# UnitAi vs AppMarkers

The clearest difference is iOS requirement: AppMarkers at 16.0 against UnitAi's 18.5. On price, update cadence, 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.

UnitAi ships an update every 11 months, AppMarkers every 6 months. The most recent releases landed on October 17, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | UnitAi | AppMarkers |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 6 months** |
| Size | 1 MB | 11 MB |
| Requires iOS | 18.5 | **16.0** |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ZERONOON LIMITED](https://appshunter.io/developer/1775736649) | [松 李](https://appshunter.io/developer/1553000345) |

## What reviewers say

### UnitAi

[App page](https://appshunter.io/ios/app/unitai-storage-unit-converter/id6737280787)

**Features:** macOS Compatibility

**In-app purchases:** none


### AppMarkers

[App page](https://appshunter.io/ios/app/appmarkers/id6747897832)

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

**In-app purchases:** none


## Frequently asked questions

### Is UnitAi free?

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

### Is AppMarkers free?

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

### Do UnitAi or AppMarkers have ads?

Neither UnitAi nor AppMarkers shows ads.

### Which is updated more often, UnitAi or AppMarkers?

UnitAi ships an update every 11 months, and AppMarkers every 6 months. Most recently, UnitAi was updated on October 17, 2026 and AppMarkers on October 18, 2026.

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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.*