100% Free • No In-App Purchases

The Ultimate FreeHIIT Timer App

High Intensity Interval Training made simple. Customizable work/rest intervals, multiple timer modes, and audio cues. Perfect for fat burning, cardio, and conditioning workouts.

Custom intervals

Multiple workout modes

Burns fat fast

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Complete HIIT Timer Features

Everything you need for effective high intensity interval training

Customizable Intervals

Set any work and rest duration. From short 10-second bursts to longer 60-second intervals, EVOX adapts to your training.

Multiple Modes

Tabata, EMOM, AMRAP, and custom intervals. All the timer modes you need for varied HIIT workouts in one app.

Clear Audio Cues

Distinct sounds for work, rest, and round changes. Train without watching the screen.

Complex Workouts

Build multi-round workouts with different exercises and intervals using our workout builder.

HIIT Training for Every Goal

High intensity interval training is the most efficient way to burn fat and build endurance

Fat Burning

HIIT burns more calories in less time than steady-state cardio. Short, intense bursts keep your metabolism elevated for hours.

Cardio Conditioning

Improve your cardiovascular fitness without long, boring runs. HIIT builds endurance and VO2 max efficiently.

Time-Efficient Training

Get an effective workout in 20-30 minutes. Perfect for busy schedules when you can't spend hours at the gym.

Start HIIT Training Today

Download, configure your intervals, and start sweating.

Download EVOX

Get the app free from the App Store. No account or payment required.

Choose Your Protocol

Pick Tabata (20/10), custom intervals, or use the workout builder for complex sessions.

Train Hard

Start the timer and give maximum effort during work periods. The app guides you through every interval.

HIIT Timer FAQ

Common questions about high intensity interval training

HIIT (High Intensity Interval Training) alternates between short bursts of intense exercise and rest periods. It's scientifically proven to burn fat, build endurance, and improve cardiovascular health more efficiently than traditional cardio.

Effective HIIT workouts typically last 15-30 minutes including warm-up and cool-down. The high intensity means you don't need long sessions to see results.

Common ratios include 1:1 (30 sec work/30 sec rest), 2:1 (40 sec work/20 sec rest), and Tabata (20 sec work/10 sec rest). Start with equal work/rest and progress to harder ratios.

2-4 HIIT sessions per week is optimal. Your body needs recovery between intense sessions. Mix with strength training and lower-intensity activities.

Yes! Start with longer rest periods and shorter work periods. Use low-impact exercises and progress gradually. EVOX lets you customize intervals to match your fitness level.

Still have questions?

Ready to Transform Your Fitness?

Download EVOX now and start high intensity interval training with the best free HIIT timer.