Global Settings
🔊 Alarm sound
🔔 Enable notifications (both modes respect this)
Alarm sound type:
Volume:
70%
Repeat times:
2
🔔 Notification permission:
checking...
🌐 Browser Notification Mode
Uses standard new Notification() + setTimeout fallback.
✅ Works when tab is visible / background, ❌ might be throttled if tab closed.
00:10
(10s session)
📱 PWA (Service Worker) Mode
Uses Service Worker showNotification + keep-alive.
✅ Works even if tab is closed, phone locked, or PWA installed.
00:10
(10s session)
Test Activity Log
📌 Ready – Choose a mode and start 10-second timer.
✅ PWA mode requires notification permission + active Service Worker.
🎵 Quick Sound Tests