SimpleHIIT - 4 Minute Timer

4 MINUTES. SCIENTIFICALLY PROVEN. HIGHLY EFFECTIVE.

High-Intensity Interval Training (HIIT) is a scientifically proven workout method that delivers maximum results in minimum time. Research shows HIIT can deliver significant cardiovascular benefits in a fraction of the time of traditional cardio.

SimpleHIIT is the simplest way to practice this proven HIIT protocol.

WHY SIMPLEHIIT?

[1. ZERO CONFIGURATION] Open the app. Tap to start. That's it.

• Preparation: 10 seconds
• Work: 20 seconds
• Rest: 10 seconds
• Sets: 8 rounds
• Total: about 4 minutes

This is the scientifically optimized HIIT protocol.

[2. MULTI-SENSORY FEEDBACK]

• Visual: Phase-specific colors (Green = Work, Orange = Rest)
• Audio: Clear alerts for phase transitions
• Haptic: Vibration feedback synced with countdown

Know exactly what to do without looking at your screen.

[3. MUSIC FRIENDLY] Keep listening to your favorite music or podcasts. Timer sounds coexist with your audio - no interruptions.

[4. BACKGROUND OPERATION] Timer keeps running accurately even when using other apps. Push notifications alert you to phase changes.

[5. BEAUTIFUL & INTUITIVE] Clean dark-mode interface. Large numbers and progress rings - visible even mid-workout.

PERFECT FOR

• Busy professionals with no time for the gym
• Remote workers fighting sedentary lifestyle
• Anyone tired of complicated fitness apps
• Morning routine optimizers
• Science-backed fitness seekers

HIIT BENEFITS

• Improves both aerobic and anaerobic capacity
• Maximizes fat burning efficiency
• Boosts cardiovascular health
• Increases metabolism
• Triggers afterburn effect (EPOC)

All in just 4 minutes.

PRICING

SimpleHIIT is free to use. All workout features are available without any limitations.

• Remove Ads: Optional in-app purchase
• Support Development: Buy the developer a protein shake if you love the app

START NOW

Download. Tap. Transform. Your 4 minutes start here.