# Unit Converter vs Scale Switch

The clearest difference is update cadence: Unit Converter at weekly against Scale Switch's every 4 months. Unit Converter also leads on ratings volume (18 vs 1). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.9 for Unit Converter against 5.0 for Scale Switch. That said, the two scores are not equally well evidenced: Unit Converter has 18 ratings behind it against 1, so its average is the more settled of the two.

Unit Converter ships an update weekly, Scale Switch every 4 months. The most recent releases landed on November 12, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Unit Converter | Scale Switch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (18 ratings)](https://appshunter.io/ios/app/unit-converter-scientific/id6692634387/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/scale-switch/id6740058611/reviews)** |
| Number of ratings | **18** | 1 |
| Positive reviews | 90.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 4 months |
| Monetization | Free | Free |
| Size | 4 MB | 2 MB |
| Requires iOS | **17.0** | 18.1 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Ahmet Burak Albayrak](https://appshunter.io/developer/1769045837) | [Alberto Purpura](https://appshunter.io/developer/1661532927) |

## What reviewers say

### 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


### Scale Switch

[App page](https://appshunter.io/ios/app/scale-switch/id6740058611)

This utility app simplifies unit conversions with an intuitive interface. Easily convert between various units for time, data, temperature, area, volume, and more. It's designed for quick, reliable conversions on the go.

**Highlights:** Easy-to-use interface for conversions, Wide range of supported units, Converts time, data, temperature, area, volume, and more, Intuitive and clutter-free design, Quick and reliable results, Supports various measurement systems

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Unit Converter free?

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

### Is Scale Switch free?

Scale Switch is free to download, with no in-app purchases.

### Which has better reviews, Unit Converter or Scale Switch?

Scale Switch is rated higher. Unit Converter averages 4.9 out of 5 from 18 ratings, while Scale Switch averages 5.0 from 1 ratings.

### Do Unit Converter or Scale Switch have ads?

Neither Unit Converter nor Scale Switch shows ads.

### Which is updated more often, Unit Converter or Scale Switch?

Unit Converter ships an update weekly, and Scale Switch every 4 months. Most recently, Unit Converter was updated on November 12, 2026 and Scale Switch on October 30, 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.*