Comparison

FormLab vs CalmArms

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

FormLab

Features
Read full description

FormLab is a personal trainer app that analyzes your workout form in real time using your iPhone camera and Apple Vision AI. ◆ Real-Time Form Analysis Simply point your camera at yourself and AI instantly detects joint positions, analyzing your squat movement in real time. No wearable devices needed. ◆ 7 Form Issues Auto-Detected • Knee Valgus (Knee Caving In) • Insufficient Depth • Excessive Forward Lean • Heel Rise • Left-Right Asymmetry • Butt Wink • Hip Mobility Issues ◆ Side + Front Analysis Side view analyzes depth, forward lean, and heel position. Front view analyzes knee alignment and asymmetry. ◆ Detailed Post-Workout Report After each session, receive a grade (Excellent/Good/Fair/Needs Work), form score, perfect form ratio, depth achievement rate, and more. ◆ Workout History & Video Replay All workout records are saved automatically. Review recorded videos with an issue timeline to see exactly when form problems occurred. ◆ FormLab Pro One-time purchase, use forever: • No ads • Unlimited reps per session • Unlimited workout history • Workout recording • Issue timeline Form analysis and video processing stay on-device. For Pro users, workout records may be stored on our server for secure cloud sync when connected to the network. Workout videos are not uploaded.

About

CalmArms

This AI-powered coach uses your phone's camera to analyze your weightlifting form in real-time. Get instant feedback on each rep, including a letter grade and specific corrections for range of motion, alignment, and tempo. Improve your technique and prevent injuries without wearables or a personal trainer.

Highlights
  • Real-time form grading
  • On-device AI analysis
  • Rep detection
  • Specific feedback on technique
  • Supported exercises list
  • Detailed rep history (Pro)
Features
Read full description

Build muscle with reps that count. Film your set, or upload one you already have. CalmArms counts every rep and checks your form on each one. A few seconds after the set you see how many reps were clean, the one thing to fix next set, and whether to add weight. Know when to add weight After every graded set you get a call: go heavier, stay here, or go lighter. Progress without guessing. Every rep checked Each rep is scored on up to five things, depending on the lift and the camera angle: joint angle, range of motion, tempo, elbow control and left-right balance. The results show which one cost you the most. What it covers 59 exercise variations: curls, tricep extensions, shoulder press, lateral raises, bench press, flys, pec deck, rows, lat pulldowns, pull-ups, squats, deadlifts and RDLs, leg extensions, leg curls, calf raises, crunches, sit-ups and hanging leg raises. Private by design Counting and grading happen on your phone. Your video never leaves it, and a set you film in the app is deleted as soon as it's graded. . See your progress Your reps, weights and grades are saved set by set, so you can watch your lifts and your form climb week to week. Start with a free set. No account needed to try it. Privacy Policy: https://calmarms.com/privacy-policy Terms of Service: https://calmarms.com/terms

Screenshots

FormLab4 screens
CalmArms4 screens

Verdict

The call

The clearest difference is ads: CalmArms at none against FormLab's shown. CalmArms also leads on iOS requirement (15.5 vs 17.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. FormLab sells 1 one-off in-app purchase and CalmArms sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

FormLab ships an update every 5 days, CalmArms every 6 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
FormLab versus CalmArms: the parameters behind the verdict, then further details
ParameterFormLabCalmArms
PriceFreeFree
Rating—5.0 (3 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—3 — better
Update frequencyEvery 5 days — betterEvery 6 days
AdsYesNo — better
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhoneiPhone, iPod — better
Requires iOS17.015.5 — better
Further details — not scored
Size6 MB239 MB
Age rating12+17+
DeveloperAcconectoArya Ika

In-app purchases

1 purchases

FormLab

One-time1
  • FormLab Pro$3.99
2 purchases

CalmArms

Subscriptions2
  • Monthly$5.991 Month
  • Yearly7 Days trial$49.991 Year

Questions

Is FormLab free?
FormLab is free to download, with in-app purchases available.
Is CalmArms free?
CalmArms is free to download, with in-app purchases available.
Do FormLab or CalmArms have ads?
FormLab shows ads; CalmArms does not.
Which is updated more often, FormLab or CalmArms?
FormLab ships an update every 5 days, and CalmArms every 6 days. Most recently, FormLab was updated on October 28, 2026 and CalmArms on October 31, 2026.

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