# ConvertALL Unit Converter vs Air Ruler

The clearest difference is price: ConvertALL Unit Converter at Free against Air Ruler's $0.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

ConvertALL Unit Converter is free to download; Air Ruler costs $0.99 up front. ConvertALL Unit Converter sells 1 one-off in-app purchase and Air Ruler sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | ConvertALL Unit Converter | Air Ruler |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | — |
| Size | 24 MB | 7 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [AYLIN BICEN](https://appshunter.io/developer/1839275591) | [乐祥 胡](https://appshunter.io/developer/1572365721) |

## What reviewers say

### ConvertALL Unit Converter

[App page](https://appshunter.io/ios/app/convertall-unit-converter/id6753229100)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| converterpro | $4.99 | one-time |


### Air Ruler

[App page](https://appshunter.io/ios/app/air-ruler-objects-measure/id6763083628)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ruler Premium - 30days | $2.99 | per month |
| Ruler premium - yearly | $8.99 | per year |
| Ruler Premium - lifetime | $29.99 | one-time |


## Frequently asked questions

### Is ConvertALL Unit Converter free?

ConvertALL Unit Converter is free to download, with in-app purchases available.

### Is Air Ruler free?

Air Ruler costs $0.99, and also offers in-app purchases.

### Do ConvertALL Unit Converter or Air Ruler have ads?

Neither ConvertALL Unit Converter nor Air Ruler 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.*