# RADS Guide vs cfDNA PPV Calculator

The clearest difference is in-app purchases: cfDNA PPV Calculator at none against RADS Guide's 2. RADS Guide's advantage is iOS requirement (16.6 vs 18.4). On price, ads and device support there is nothing between them.

Both are free to download. RADS Guide sells 2 in-app purchases, starting at $3.99 per month. cfDNA PPV Calculator asks for nothing beyond the download.

## The numbers

| Metric | RADS Guide | cfDNA PPV Calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Size | 116 MB | 1 MB |
| Requires iOS | **16.6** | 18.4 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [RADIOLOGiQ, LLC](https://appshunter.io/developer/519524135) | [David Deschamps](https://appshunter.io/developer/959395502) |

## What reviewers say

### RADS Guide

[App page](https://appshunter.io/ios/app/rads-guide/id6757205130)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1-Month Subscription | $3.99 | per month |
| 12-Month Subscription | $29.99 | per year |


### cfDNA PPV Calculator

[App page](https://appshunter.io/ios/app/cfdna-ppv-calculator/id6759178792)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RADS Guide free?

RADS Guide is free to download, with in-app purchases available.

### Is cfDNA PPV Calculator free?

cfDNA PPV Calculator is free to download, with no in-app purchases.

### Do RADS Guide or cfDNA PPV Calculator have ads?

Neither RADS Guide nor cfDNA PPV Calculator 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.*