Surge: Interval Timer & HIIT

Surge is a beautifully designed interval timer built for HIIT, Tabata, boxing rounds, EMOM, and any circuit-style workout — at home, in the gym, or ringside. Set your work and rest periods, choose your rounds, and go.

BUILT-IN PRESETS
• Tabata — 20s work / 10s rest × 8 rounds
• HIIT — 40s work / 20s rest × 10 rounds
• Boxing — 3:00 work / 1:00 rest × 6 rounds
• EMOM — 60s intervals × 10 rounds
• Stretch — 30s work / 10s rest × 12 rounds

FULLY CUSTOMISABLE
• Adjust work time (5s – 10:00)
• Adjust rest time (0s – 5:00)
• Set rounds (1 – 50)
• Preparation countdown (0 – 30s)
• Save custom presets with icons

DESIGNED TO PERFORM
• Dark UI with animated progress ring
• Large, glanceable countdown display
• Audio cues and countdown beeps
• Haptic feedback on phase transitions
• Screen stays awake during workouts
• Universal — one app for iPhone and iPad

SURGE PRO (one-time purchase, no subscription)
• Up to 20 saved presets in total
• Edit the built-in presets
• Unlock all 20 preset icons
• Skip a phase mid-workout

ZERO DISTRACTIONS
• No account required
• No ads
• No data collection — your presets stay on your device
• Just press play

Perfect for CrossFit-style WODs, circuit training, jump rope intervals, strength training, yoga flows, and any timed workout routine.