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.
Real-time AI form coachGrade every rep.
Grade every rep.
Lift like it's on tape.
Point your phone, start your set. CalmArms watches your form on-device, counts your reps, and grades each one A through F — so you train like a coach is standing next to you.
Built for serious lifters
- 33
- Body landmarks tracked per frame
- 13
- Exercise variations, all graded
- 100%
- On-device — your video never leaves
- 5
- Scoring axes per rep
How it works
From phone in pocket to 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
The first form coach that actually pays attention.
Pose detection, rep counting, and form scoring — all running locally on your phone, all the time you're lifting.
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
Exercise libraryFour lifts. Thirteen variations.
Four lifts. Thirteen variations.
All graded the same way.
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
StandardInclinePreacherHammer
Tricep Extension
Triceps (all heads)
StandardOverheadKickback
Shoulder Press
Deltoids · Triceps
DumbbellBarbellMachine
Lateral Raise
Lateral Deltoids
StandingSeatedCable
Ready when you areLift like the camera
Lift like the camera
is rolling.
Download CalmArms. Point your phone. Get your first graded set in under a minute.