Intervals One: Interval Timer

Intervals One – Interval Timer & Voice Coach The interval timer built for real workouts. Crystal-clear voice guidance, fast setup, and smart features for HIIT, Tabata, boxing rounds, circuits, and gym sessions.

No clutter. No complexity. Just a workout timer that gets out of your way and keeps you focused.

TWO MODES. INFINITE POSSIBILITIES.

Simple Mode:
Perfect for quick sessions. Set your work, rest, and rounds for all exercises at once, hit start, and let the voice guidance coach you through every phase. Use it as a HIIT timer, Tabata timer, circuit timer, or round timer for bodyweight training. Premium users can customize each exercise stage with specific movements, reps, and effort levels.

Advanced Mode:
Complete control. Customize every exercise with individual timings per round, choose specific movements from our exercise library, set rep targets or effort levels, and build structured training programs that match your goals.

ONE TIMER FOR EVERY WORKOUT
- HIIT timer and Tabata timer (20s on / 10s off, or any interval you like)
- Boxing round timer for boxing, MMA, Muay Thai, and sparring
- EMOM and AMRAP timer for WODs and CrossFit-style training
- Circuit training and gym timer with rest between rounds
- Rest timer for strength and conditioning
- Jump rope and cardio intervals
- Bodyweight workouts and functional fitness

WHY ATHLETES CHOOSE INTERVALS ONE

Clear Voice Coaching:
Professional voiceovers announce every phase, exercise, and transition. Train eyes-free with clear, motivating guidance that keeps you in the zone.

Intuitive Design:
Create workouts in seconds with our distraction-free interface. No complicated builders or endless menus - just fast, focused setup that gets you moving.

Works Everywhere:
Train offline, indoors, or outdoors. No internet required once downloaded. Works perfectly with wireless earbuds, speakers, or silent mode with vibration.

SMART COACHING FEATURES
- Next exercise cues so you're always prepared
- Halfway alerts to pace yourself
- Round completion announcements
- Customizable countdown timers
- Vibration feedback for silent training
- Adjustable audio cues
- Round recovery periods

PRIVACY FIRST
Your workout data stays yours. No account required.

START FREE
Get unlimited basic interval workouts with full timing customization and premium voice guidance - completely free. Upgrade to Premium when you're ready for exercise selection, rep tracking, and advanced per-round customization.

Download Intervals One – the free interval timer for HIIT, Tabata, and boxing rounds.