# Rad Tech Audio vs Mammography Prep for ARRT

The clearest difference is price: Mammography Prep for ARRT at Free against Rad Tech Audio's $107.99. Mammography Prep for ARRT also leads on update cadence (every 3 months vs every 39 months). Rad Tech Audio's advantage is in-app purchases (none vs 4) and chart position (#200 vs unranked). On ads, device support and iOS requirement there is nothing between them.

Mammography Prep for ARRT is free to download; Rad Tech Audio costs $107.99 up front. Mammography Prep for ARRT sells 4 in-app purchases, starting at $6.99 per 7 days. Rad Tech Audio asks for nothing beyond the download.

Rad Tech Audio ships an update every 39 months, Mammography Prep for ARRT every 3 months. The most recent releases landed on October 15, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Rad Tech Audio | Mammography Prep for ARRT |
| --- | --- | --- |
| Price | $107.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 3 months** |
| Best chart rank | **#200** | — |
| Size | 214 MB | 24 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [RTS Publishing Co Inc](https://appshunter.io/developer/604916069) | [FLY SKY PTY LTD](https://appshunter.io/developer/1838696534) |

## What reviewers say

### Rad Tech Audio

[App page](https://appshunter.io/ios/app/rad-tech-audio/id6444367028)

**Currently charting:** #200 Top Paid · Education (US App Store)

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

**In-app purchases:** none


### Mammography Prep for ARRT

[App page](https://appshunter.io/ios/app/mammography-prep-for-arrt/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 Rad Tech Audio free?

Rad Tech Audio costs $107.99, with no in-app purchases.

### Is Mammography Prep for ARRT free?

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

### Do Rad Tech Audio or Mammography Prep for ARRT have ads?

Neither Rad Tech Audio nor Mammography Prep for ARRT shows ads.

### Which is updated more often, Rad Tech Audio or Mammography Prep for ARRT?

Rad Tech Audio ships an update every 39 months, and Mammography Prep for ARRT every 3 months. Most recently, Rad Tech Audio was updated on October 15, 2026 and Mammography Prep for ARRT on October 9, 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.*