# Convert vs Unit Converter Simple

The clearest difference is rating: Convert at 4.7 against Unit Converter Simple's 4.0. Convert also leads on ratings volume (126 vs 1) and update cadence (every 3 months vs every 10 months). Unit Converter Simple's advantage is in-app purchases (none vs 2). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Convert sells 2 in-app purchases, starting at $0.99 per 6 months. Unit Converter Simple asks for nothing beyond the download.

Convert holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Convert has 126 ratings behind it against 1, so its average is the more settled of the two.

Convert ships an update every 3 months, Unit Converter Simple every 10 months. Both last shipped on October 29, 2026.

## The numbers

| Metric | Convert | Unit Converter Simple |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (126 ratings)](https://appshunter.io/ios/app/convert-unit-and-currency/id884044389/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/unit-converter-simple/id1531846614/reviews) |
| Number of ratings | **126** | 1 |
| Positive reviews | 69.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 3 months** | Every 10 months |
| Monetization | Freemium | **Ad-supported** |
| Size | 39 MB | 18 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Raphael Odermatt](https://appshunter.io/developer/403027529) | [Kouji Yamauchi](https://appshunter.io/developer/1519365107) |

## What reviewers say

### Convert

[App page](https://appshunter.io/ios/app/convert-unit-and-currency/id884044389)

Easily convert hundreds of physical units and dimensions with this powerful tool. It also includes a currency converter with daily updated exchange rates for over 130 countries and is available on Apple Watch.

**Highlights:** Unit conversion for 398 units, Currency conversion with daily rates, Integrated calculator, Apple Watch support, History charts for currencies, Copy & Paste functionality

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advanced Features | $0.99 | per 6 months |
| Advanced Features | $1.99 | one-time |


### Unit Converter Simple

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

Easily convert between various units of measurement for length, weight, volume, and more. View converted values in a convenient list and customize the display to show only the units you need. Supports a wide range of common and specialized units.

**Highlights:** Converts length, weight, area, volume, and more, Displays converted values in a list, Customizable unit visibility, Supports a wide variety of units, Free to use

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Convert free?

Convert 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, Convert or Unit Converter Simple?

Convert is rated higher. Convert averages 4.7 out of 5 from 126 ratings, while Unit Converter Simple averages 4.0 from 1 ratings.

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

Both Convert and Unit Converter Simple show ads.

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

Convert ships an update every 3 months, and Unit Converter Simple every 10 months. Most recently, Convert was updated on October 29, 2026 and Unit Converter Simple on October 29, 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.*