# RD Exam Prep vs CDR RD Exam Prep 2026

The clearest difference is ads: RD Exam Prep at none against CDR RD Exam Prep 2026's shown. CDR RD Exam Prep 2026's advantage is iOS requirement (15.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. RD Exam Prep sells 3 in-app purchases, starting at $9.99 per month and CDR RD Exam Prep 2026 sells 3 in-app purchases, starting at $29.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | RD Exam Prep | CDR RD Exam Prep 2026 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | — |
| Size | 5 MB | 48 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [MD Shahariar Nazim Joy](https://appshunter.io/developer/1893961943) | [Apperture Limited](https://appshunter.io/developer/1727867515) |

## What reviewers say

### RD Exam Prep

[App page](https://appshunter.io/ios/app/rd-exam-prep-dietitian-cdr/id6790695801)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Access | $9.99 | per month |
| Annual Access | $49.99 | per year |
| Lifetime Access | $99.99 | one-time |


### CDR RD Exam Prep 2026

[App page](https://appshunter.io/ios/app/cdr-rd-exam-prep-2026/id6798265607)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription | $29.99 | per month |
| Premium Subscription | $29.99 | per month |
| Premium Subscription | $118.99 | per year |


## Frequently asked questions

### Is RD Exam Prep free?

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

### Is CDR RD Exam Prep 2026 free?

CDR RD Exam Prep 2026 is free to download, with in-app purchases available.

### Do RD Exam Prep or CDR RD Exam Prep 2026 have ads?

CDR RD Exam Prep 2026 shows ads; RD Exam Prep does not.

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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.*