HIIT · AMRAP · EMOM · Circuits

The interval & circuit workout timer with live heart rate

Build interval workouts your way — HIIT, AMRAP, EMOM or circuits — and run them with a big dual-ring timer, live heart rate and per-session performance insights. Design them as stations grouped into blocks and rounds, with configurable work and rest. Build and review on the web; train in the iOS app.

WORK0:45Wall balls

BLOCK 1ROUND 2STATION 1/4146 BPM

How a workout is put together

Three building blocks. Once they click, you can describe and build any session in about ten seconds.

Station
One exercise, done for a single work interval — the smallest piece of a workout.
Wall balls
45s of work
Block
A group of stations run back-to-back, with a short rest after each one.
Wall ballsRowSled push
3 stations · 15s rest between · 2m 45s
Round
One full pass through all your blocks, with a longer rest between blocks — and between rounds when you repeat.
Block 1
60s
Block 2
2 blocks · 60s between blocks · 6m 30s

work restRepeat that round 3 times and you have 18 work intervals in 21m 30s, with rest between every station, block and round. Change any number and the app recalculates the rest and totals automatically.

What it does

Build the session, run it on the clock, then see what actually happened.

Build

Design the session before you get to the gym.

Workout builder

Build sessions as stations grouped into blocks and rounds, with configurable work and rest intervals. Timed intervals, reps mode, EMOM, AMRAP and Tabata-style rounds are all supported.

Workout of the Day

A new session published every day in three difficulty bands — Beginner, Advanced and Elite. Pick the one that fits and the targets scale with it, so the same workout suits whoever is running it. Every card shows its structure and duration up front: style, stations, rounds, total time and work-only time.

Presets and programs

Start from curated workout presets and featured programs — including HYROX-style circuits and a full race simulation across the eight standard stations. Copy any of them and make it your own.

Run

Put the phone down and follow the clock.

Dual-ring run screen

A full-screen workout timer showing two rings at once: the current interval counting down, and your progress through the whole session. Voice cues, haptics and rest indicators so you never miss a transition.

Voice coaching in four languages

Spoken cues call every transition, countdown and rest, so the phone can stay on the floor. Available in English, Spanish, French and German, with a choice of voice, adjustable volume, optional sound effects and a countdown before the first interval.

Live heart rate

Works with standard Bluetooth heart-rate monitors and chest straps, showing live BPM, heart-rate zones and time in zone as you train.

Review

See what actually happened, not what you remember.

Performance insights

Every session becomes workout analytics: time splits per station, session-to-session comparisons, time in zone, and heart-rate metrics including training load (TRIMP), HR drift, fatigue and decoupling.

Share workouts

Send a workout to a training partner with a link, or import one they send you.

Ready to Start Training?

Build your first session on the web, then run it on the clock.

Get Started Free