# 3D Shape Identifier vs UnitAi

The clearest difference is update cadence: 3D Shape Identifier at daily against UnitAi's every 11 months. 3D Shape Identifier also leads on iOS requirement (13.0 vs 18.5). On price, ads, in-app purchases and device support there is nothing between them.

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

3D Shape Identifier ships an update daily, UnitAi every 11 months. The most recent releases landed on October 11, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | 3D Shape Identifier | UnitAi |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Daily** | Every 11 months |
| Size | 2 MB | 1 MB |
| Requires iOS | **13.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fedor Derzhavin](https://appshunter.io/developer/1643699304) | [ZERONOON LIMITED](https://appshunter.io/developer/1775736649) |

## What reviewers say

### 3D Shape Identifier

[App page](https://appshunter.io/ios/app/3d-shape-identifier/id1643699302)

**Features:** macOS Compatibility

**In-app purchases:** none


### UnitAi

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 3D Shape Identifier free?

3D Shape Identifier is free to download, with no in-app purchases.

### Is UnitAi free?

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

### Do 3D Shape Identifier or UnitAi have ads?

Neither 3D Shape Identifier nor UnitAi shows ads.

### Which is updated more often, 3D Shape Identifier or UnitAi?

3D Shape Identifier ships an update daily, and UnitAi every 11 months. Most recently, 3D Shape Identifier was updated on October 11, 2026 and UnitAi on October 17, 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.*