# iNAHO Ei vs Universal Unit Converter!

The clearest difference is ads: iNAHO Ei at none against Universal Unit Converter!'s shown. Universal Unit Converter!'s advantage is update cadence (every 8 days vs every 3 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

iNAHO Ei ships an update every 3 months, Universal Unit Converter! every 8 days. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | iNAHO Ei | Universal Unit Converter! |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 8 days** |
| Size | 21 MB | 23 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ART JAPAN CO., LTD.](https://appshunter.io/developer/1447589517) | [Taek Oh](https://appshunter.io/developer/1616205954) |

## What reviewers say

### iNAHO Ei

[App page](https://appshunter.io/ios/app/inaho-ei-lock/id1658259655)

**Features:** macOS Compatibility

**In-app purchases:** none


### Universal Unit Converter!

[App page](https://appshunter.io/ios/app/universal-unit-converter/id6785926049)

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

**In-app purchases:** none


## Frequently asked questions

### Is iNAHO Ei free?

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

### Is Universal Unit Converter! free?

Universal Unit Converter! is free to download, with no in-app purchases.

### Do iNAHO Ei or Universal Unit Converter! have ads?

Universal Unit Converter! shows ads; iNAHO Ei does not.

### Which is updated more often, iNAHO Ei or Universal Unit Converter!?

iNAHO Ei ships an update every 3 months, and Universal Unit Converter! every 8 days. Most recently, iNAHO Ei was updated on October 27, 2026 and Universal Unit Converter! on October 31, 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.*