# UnitAi vs Insterm

The clearest difference is ads: UnitAi at none against Insterm's shown. Insterm's advantage is update cadence (every 5 months vs every 11 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.

UnitAi ships an update every 11 months, Insterm every 5 months. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | UnitAi | Insterm |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 11 months | **Every 5 months** |
| Size | 1 MB | 10 MB |
| Requires iOS | 18.5 | **17.0** |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ZERONOON LIMITED](https://appshunter.io/developer/1775736649) | [Yusuke Mori](https://appshunter.io/developer/1662278979) |

## What reviewers say

### UnitAi

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Insterm

[App page](https://appshunter.io/ios/app/insterm/id6742595334)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is UnitAi free?

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

### Is Insterm free?

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

### Do UnitAi or Insterm have ads?

Insterm shows ads; UnitAi does not.

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

UnitAi ships an update every 11 months, and Insterm every 5 months. Most recently, UnitAi was updated on October 27, 2026 and Insterm on October 28, 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.*