# CATALYST for Learning vs Sketchy Learning

The clearest difference is in-app purchases: CATALYST for Learning at none against Sketchy Learning's 4. CATALYST for Learning also leads on ads (none vs shown) and iOS requirement (10.0 vs 15.1). Sketchy Learning's advantage is update cadence (every 3 weeks vs every 48 months). On price and device support there is nothing between them.

Both are free to download. Sketchy Learning sells 4 in-app purchases, starting at $289.99 per year. CATALYST for Learning asks for nothing beyond the download.

CATALYST for Learning ships an update every 48 months, Sketchy Learning every 3 weeks. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | CATALYST for Learning | Sketchy Learning |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (32 ratings)](https://appshunter.io/ios/app/sketchy-learning/id6502776327/reviews)** |
| Number of ratings | — | **32** |
| Positive reviews | — | 52.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 48 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 4 MB | 68 MB |
| Requires iOS | **10.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Internet Testing Systems (ITS)](https://appshunter.io/developer/546817214) | [Sketchy Group, LLC](https://appshunter.io/developer/1247590397) |

## What reviewers say

### CATALYST for Learning

[App page](https://appshunter.io/ios/app/catalyst-for-learning/id1469065092)

**In-app purchases:** none


### Sketchy Learning

[App page](https://appshunter.io/ios/app/sketchy-learning/id6502776327)

This app transforms complex medical subjects into memorable visual lessons and interactive patient scenarios. It's designed to help students learn faster, master exams, and build clinical confidence. Engage with high-yield content and practice real-world reasoning.

**Highlights:** Visual lessons for memorization, Interactive patient case simulations, High-yield exam content, Quizzes and custom tests, Customizable playlists, Mobile-friendly learning

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sketchy NP 12 month | $289.99 | per year |
| MCAT Science Review 12 month | $399.99 | per year |
| Sketchy PA 12 month | $399.99 | per year |
| Medical 12 month | $459.99 | per year |

**What reviewers like**

- 👍 Great for visual learners
- 👍 Makes learning fun and memorable
- 👍 High-yield material relevant to exams
- 👍 Excellent for retaining information
- 👍 Valuable for medical students

**What reviewers complain about**

- 🐛 Videos stop in landscape orientation
- 🐛 Can't give feedback on mobile app
- 🐛 Closed captioning settings don't save
- 🐛 Zoom/pan not available in landscape mode
- 🐛 App crashes frequently

**Reported bugs**

- Video stops playing and closes in landscape orientation
- Keyboard covers submit button when giving feedback on mobile app
- Closed captioning settings do not save
- App crashes when videos are full-screened and phone is turned sideways
- App crashes frequently

**Requested features**

- Ability to create customized tests in the app
- Save closed captioning settings
- Improve zoom and pan functionality in landscape mode
- Bring back bookmarking feature
- Allow scrolling on the side panel within video courses


## Frequently asked questions

### Is CATALYST for Learning free?

CATALYST for Learning is free to download, with no in-app purchases.

### Is Sketchy Learning free?

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

### Do CATALYST for Learning or Sketchy Learning have ads?

Sketchy Learning shows ads; CATALYST for Learning does not.

### Which is updated more often, CATALYST for Learning or Sketchy Learning?

CATALYST for Learning ships an update every 48 months, and Sketchy Learning every 3 weeks. Most recently, CATALYST for Learning was updated on October 7, 2026 and Sketchy Learning on October 13, 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.*