# CATALYST for Learning vs Archer Medical Exam Prep

The clearest difference is in-app purchases: CATALYST for Learning at none against Archer Medical Exam Prep's 10. CATALYST for Learning also leads on iOS requirement (10.0 vs 15.6). Archer Medical Exam Prep's advantage is update cadence (weekly vs every 48 months). On price, ads and device support there is nothing between them.

Both are free to download. Archer Medical Exam Prep sells 10 in-app purchases, starting at $104.99 per month. CATALYST for Learning asks for nothing beyond the download.

CATALYST for Learning ships an update every 48 months, Archer Medical Exam Prep weekly. The most recent releases landed on October 7, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | CATALYST for Learning | Archer Medical Exam Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (45 ratings)](https://appshunter.io/ios/app/archer-medical-exam-prep/id1492019748/reviews)** |
| Number of ratings | — | **45** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 48 months | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 4 MB | 105 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Internet Testing Systems (ITS)](https://appshunter.io/developer/546817214) | [Archer Review](https://appshunter.io/developer/1492017476) |

## What reviewers say

### CATALYST for Learning

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

**In-app purchases:** none


### Archer Medical Exam Prep

[App page](https://appshunter.io/ios/app/archer-medical-exam-prep/id1492019748)

Prepare for medical licensing exams with a comprehensive platform offering question banks, video lessons, and structured notes. Master key concepts and build confidence for USMLE, COMLEX, and PANCE/PANRE exams through targeted practice and clinical learning pathways.

**Highlights:** High-yield question banks, Whiteboard video lessons, Structured study notes, Clinical learning pathways, Performance analytics, Rotation roadmaps

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| USMLE MD - 30 Days | $104.99 | per month |
| COMLEX DO - 30 Days | $104.99 | per month |
| USMLE MD - 90 Days | $229.00 | per 3 months |
| COMLEX DO - 90 Days | $229.99 | per 3 months |
| USMLE MD - 180 Days | $369.99 | per 6 months |
| COMLEX DO - 180 Days | $369.99 | per 6 months |
| COMLEX Level 2 - Annual | $559.99 | per year |
| PANCE - Annual | $559.99 | per year |
| USMLE MD - Annual | $559.99 | per year |
| COMLEX DO - Annual | $559.99 | per year |


## Frequently asked questions

### Is CATALYST for Learning free?

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

### Is Archer Medical Exam Prep free?

Archer Medical Exam Prep is free to download, with in-app purchases available.

### Do CATALYST for Learning or Archer Medical Exam Prep have ads?

Neither CATALYST for Learning nor Archer Medical Exam Prep shows ads.

### Which is updated more often, CATALYST for Learning or Archer Medical Exam Prep?

CATALYST for Learning ships an update every 48 months, and Archer Medical Exam Prep weekly. Most recently, CATALYST for Learning was updated on October 7, 2026 and Archer Medical Exam Prep on October 23, 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.*