load the data from csv file.

Baby on Board is an application of pregnancy tracking that respect your liberty and privacy. It doesn't need permissions. So no risk.

Supports general (binary, octal, decimal and hexadecimal) conversions up to 2^63-1 in their respective formats. It also supports ASCII characters in the range of NUL to DEL (0 - 127). A convenient table is also included for quick lookups also in the range of 0 - 127.

Monitor Bitcoin, cryptocurrencies, cryptoassets, futures and options, and trigger alarms according to user settings. 90+ exchanges and counting. Supports 2 alarm types: * Price Hit - Triggered when price crosses the alarm's upper or lower limit. * Price Change - Triggered when price changes more than X amount (in currency or percentage) in a specified time frame (e.g. 15 min). It uses a rolling time frame: price is fetched with a given update interval (e.g. 30 s) and compared with the price fetched one time frame ago (e.g. 15 min ago). Sound and vibration are configurable globally, and individually for each alarm. Lists of exchanges, pairs and alarms are fully searchable, allowing quick setup and configuration. The alarm list behaves as your ticker, where you can reorder your alarms and directly change their limits. Triggered alarms ring, displaying their status, until you turn them off. Just like an alarm clock. Alarms can also be set to snooze automatically on price retrace. Market data is retrieved directly from the exchanges via Wi-Fi or Mobile Data (if allowed). Boilr supports all available on libdynticker, as all their pairs. For a version history check the GitHub releases page.

BoldWallet is an open-source next-generation Bitcoin wallet that eliminates traditional security tradeoffs and single points of failure. It uses Threshold Signatures (2of3) over your mobile devices — no internet needed for setup or signing. 🔐 Features: • ✅ Seedless setup using Threshold Signature Scheme (TSS) • 🔐 No seed phrases, no paper backups, no hardware wallets • 📱 up to 3 device-based key generation with 2 devices needed for signing • 🎛 PSBT-Signer compatible with wallets like Sparrow, Electrum, etc. • 🔄 P2P encrypted protocol between your devices, over Nostr or Local/Wifi-Hotspot • 🚫 No internet required for setup or signing • 📦 Open-source, verifiable, and offline-capable • 🧾 Supports Mempool.space public or self-hosted for enhanced advanced privacy

An open-source bluetooth file manager for the Wahoo ELEMNT Bolt. Supports browsing, transferring, and deleting files, files can include recorded rides, route directions, and plans, starting routes/plans from internal directories, converting FIT files to GPX when receiving. Gives access to both the USB directory and the internal routes and plans directories. Routes and plans can also be started from the file manager.

Bookmarks is an Android app to save Intents as an organized collection of bookmarks. Not only can you store and organize intents hierarchically into folders and have them perform operations like sending broadcasts or starting activities – you can also schedule this or add bookmarks to your home screen.