Free Workout Interval Timer for Boxing, HIIT, Tabata, CrossFit & Circuit Training
Build custom interval workouts with auto-progression, sound alerts, and reusable templates. Designed for boxing, HIIT, Tabata, CrossFit EMOMs, and circuit training.
Everything You Need to Train Smarter
A focused timer app built for athletes who want to spend less time setting up and more time training.
Interval Timer
Set work and rest periods with precise control. Supports hours, minutes, and seconds for any workout style.
Workout Templates
Save your favorite routines and reuse them instantly. No more rebuilding the same workout every session.
Auto-Progression
Move seamlessly through intervals, rounds, and segments without touching your phone mid-workout.
Sound & Haptic Alerts
Clear audio cues and vibrations so you know exactly when to go hard and when to rest, even without looking.
Workout Analytics
Track your completed workouts, build streaks, and see weekly and monthly activity at a glance.
Boxing & CrossFit Presets
Start quickly with preset boxing rounds and CrossFit intervals, then customize timing and save your go-to workouts.
Ready in Three Steps
Create a workout once, use it forever. It's that simple.
Create
Build a workout template by adding intervals - set the name, duration, rounds, and type for each segment.
Customize
Reorder segments, adjust durations, and fine-tune rest periods until the workout fits your training plan.
Train
Hit start and let the timer guide you through every interval, round, and rest - hands-free.
Common Questions About Interval Training
Learn how to get the most out of your workouts with Workout Timer.
Why do I need an interval timer instead of just watching the clock?
Watching the clock mid-workout breaks focus, ruins form, and makes every second feel longer. An interval timer handles all the counting for you - it signals transitions with sound and vibration so you can stay in the zone. With Workout Timer, you set your rounds once, hit start, and the app guides you through every interval hands-free.
Can I use this for boxing, HIIT, Tabata, and CrossFit - or just one type of workout?
All of them. Workout Timer lets you build any interval structure: 3-minute boxing rounds with 1-minute rest, 20/10 Tabata protocols, 30/15 HIIT circuits, CrossFit EMOM/WOD sets, jump rope intervals, and more. You save each as a named template and switch between them in one tap - no rebuilding before every session.
Does it work for CrossFit workouts like EMOMs and AMRAPs?
Yes. For EMOMs, set each interval to 60 seconds and add as many rounds as your WOD requires - the timer signals every transition with sound and vibration. For AMRAPs, use a single interval set to your total work window. Save any structure as a template and start it in one tap next session.
Do I have to rebuild my workout every time I open the app?
No. Workout Timer saves your routines as reusable templates. Build your boxing session or HIIT circuit once, save it, and it's on your home screen forever. Tap to start instantly - no setup, no wasted time before training.
Will the timer keep running if I lock my screen or switch apps?
Yes. The timer runs in the background using timestamps, so it stays accurate even with the screen off. You'll get a notification alert whenever an interval changes, so you never miss a transition - even with your phone in your pocket.
How will I know when to switch intervals during a workout?
Workout Timer plays a sound alert and triggers haptic vibration at every interval transition. You'll feel and hear exactly when to push hard and when to rest - no need to look at your phone at all. The screen also changes color based on whether you're in a work, rest, or prepare phase.
Is Workout Timer really free? What's the catch?
Yes, completely free. Templates, auto-progression, sound alerts, background tracking, workout statistics - all free, no paywalls. The app shows ads to stay free, which you can opt out of through your Android ad settings.
How long does it take to set up my first workout?
Under two minutes. Download Workout Timer, tap "Create Template", add your intervals (name, duration, rounds), save - and start. If you train boxing, HIIT, CrossFit, or Tabata regularly, you can also pick from built-in presets and be running in seconds.