# WaitIO vs OmniUnits

The clearest difference is in-app purchases: WaitIO at none against OmniUnits's 3. On price and iOS requirement there is nothing between them.

Both are free to download. OmniUnits sells 3 one-off in-app purchases. WaitIO asks for nothing beyond the download.

## The numbers

| Metric | WaitIO | OmniUnits |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/omniunits-unit-converter/id6757780882/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | — |
| Update frequency | Every 3 weeks | — |
| Monetization | — | Freemium |
| Size | 1 MB | 9 MB |
| Requires iOS | **17.5** | 18.0 |
| Devices | **iPhone** | — |
| Age rating | 4+ | 4+ |
| Developer | [Nerdz](https://appshunter.io/developer/1530513478) | [Florian Lenk](https://appshunter.io/developer/1581835654) |

## What reviewers say

### WaitIO

[App page](https://appshunter.io/ios/app/waitio/id6756619595)

**Features:** macOS Compatibility

**In-app purchases:** none


### OmniUnits

[App page](https://appshunter.io/ios/app/omniunits-unit-converter/id6757780882)

This app streamlines unit conversions with custom presets, a formula editor, and a widget-first approach. It supports over 35 unit categories and offers professional precision for calculations. Ideal for professionals and students needing quick, structured conversions.

**Highlights:** Customizable conversion presets, Built-in formula editor, Widget-first home screen access, 35+ unit categories, Professional precision controls, Conversion history

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OmniUnits Plus | $1.99 | one-time |
| OmniUnits Pro | $2.99 | one-time |
| OmniUnits Pro | $3.99 | one-time |


## Frequently asked questions

### Is WaitIO free?

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

### Is OmniUnits free?

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

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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.*