# Coach's Eye vs Diamond Chalk

The clearest difference is update cadence: Coach's Eye at every 9 days against Diamond Chalk's every 3 weeks. Diamond Chalk's advantage is iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Coach's Eye sells 7 in-app purchases, starting at $6.99 per month and Diamond Chalk sells 4 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Coach's Eye ships an update every 9 days, Diamond Chalk every 3 weeks. The most recent releases landed on November 11, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Coach's Eye | Diamond Chalk |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (31 ratings)](https://appshunter.io/ios/app/coachs-eye/id6761056366/reviews)** | — |
| Number of ratings | **31** | — |
| Positive reviews | 30.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Monetization | Freemium | — |
| Size | 26 MB | 14 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | +4 | 4+ |
| Developer | [Gym Art Inc.](https://appshunter.io/developer/1579431415) | [RYAN LEE HOUSE](https://appshunter.io/developer/1870067298) |

## What reviewers say

### Coach's Eye

[App page](https://appshunter.io/ios/app/coachs-eye/id6761056366)

Transform your mobile device into a powerful video analysis tool for athletes. Record or import footage, then meticulously break it down frame by frame with professional annotation features. Organize your library and enhance your training with detailed visual feedback.

**Highlights:** Frame-by-frame video playback, Adjustable playback speed, Pinch-to-zoom functionality, Drawing and measurement tools, Video library organization, Import and record footage

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Élite | $6.99 | per month |
| Unlimited | $9.99 | per month |
| Elite | $34.99 | per year |
| Elite | $64.99 | per year |
| Élite | $64.99 | per year |
| 1 year 40% off | $64.99 | per year |
| Unlimited | $99.99 | per year |


### Diamond Chalk

[App page](https://appshunter.io/ios/app/diamond-chalk/id6809303789)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coach — Monthly | $9.99 | per month |
| Diamond Chalk Pro | $19.99 | per month |
| Coach — Yearly | $79.99 | per year |
| Diamond Chalk Pro | $159.99 | per year |


## Frequently asked questions

### Is Coach's Eye free?

Coach's Eye is free to download, with in-app purchases available.

### Is Diamond Chalk free?

Diamond Chalk is free to download, with in-app purchases available.

### Do Coach's Eye or Diamond Chalk have ads?

Neither Coach's Eye nor Diamond Chalk shows ads.

### Which is updated more often, Coach's Eye or Diamond Chalk?

Coach's Eye ships an update every 9 days, and Diamond Chalk every 3 weeks. Most recently, Coach's Eye was updated on November 11, 2026 and Diamond Chalk on October 31, 2026.

---

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