For iPhone and iPhone Duo on iOS 17 or later. Apple Watch optional.
500
exercises in the catalog
113
ready-made workouts, 41 of them free
47
statistics, 14 of them included
Each set, logged from your wrist
New
Built for iPhone Duo
Open it and your workout splits in two: the video and cues on the left, your sets and rest on the right. Closed or side by side with another app, Basalt Lab adapts.
In the picture, last time’s sets and Lab mode are Pro features.
Your workout in two columns
The video and cues on the left, your sets and rest on the right: it all fits on the inner display.
Your month at a glance
Home shows your month next to today’s workout, and Stats lays out its sections two by two.
Folded, unfolded or side by side
Your workout carries on when you open or close the phone, rest timer and sets included.
Set your reps and weight with the Digital Crown, then log the set from your wrist. Your iPhone stays in your bag, within range of the watch: it is what records.
The Digital Crown to adjust
Included
Weight and reps are set without taking your phone out.
Your session heart rate
Included
The curve, your average and your max on your recap.
47 statistics to answer the only question that matters: are you actually progressing? 14 are included, over your last four weeks. The other 33 and unlimited history come with Pro.
Your consistency
Included
The regularity heatmap, your streaks and your trophies: your consistency finally shows.
Plateau detection
Pro
Know it is stalling before you lose weeks to it.
1RM projection
Pro
Your 1RM projected at 3 and 6 months: where you are headed, not just where you have been.
Balance and volume
Pro
Push/pull ratios, strength radar, and an alert when your volume runs past your average.
Three complications cover a strength session: Timers for rest, Heart Rate, Workout. Which watch face holds them, and how to make it appear on its own at the gym.
Open it and your workout splits in two: the video and cues on the left, your sets and rest on the right. What Basalt Lab shows on iPhone Duo, open, closed or side by side.
An upper lower split alternates two upper body and two lower body sessions a week. The exercises for each session, the sample week, the volume it gives you, and why it beats a 4-day PPL.
Yes. You set your reps and weight with the Digital Crown and log your set from your wrist. Your iPhone has to stay within range of the watch during the session, in your pocket or your bag: it is what records.
Do I need a connection to log a workout?
No. Once you are signed in to your account, the app works offline: your history lives on your device.
What is included without Pro?
The unlimited workout log, Manual mode, Apple Watch, Live Activities, the widget, trophies, 14 statistics over your last four weeks, 41 ready-made workouts, 3 custom sessions and 5 custom exercises.
What does Basalt Lab Pro add?
Lab mode, your previous session replayed set by set, the other 72 ready-made workouts, supersets and session comparison, past sessions in your calendar, unlimited customization, your full statistics history, 33 advanced statistics and the strength radar.
Where is my data stored?
On your device, and in backups hosted in the EU, in Paris. Your workouts, loads and health data are never shared.
Which devices does Basalt Lab run on?
On iPhone with iOS 17 or later, and on Apple Watch with your iPhone within range. The app is available in English and French.
