# FormLab vs CalmArms

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.

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.

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.

## The numbers

| Metric | FormLab | CalmArms |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/calmarms-ai-form-and-rep-coach/id6760679556/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 6 days |
| Monetization | — | Free with in-app purchases |
| Size | 6 MB | 239 MB |
| Requires iOS | 17.0 | **15.5** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [Acconecto](https://appshunter.io/developer/1553425044) | [Arya Ika](https://appshunter.io/developer/1885688580) |

## What reviewers say

### FormLab

[App page](https://appshunter.io/ios/app/formlab/id6758761079)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FormLab Pro | $3.99 | one-time |


### CalmArms

[App page](https://appshunter.io/ios/app/calmarms-ai-form-and-rep-coach/id6760679556)

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:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $5.99 | per month |
| Yearly | $49.99 | per year |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*