# Unit Converter Toolbox vs Unit Conversion

The clearest difference is in-app purchases: Unit Converter Toolbox at none against Unit Conversion's 3. Unit Converter Toolbox also leads on iOS requirement (15.0 vs 18.2). Unit Conversion's advantage is update cadence (weekly vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Unit Conversion sells 3 in-app purchases, starting at $4.99 per month. Unit Converter Toolbox asks for nothing beyond the download.

Unit Converter Toolbox ships an update every 3 months, Unit Conversion weekly. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Unit Converter Toolbox | Unit Conversion |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/unit-conversion-kg-to-lbs-cm/id6806934106/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 12.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Free | — |
| Size | 32 MB | 35 MB |
| Requires iOS | **15.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Andrej Podlubnyj](https://appshunter.io/developer/583628251) | [Dzmitry Dzemidziuk](https://appshunter.io/developer/1868205867) |

## What reviewers say

### Unit Converter Toolbox

[App page](https://appshunter.io/ios/app/unit-converter-toolbox/id583628208)

Easily convert between various units of measurement for mass, temperature, distance, volume, pressure, area, weight, density, and more. This application supports both standard and exotic units, offering a straightforward solution for diverse conversion needs.

**Highlights:** Converts physical quantities, Converts volume units, Converts pressure units, Converts area units, Converts weight units, Converts temperature units, Converts density units, Converts length units

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

**In-app purchases:** none


### Unit Conversion

[App page](https://appshunter.io/ios/app/unit-conversion-kg-to-lbs-cm/id6806934106)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $4.99 | per month |
| Premium Annual | $29.99 | per year |
| Lifetime Premium | $59.99 | one-time |


## Frequently asked questions

### Is Unit Converter Toolbox free?

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

### Is Unit Conversion free?

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

### Do Unit Converter Toolbox or Unit Conversion have ads?

Both Unit Converter Toolbox and Unit Conversion show ads.

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

Unit Converter Toolbox ships an update every 3 months, and Unit Conversion weekly. Most recently, Unit Converter Toolbox was updated on October 22, 2026 and Unit Conversion 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.*