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Breez Mobile Client

Breez is a Lightning Network mobile client and a hub. It provides a platform for simple, instantaneous bitcoin payments.
Breez is currently in a public beta, available on Android and on iOS.
To learn more about, please read Introducing Breez.

Features

• lnd on Android
• Neutrino on Android
• Seamless hub channel creation
• Adding funds using on-chain tx
• BTC & Satoshi units
• Random avatars
• Connect to Pay: simple interface to execute payments between users
• A full lncli interface to query and execute ln commands
• Filter tx by type
• Filter tx by date
• Pay invoice (link or QR) from other ln wallets
• Create invoice (link or QR) to be paid by other ln wallets
• Removing funds to an on-chain address
• SubmarineSwaps for adding on-chain funds including refund functionality
• End-to-end encryption of Connect-to-Pay session
• Make Connect-to-Pay links work for users that didn't yet install Breez
• Ability to Backup/Restore the ln node
• Mainnet support
• Support zero-sat invoices
• Startup optimizations
• Background sync via FCM
• Marketplace w/ Bitrefill
• Adding funds via vouchers
• Backup improvements
• Add background ChannelsWatcher job
• Expose Bitcoin Node (BIP157) configuration
• iOS support
• Add webLN support
• Fiat units
• Optional PIN
• Adding funds via credit card
• Add stronger encryption to cloud backup
• iCloud backup option
• Dark mode
• Export payments to .csv
• Support 3rd-party LSPs
• Biometric login
• Fast on-boarding
• Pay w/o full sync
• Implement lnurl-withdraw
• Send on-chain via reverse Submarine Swaps
• Improve hodl invoice support
• POS POC release
• Spontaneous payments to node id (nodes running with --accept-keysend)
• Fast graph sync
• Scan QR code from an image
• Import/export POS items
• Support zero-conf channels
• 'On-the-fly' channel creation (increase limit)
• Remove reserve working using Breez channels
• Support additional fiat currencies
• Support LNURL-Auth & LNURL-Fallback
• Print POS transactions
• Hide balance
• Read NFC tags on Android
• In-app podcast player (podcasting 2.0)
• Backup to WebDav servers (e.g. Nextcloud)
• Support LNURL-Pay (bounty redeemed)
• Send to a Lightning address
• Boostagrams
• WebDav backups
• Sales reports
• Top podcasts
• NFC checkout
• Tor support (open bounty)
• Support LNURL-Withdraw balance check
• Async payments via Lightning Rod
• Neutrino sync optimizations
• Support SD storage

System Requirements

• Android 7+ 64bit
• iPhone 6+

Setting up the environment

Prerequisites

Make sure you have Flutter 2 installed on your system before continuing the setup process. Flutter 3 is currently not supported yet.

Setting up for Android

1. Build breez.aar as decribed in https://github.com/breez/breez
2. Create a symlink from the breez.aar to android/app/libs directory.
3. Create an Android app on Firebase and download google-services.json file.

• Package name (for debugging): com.breez.client.debug

4. Copy the downloaded google-services.json file to android/app/src/client folder.

Setting up for iOS

1. Build and bindings.framework as decribed in https://github.com/breez/breez
2. Copy the bindings.framework directory to the ios directory.
3. Create an iOS app on Firebase and download GoogleServices-info.plist file.
4. Copy the downloaded GoogleServices-info.plist file to ios folder.
5. Run pod install from breezmobile/ios

Building and Running

# Install dependencies for building
flutter pub get

# Run a client app on the connected device
flutter run --flavor=client

# Build a client app as APK file
flutter build apk --target-platform=android-arm64 --flavor=client --debug

Overview for Developers

Running Breez in simnet