Voice-powered workout tracking

Just say it.
Build logs it.

Call out your reps mid-set and Build logs them before you rack the bar. No typing. No tapping.

Built for serious lifters · iPhone & Apple Watch · Free to start
"225 for 5"
Set logged
Build app — voice logging
Screenshot goes here
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Build on Apple Watch
Watch
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Workout
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Your workout, ready to log
Listening…
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Build reading your set as you speak
Logged
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Set logged and checked off
Voice logging

Log a set without touching your phone.

Build on Apple Watch
Watch
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Apple Watch

Run your workout from your wrist.

Leave your phone in your bag. Run the whole workout from your wrist.

  • Current set, target reps & live rest timer
  • Real-time heart rate and calorie ring
  • Tap or talk to log — no phone needed
Pick a routine
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Choose a routine screenshot to import
Reading…
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Build reading the routine from your photo
Ready
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Imported routine ready to track
Routine import

Bring your whole program with you.

Everything else

A complete tracker, minus the busywork.

Everything serious lifters expect — fast, and out of your way.

Apple Watch

See your current set, rest timer, and live heart rate. Log a set right from your wrist.

Apple Health

Completed workouts — duration, calories, and heart rate — sync straight to Apple Health.

Progress & PRs

Personal records, per-exercise charts, and a dashboard you arrange the way you think.

Supersets, RPE & plates

Track how it really went — superset groups, RPE, set types, and a built-in plate calculator.

Works offline

Gym dead zone? Keep logging. Everything syncs the moment you're back online.

Your data, exported

Coming from another app? Import your history. Want out? Export to CSV anytime. No lock-in.

Stop typing at the gym.

Log faster, lift more. Run your next workout by voice.