# CONVERT UNITS vs Unit Converter and Conversion

The clearest difference is in-app purchases: CONVERT UNITS at none against Unit Converter and Conversion's 1. CONVERT UNITS also leads on update cadence (every 6 weeks vs every 10 months) and ratings volume (1.4K vs 48). On price, review sentiment, ads and device support there is nothing between them.

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

CONVERT UNITS holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: CONVERT UNITS has 1.4K ratings behind it against 48, so its average is the more settled of the two. Written reviews complicate that: 75% of CONVERT UNITS's written reviews are positive against 82% of Unit Converter and Conversion's, so the app with the better star average is not the one people write more warmly about.

CONVERT UNITS ships an update every 6 weeks, Unit Converter and Conversion every 10 months. The most recent releases landed on September 25, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | CONVERT UNITS | Unit Converter and Conversion |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.4K ratings)](https://appshunter.io/ios/app/convert-units/id1114969241/reviews)** | [4.5 (48 ratings)](https://appshunter.io/ios/app/unit-converter-and-conversion/id1350107532/reviews) |
| Number of ratings | **1.4K** | 48 |
| Positive reviews | 75.0% of reviews | **81.8% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 6 weeks** | Every 10 months |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 21 MB | 42 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [Adysseus](https://appshunter.io/developer/447444997) | [Asad Ahsan](https://appshunter.io/developer/1326954499) |

## What reviewers say

### CONVERT UNITS

[App page](https://appshunter.io/ios/app/convert-units/id1114969241)

Easily convert between various units of measurement including length, weight, temperature, and currency. Features automatic currency updates, a vast selection of currencies, and customizable display options for accuracy and rounding. Optimized for multitasking on iPad and offers a beautiful dark design.

**Highlights:** Converts length, weight, speed, area, time, pressure, volume, power, fuel, temperature, data, and currency, Automatic currency updates, 160 currencies available, Multitasking enabled for iPad, Alphabetical quick links for units, Customizable startup categories, Adjustable accuracy and rounding

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

**In-app purchases:** none

**What reviewers like**

- 👍 Quick & easy to use
- 👍 Ease of use
- 👍 Simple and easy to use
- 👍 Well thought out and easy to use
- 👍 Excellent and very reliable

**What reviewers complain about**

- 🐛 Ads obstruct use
- 🐛 Subscription required to remove ads
- 🐛 Currency conversion not working

**Reported bugs**

- App got stuck, required uninstall/reinstall to fix
- Navigation issues, unable to get back to home page

**Requested features**

- Option to convert between functions (length to volume)
- Remember last conversion settings for each category


### Unit Converter and Conversion

[App page](https://appshunter.io/ios/app/unit-converter-and-conversion/id1350107532)

This app offers a user-friendly interface for converting units across more than 40 categories, including length, weight, volume, and digital storage. It works offline and saves conversion history for future reference. Ideal for students and professionals needing quick and accurate conversions.

**Highlights:** Over 40 conversion categories, Offline functionality, Conversion history saving, User-friendly interface, Supports length, weight, volume, and more, Elegant graphics

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unit Converter Pro | $4.99 | one-time |


## Frequently asked questions

### Is CONVERT UNITS free?

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

### Is Unit Converter and Conversion free?

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

### Which has better reviews, CONVERT UNITS or Unit Converter and Conversion?

CONVERT UNITS is rated higher. CONVERT UNITS averages 4.7 out of 5 from 1.4K ratings, while Unit Converter and Conversion averages 4.5 from 48 ratings.

### Do CONVERT UNITS or Unit Converter and Conversion have ads?

Both CONVERT UNITS and Unit Converter and Conversion show ads.

### Which is updated more often, CONVERT UNITS or Unit Converter and Conversion?

CONVERT UNITS ships an update every 6 weeks, and Unit Converter and Conversion every 10 months. Most recently, CONVERT UNITS was updated on September 25, 2026 and Unit Converter and Conversion on September 22, 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.*