# RADii Viewer vs Tertiary Markdown

The clearest difference is device support: RADii Viewer at 4 against Tertiary Markdown's 2. RADii Viewer also leads on iOS requirement (15.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | RADii Viewer | Tertiary Markdown |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Size | 129 MB | 2 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Lee](https://appshunter.io/developer/1505307948) | [Alfred Ang](https://appshunter.io/developer/1880940227) |

## What reviewers say

### RADii Viewer

[App page](https://appshunter.io/ios/app/radii-viewer/id1505325031)

**In-app purchases:** none


### Tertiary Markdown

[App page](https://appshunter.io/ios/app/tertiary-markdown/id6782659815)

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

**In-app purchases:** none


## Frequently asked questions

### Is RADii Viewer free?

RADii Viewer is free to download, with no in-app purchases.

### Is Tertiary Markdown free?

Tertiary Markdown is free to download, with no in-app purchases.

### Do RADii Viewer or Tertiary Markdown have ads?

Neither RADii Viewer nor Tertiary Markdown 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.*