# Units vs Unit Converter Simple

The clearest difference is rating: Units at 4.9 against Unit Converter Simple's 4.0. Units also leads on ads (none vs shown) and update cadence (every 5 weeks vs every 10 months). Unit Converter Simple's advantage is in-app purchases (none vs 3) and iOS requirement (13.0 vs 15.0). On price and device support there is nothing between them.

Both are free to download. Units sells 3 in-app purchases, starting at $0.99 per month. Unit Converter Simple asks for nothing beyond the download.

Units holds the better App Store score, 4.9 against 4.0. That said, the two scores are not equally well evidenced: Units has 262 ratings behind it against 1, so its average is the more settled of the two.

Units ships an update every 5 weeks, Unit Converter Simple every 10 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Units | Unit Converter Simple |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (262 ratings)](https://appshunter.io/ios/app/units-unit-converter/id1527329982/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/unit-converter-simple/id1531846614/reviews) |
| Number of ratings | **262** | 1 |
| Positive reviews | 45.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 5 weeks** | Every 10 months |
| Monetization | Free with in-app purchases | — |
| Size | 3 MB | 18 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andreas Maier](https://appshunter.io/developer/454364359) | [Kouji Yamauchi](https://appshunter.io/developer/1519365107) |

## What reviewers say

### Units

[App page](https://appshunter.io/ios/app/units-unit-converter/id1527329982)

Easily convert between a wide range of measurement units and currencies. Features a clear and simple interface for quick conversions of length, mass, volume, speed, and more. Supports popular currencies and common units for everyday use.

**Highlights:** Extensive unit conversions, Multiple currency support, Easy and clear handling, Converts length, mass, volume, Supports speed, area, pressure, Converts time and temperature

**Features:** Family Sharing, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Yearly | $4.99 | per year |
| One time purchase | $9.99 | one-time |


### Unit Converter Simple

[App page](https://appshunter.io/ios/app/unit-converter-simple/id1531846614)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Units free?

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

### Is Unit Converter Simple free?

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

### Which has better reviews, Units or Unit Converter Simple?

Units is rated higher. Units averages 4.9 out of 5 from 262 ratings, while Unit Converter Simple averages 4.0 from 1 ratings.

### Do Units or Unit Converter Simple have ads?

Unit Converter Simple shows ads; Units does not.

### Which is updated more often, Units or Unit Converter Simple?

Units ships an update every 5 weeks, and Unit Converter Simple every 10 months. Most recently, Units was updated on October 23, 2026 and Unit Converter Simple on October 24, 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.*