An alarm clock that won't go off

Challenge yourself in the morning. From a quiet screen like a luxury watch, up to 100 calculation problems await you at dawn.

Features

• Stop the alarm by solving calculations: To silence the alarm, you must correctly answer addition, subtraction, and multiplication problems
• Three difficulty levels: Normal (5 problems), Brutal (20 problems), Hell (100 problems) to choose from
• Sound synthesis with Web Audio API: Generate original alarm sounds without using existing music or external files
• Snooze function: "5 more minutes" allows a 5-minute snooze. Snooze count is recorded and your answer progress is maintained
• Alarm history: Records the latest 100 wake-up results. Demo and emergency stop are not included in success count
• PWA compatible: Use as a browser or installed app
• Accessibility considerations: Dark mode support, keyboard operation, screen reader support, and consideration for motion reduction settings

Main Features

• Save up to 8 alarms by specifying time, alarm name, volume, and difficulty level
• One-time alarms. They trigger the next time the specified time arrives and automatically turn off
• Support for keyboard input and answering with the Enter key
• Share results, preview sounds, and experience alarms
• When you correctly answer the 99th problem, an error-style display appears (not an actual error, but normal progression to the 100th problem)
• Emergency stop button for when you can't continue calculating

Important Notes

We recommend using this while your browser or PWA is open. The alarm may not sound or may sound late due to closing the browser or tab, device sleep, power-saving settings, and other factors. For important schedules, use your device's standard alarm in combination with this app.

All settings, progress, and history are saved in the browser's localStorage and will not carry over to other browsers or devices.