# Unit Converter vs UnitFlip

The clearest difference is in-app purchases: Unit Converter at none against UnitFlip's 1. UnitFlip's advantage is ads (none vs shown) and update cadence (every 8 days vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. UnitFlip sells 1 one-off in-app purchase. Unit Converter asks for nothing beyond the download.

Unit Converter ships an update every 2 months, UnitFlip every 8 days. The most recent releases landed on October 7, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Unit Converter | UnitFlip |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 8 days** |
| Size | 11 MB | 2 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [MITSUKO MARGOT KUBOTA ONO](https://appshunter.io/developer/1799524637) | [TheChosenVictor LLC](https://appshunter.io/developer/1884403150) |

## What reviewers say

### Unit Converter

[App page](https://appshunter.io/ios/app/unit-converter-us-units/id6760955491)

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

**In-app purchases:** none


### UnitFlip

[App page](https://appshunter.io/ios/app/unitflip-unit-converter/id6762089174)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $2.99 | one-time |


## Frequently asked questions

### Is Unit Converter free?

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

### Is UnitFlip free?

UnitFlip is free to download, with in-app purchases available.

### Do Unit Converter or UnitFlip have ads?

Unit Converter shows ads; UnitFlip does not.

### Which is updated more often, Unit Converter or UnitFlip?

Unit Converter ships an update every 2 months, and UnitFlip every 8 days. Most recently, Unit Converter was updated on October 7, 2026 and UnitFlip on October 25, 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.*