# Unit Ⅽonverter vs US Unit Converter

The clearest difference is update cadence: Unit Ⅽonverter at every 3 weeks against US Unit Converter's every 6 months. US Unit Converter's advantage is review sentiment (44% vs 25%) and iOS requirement (15.6 vs 18.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Unit Ⅽonverter sells 2 in-app purchases, starting at $1.99 per month and US Unit Converter sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Unit Ⅽonverter ships an update every 3 weeks, US Unit Converter every 6 months. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Unit Ⅽonverter | US Unit Converter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (110 ratings)](https://appshunter.io/ios/app/us-unit-converter/id1577905442/reviews)** |
| Number of ratings | — | **110** |
| Positive reviews | 25.0% of reviews | **44.4% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Every 6 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 8 MB | 6 MB |
| Requires iOS | 18.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Polymath Company Limited](https://appshunter.io/developer/1072350394) | [Kei Suefuji](https://appshunter.io/developer/1388335881) |

## What reviewers say

### Unit Ⅽonverter

[App page](https://appshunter.io/ios/app/unit-onverter/id1499479393)

Easily convert between over 1600 units of measurement across 75 categories, including custom units and complex calculations. Supports offline mode and offers a convenient history of your conversions.

**Highlights:** Convert over 1600 units in 75 categories, Supports custom units and combinations, Calculator for expression input, View conversion histories, Add favorite units, Offline mode, Copy and share results

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UnitConverterPremiumMonthly | $1.99 | per month |
| UnitConverterPremiumLifeTime | $33.99 | one-time |


### US Unit Converter

[App page](https://appshunter.io/ios/app/us-unit-converter/id1577905442)

Easily convert between US customary units and the International System of Units for various measurements like length, weight, area, volume, and temperature. Access conversion history and remove ads with a premium upgrade.

**Highlights:** Length conversion, Weight conversion, Area conversion, Liquid volume conversion, Temperature conversion, Conversion history, Ad-free option

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PREMIUM | $3.99 | one-time |


## Frequently asked questions

### Is Unit Ⅽonverter free?

Unit Ⅽonverter is free to download, with in-app purchases available.

### Is US Unit Converter free?

US Unit Converter is free to download, with in-app purchases available.

### Do Unit Ⅽonverter or US Unit Converter have ads?

Both Unit Ⅽonverter and US Unit Converter show ads.

### Which is updated more often, Unit Ⅽonverter or US Unit Converter?

Unit Ⅽonverter ships an update every 3 weeks, and US Unit Converter every 6 months. Most recently, Unit Ⅽonverter was updated on November 3, 2026 and US Unit Converter on November 7, 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.*