Real-time pose detection
On-device ML reads 33 body landmarks every frame.
No cloud. No lag. Your skeleton is tracked in real time so feedback lands the moment your form drifts.
Hands-free rep counting + form gradingJust lift.
Just lift.
Never count a rep.
Prop your phone and start your set. CalmArms counts every rep and grades each one A through F automatically. Set your number of sets up front and punch in the weight after each one — but you never count a rep, and never touch the screen mid-set.
Built for serious lifters
- 33
- Body landmarks tracked per frame
- 49
- Exercise variations, all graded
- 100%
- On-device — your video never leaves
- 5
- Scoring axes per rep
How it works
From phone in pocket to a logged, graded set in under a minute.
Step 1 of 4
Choose Your Exercise
Single exercise
Pick from the exercise library and select a variation.
Full workout
Pick multiple exercises, choose variations, and set your reps.
Why CalmArms
Counts and grades every rep — hands-free.
Rep counting, form grading, and progress — all running locally on your phone, every set you lift, without you ever touching the screen mid-set.
A–F grading
Every rep gets a letter grade.
A
B
C
D
F
Auto rep counting
Just lift. We handle the math.
Reps are detected and scored individually so you can see exactly where in a set form starts to break.
Privacy-first
Your camera feed never leaves your phone.
All inference runs on-device with Apple's CoreML stack. We don't see your training. Nobody does.
Works offline
Garage gym? Basement? Still works.
Full functionality without internet. Sessions sync automatically the next time you're back online.
The grading system
Five axes. One grade.
Every rep is scored 0–100 across angle accuracy, range of motion, stability, tempo, and bilateral symmetry. The weights shift per exercise so the grade reflects what actually matters for that lift.
A
Score 90 – 100
Excellent form.
Clean angles, full ROM, steady tempo, balanced sides. Keep going.
B
80-89
Good form
C
70-79
Needs work
D
60-69
Poor form
F
< 60
Stop and reset
No coach? No spotter?
Train alone — without guessing.
You don't need someone watching your form anymore. Prop your phone and CalmArms tells you exactly what to fix on every rep — before a sloppy rep turns into a plateau or an injury. It's the second set of eyes you train without.
- ✓Know if you hit full range of motion — every single rep
- ✓Catch the rep where your form broke down, not just the set
- ✓One clear fix at a time, in plain language
Exercise library17 exercises. 49 variations.
17 exercises. 49 variations.
All graded the same way.
Full upper body, lower body, and core — each variation has its own ideal-form template, scoring weights, and form-issue detector tuned by exercise mechanics, not a generic model.
Bicep Curl
Biceps · Forearms
StandardInclineHammerPreacher
Tricep Extension
Triceps (all heads)
Cable PushdownOverheadKickback
Shoulder Press
Deltoids · Triceps
DumbbellBarbellMachine
Lateral Raise
Lateral Deltoids
StandingSeatedCable
Pec Deck
Chest · Anterior Deltoids
Standard
Fly
Chest · Anterior Deltoids
DB FlatDB InclineCable LowCable MidCable High
Lat Pulldown
Lats · Rhomboids
Wide-GripClose-GripReverse-GripSingle-Arm
Pull-Up
Lats · Biceps · Forearms
PronatedChin-UpNeutral-Grip
Row
Lats · Rhomboids · Mid-Back
Wide-Grip CableClose-Grip CableSingle-Arm CableBB Bent-OverDB Bent-OverSingle-Arm DBT-Bar
Leg Extension
Quadriceps
StandardSingle-Leg
Seated Leg Curl
Hamstrings
StandardSingle-Leg
Calf Raise
Calves
StandingSingle-LegSeated
Deadlift
Hamstrings · Glutes · Lower Back
Barbell RDLDumbbell RDLSingle-Leg RDLStiff-Leg
Crunch
Rectus Abdominis
Standard
Sit-Up
Abs · Hip Flexors
StandardDecline
Hanging Leg Raise
Lower Abs · Hip Flexors · Grip
Standard
Ready when you areJust lift.
Just lift.
Your phone keeps score.
Download CalmArms, point your phone, and your first set is counted and graded in under a minute.