# Unit Converter Toolbox vs Converter Pro

The clearest difference is review sentiment: Converter Pro at 72% against Unit Converter Toolbox's 13%. Unit Converter Toolbox's advantage is in-app purchases (none vs 1) and iOS requirement (15.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

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

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 22, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Unit Converter Toolbox | Converter Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (45 ratings)](https://appshunter.io/ios/app/converter-pro-unit-converter/id663948608/reviews)** |
| Number of ratings | — | **45** |
| Positive reviews | 12.7% of reviews | **72.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 32 MB | 43 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Andrej Podlubnyj](https://appshunter.io/developer/583628251) | [Panoramic Software Inc.](https://appshunter.io/developer/329216366) |

## 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


### Converter Pro

[App page](https://appshunter.io/ios/app/converter-pro-unit-converter/id663948608)

This app provides a comprehensive tool for converting units and currencies. It offers over 3000 unit conversions across 19 categories and daily updated rates for over 150 world currencies. Customize the look with different skins and access past calculations.

**Highlights:** 3000+ unit conversions, 150+ currency rates, 19 conversion categories, Daily currency rate updates, Customizable skins and color schemes, Tape View for recent equations

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $3.99 | one-time |


## Frequently asked questions

### Is Unit Converter Toolbox free?

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

### Is Converter Pro free?

Converter Pro is free to download, with in-app purchases available.

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

Both Unit Converter Toolbox and Converter Pro show ads.

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

Unit Converter Toolbox ships an update every 3 months, and Converter Pro every 3 months. Most recently, Unit Converter Toolbox was updated on October 22, 2026 and Converter Pro on October 20, 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.*