# PDF Noted vs Omphalis

The clearest difference is in-app purchases: Omphalis at none against PDF Noted's 1. Omphalis also leads on iOS requirement (15.1 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. PDF Noted sells 1 one-off in-app purchase. Omphalis asks for nothing beyond the download.

## The numbers

| Metric | PDF Noted | Omphalis |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 2 days |
| Size | 2 MB | 36 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ReferencesOnTap](https://appshunter.io/developer/301316543) | [Voxiven, LLC](https://appshunter.io/developer/1822383623) |

## What reviewers say

### PDF Noted

[App page](https://appshunter.io/ios/app/pdf-noted/id6744330375)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $7.99 | one-time |


### Omphalis

[App page](https://appshunter.io/ios/app/omphalis/id6788093850)

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

**In-app purchases:** none


## Frequently asked questions

### Is PDF Noted free?

PDF Noted is free to download, with in-app purchases available.

### Is Omphalis free?

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

### Do PDF Noted or Omphalis have ads?

Neither PDF Noted nor Omphalis 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.*