# ACR e vs Mammography ARRT Prep

The clearest difference is in-app purchases: ACR e at none against Mammography ARRT Prep's 4. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Mammography ARRT Prep sells 4 in-app purchases, starting at $6.99 per 7 days. ACR e asks for nothing beyond the download.

## The numbers

| Metric | ACR e | Mammography ARRT Prep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Size | 75 MB | 25 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [The American College of Radiology](https://appshunter.io/developer/493774954) | [fly sky pty ltd](https://appshunter.io/developer/1838696534) |

## What reviewers say

### ACR e

[App page](https://appshunter.io/ios/app/acr-e-reader/id6737767123)

**Features:** macOS Compatibility

**In-app purchases:** none


### Mammography ARRT Prep

[App page](https://appshunter.io/ios/app/mammography-arrt-prep/id6779027413)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mammography Weekly | $6.99 | per 7 days |
| Mammography Monthly | $16.99 | per month |
| Mammography Yearly | $39.99 | per year |
| lifetime pro | $79.99 | one-time |


## Frequently asked questions

### Is ACR e free?

ACR e is free to download, with no in-app purchases.

### Is Mammography ARRT Prep free?

Mammography ARRT Prep is free to download, with in-app purchases available.

### Do ACR e or Mammography ARRT Prep have ads?

Neither ACR e nor Mammography ARRT Prep shows ads.

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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.*