Interval Timer

How to use

1. Choose Tabata, HIIT, or Custom
2. Set work duration, rest duration, and rounds
3. Press Start — the timer alternates between work and rest

Features

• Tabata (20/10) and HIIT (40/20) presets
• Custom work/rest/rounds
• Color-coded work (red) and rest (green) phases
• Total workout time display