# Knox Studio vs PrismCoach

The clearest difference is in-app purchases: Knox Studio at none against PrismCoach's 2. Knox Studio also leads on iOS requirement (14.0 vs 18.0). PrismCoach's advantage is ads (none vs shown) and update cadence (every 3 days vs every 2 months). On price and device support there is nothing between them.

Both are free to download. PrismCoach sells 2 in-app purchases, starting at $9.99 per month. Knox Studio asks for nothing beyond the download.

Knox Studio ships an update every 2 months, PrismCoach every 3 days. The most recent releases landed on October 4, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Knox Studio | PrismCoach |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 3 days** |
| Size | 123 MB | 2.2 GB |
| Requires iOS | **14.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Knox Fit LLP](https://appshunter.io/developer/1382590033) | [Synalux LLC](https://appshunter.io/developer/1895881089) |

## What reviewers say

### Knox Studio

[App page](https://appshunter.io/ios/app/knox-studio/id6467772672)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### PrismCoach

[App page](https://appshunter.io/ios/app/prismcoach/id6778001709)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PrismCoach Pro Monthly | $9.99 | per month |
| PrismCoach Pro Annual | $59.99 | per year |


## Frequently asked questions

### Is Knox Studio free?

Knox Studio is free to download, with no in-app purchases.

### Is PrismCoach free?

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

### Do Knox Studio or PrismCoach have ads?

Knox Studio shows ads; PrismCoach does not.

### Which is updated more often, Knox Studio or PrismCoach?

Knox Studio ships an update every 2 months, and PrismCoach every 3 days. Most recently, Knox Studio was updated on October 4, 2026 and PrismCoach on October 17, 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.*