By npub16lr......n8mfeq

ZapClock

Android
Android
By npub16lr......n8mfeq

ZapClock is a funny alarm app powered by the Bitcoin Lightning Network.
The alarm can only be stopped by sending a Lightning payment - a unique way to start your day by supporting the Bitcoin/Nostr community!

🚨 Key Features:

  • Alarm stops ONLY when you send Lightning sats
  • Or use as a regular alarm (without payment requirement)
  • Recurring alarms with flexible day-of-week scheduling (once, daily, weekdays, weekend, custom)
  • Custom alarm sounds and ringtones
  • Vibration support
  • Wake up and contribute to the ecosystem every morning

⚡ Lightning Integration:

  • Nostr Wallet Connect (NWC) - use your existing wallet (Alby, Mutiny, etc.)
  • Lightning Address support with LNURL-pay protocol
  • Penalty Preset System - Choose from 6 smart presets:
    • ⚡ 15 seconds / 21 sats
    • 🔥 30 seconds / 42 sats
    • 💪 1 minute / 100 sats
    • 😴 5 minutes / 500 sats
    • 😱 10 minutes / 1,000 sats
    • 💀 15 minutes / 2,100 sats
    • ⚙️ Custom (set your own timeout and amount)
  • Configurable donation recipients via YAML
  • Default recipients: ZapClock Developer, Zeus Wallet Developer, Sparrow Wallet Developer
  • Per-alarm recipient override supported
  • Payment messages automatically included ("donation from ZapClock")
  • Secure: NWC connection stored locally only
  • Alarm continues ringing if payment fails (ensures you wake up!)

🌍 Internationalization:

  • Multi-language support (English and Japanese)
  • Easy to add more languages via ARB files

🎨 Design:

  • Material Design 3 with dynamic colors
  • Dark theme support (automatic)
  • Bitcoin/Lightning-themed orange palette
  • Simple, intuitive interface
  • Onboarding screen for first-time users
  • Permission management system

🔧 Technical:

  • Rust backend for cryptographic operations (nostr-sdk, nwc)
  • Flutter for smooth cross-platform UI
  • Riverpod 2.6.1 for state management
  • Android 6.0+ (API 23+) support
  • flutter_rust_bridge for seamless Rust-Flutter integration
  • Enhanced logging and error handling
  • ProGuard optimization for production builds

✨ Fully Functional & Ready to Use:
ZapClock is production-ready with all core features implemented and tested!
Wake up every morning knowing you're supporting the Bitcoin/Nostr ecosystem.

🔮 Future Enhancements:

  • Amber (Nostr Signer) integration for secure Nostr login
  • Donate to your Nostr follows - random selection with Lightning Address
  • Identity-aware zaps (NIP-57 support)
  • Payment history and analytics
  • iOS support

Perfect for Bitcoin enthusiasts who want to start their day by supporting the decentralized ecosystem!

⚠️ Requirements:

  • Nostr Wallet Connect (NWC) compatible wallet (Alby, Mutiny, etc.) for Lightning payment features
  • Android 6.0 or higher
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