# Conversion Calculator Units vs Unit Converter

The clearest difference is in-app purchases: Unit Converter at none against Conversion Calculator Units's 1. Unit Converter also leads on ads (none vs shown) and update cadence (weekly vs every 2 months). Conversion Calculator Units's advantage is ratings volume (5K vs 18) and device support (3 vs 1). On price, rating and review sentiment there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.7 for Conversion Calculator Units against 4.9 for Unit Converter. That said, the two scores are not equally well evidenced: Conversion Calculator Units has 5K ratings behind it against 18, so its average is the more settled of the two. Written reviews are what separate them: 82% of Conversion Calculator Units's written reviews are positive against 90% of Unit Converter's.

Conversion Calculator Units ships an update every 2 months, Unit Converter weekly. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Conversion Calculator Units | Unit Converter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (5K ratings)](https://appshunter.io/ios/app/conversion-calculator-units/id727632233/reviews) | **[4.9 (18 ratings)](https://appshunter.io/ios/app/unit-converter-scientific/id6692634387/reviews)** |
| Number of ratings | **5K** | 18 |
| Positive reviews | 82.1% of reviews | **90.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 41 MB | 4 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [RV AppStudios LLC](https://appshunter.io/developer/340181308) | [Ahmet Burak Albayrak](https://appshunter.io/developer/1769045837) |

## What reviewers say

### Conversion Calculator Units

[App page](https://appshunter.io/ios/app/conversion-calculator-units/id727632233)

This app offers a simple and powerful way to convert between over 140 units across 12 categories. Easily switch between units, customize your experience with themes, and share your results.

**Highlights:** Converts over 140 units, Supports 12 conversion categories, Customizable themes, Drag and set unit positions, Add units to favorites, Share converted units via email

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |

**What reviewers like**

- 👍 User-friendly
- 🚀 Easy to use
- 💡 Helpful for learning metric system
- 👍 Great for conversions
- 👍 Intuitive interface

**What reviewers complain about**

- 🐛 Ads disrupt usage
- 🐛 Difficult to change units
- 🐛 Lacks portrait mode
- 🐛 Upside-down orientation issues
- 🐛 Cluttered UI design

**Reported bugs**

- Ads not removed after purchase
- Incorrect unit conversions

**Requested features**

- Add pressure conversion units
- Include a basic calculator function
- Implement multi-language support
- Allow customization of unit order


### Unit Converter

[App page](https://appshunter.io/ios/app/unit-converter-scientific/id6692634387)

Easily perform instant unit conversions across a vast array of categories, from engineering to everyday life. Features include dark mode, favorites, and dual language support for enhanced usability. Ideal for scientists, engineers, students, and anyone needing quick, accurate conversions.

**Highlights:** Extensive conversion categories, Dark mode for night use, Favorite frequently used conversions, Dual language support, Offline functionality, User feedback option

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

**In-app purchases:** none


## Frequently asked questions

### Is Conversion Calculator Units free?

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

### Is Unit Converter free?

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

### Which has better reviews, Conversion Calculator Units or Unit Converter?

Unit Converter is rated higher. Conversion Calculator Units averages 4.7 out of 5 from 5K ratings, while Unit Converter averages 4.9 from 18 ratings.

### Do Conversion Calculator Units or Unit Converter have ads?

Conversion Calculator Units shows ads; Unit Converter does not.

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

Conversion Calculator Units ships an update every 2 months, and Unit Converter weekly. Most recently, Conversion Calculator Units was updated on October 26, 2026 and Unit Converter 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.*