# ExerciseRx® vs HOBSCOTCH CAT Study

The clearest difference is iOS requirement: ExerciseRx® at 14.0 against HOBSCOTCH CAT Study's 16.4. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ExerciseRx® ships an update every 6 weeks, HOBSCOTCH CAT Study every 2 months. The most recent releases landed on August 26, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | ExerciseRx® | HOBSCOTCH CAT Study |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/exerciserx/id6443440394/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 7 MB | 50 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [University Of Washington](https://appshunter.io/developer/328228464) | [Edward Camp](https://appshunter.io/developer/1480278901) |

## What reviewers say

### ExerciseRx®

[App page](https://appshunter.io/ios/app/exerciserx/id6443440394)

This platform helps users increase physical activity by tailoring goals, identifying barriers, and providing motivational support. It connects users with their healthcare team and tracks physical activity patterns for a provider dashboard. An activation code is currently required.

**Highlights:** Tailored physical activity goals, Identification of barriers and facilitators, Motivational nudges, Connection to healthcare team, Provider dashboard integration, Physical activity pattern tracking

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

**In-app purchases:** none


### HOBSCOTCH CAT Study

[App page](https://appshunter.io/ios/app/hobscotch-cat-study/id6741024339)

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

**In-app purchases:** none


## Frequently asked questions

### Is ExerciseRx® free?

ExerciseRx® is free to download, with no in-app purchases.

### Is HOBSCOTCH CAT Study free?

HOBSCOTCH CAT Study is free to download, with no in-app purchases.

### Do ExerciseRx® or HOBSCOTCH CAT Study have ads?

Neither ExerciseRx® nor HOBSCOTCH CAT Study shows ads.

### Which is updated more often, ExerciseRx® or HOBSCOTCH CAT Study?

ExerciseRx® ships an update every 6 weeks, and HOBSCOTCH CAT Study every 2 months. Most recently, ExerciseRx® was updated on August 26, 2026 and HOBSCOTCH CAT Study on September 22, 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.*