# Chroma Calc Pro vs Units

The clearest difference is ads: Units at none against Chroma Calc Pro's shown. Chroma Calc Pro's advantage is iOS requirement (13.0 vs 15.1). On price, in-app purchases and device support there is nothing between them.

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

## The numbers

| Metric | Chroma Calc Pro | Units |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (15 ratings)](https://appshunter.io/ios/app/units-conversion-calculator/id6761082020/reviews)** |
| Number of ratings | — | **15** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | — |
| Monetization | — | Free |
| Size | 32 MB | 33 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mustafa Kilic](https://appshunter.io/developer/1628559720) | [Matys Bouziane](https://appshunter.io/developer/1785637310) |

## What reviewers say

### Chroma Calc Pro

[App page](https://appshunter.io/ios/app/chroma-calc-pro-calculator/id6751474764)

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

**In-app purchases:** none


### Units

[App page](https://appshunter.io/ios/app/units-conversion-calculator/id6761082020)

Instantly convert any unit with this comprehensive tool. It offers 57 categories, built-in calculators for finance and health, and size lookup tables for clothing and hardware. Enjoy offline functionality and a clean, ad-free experience.

**Highlights:** 57 conversion categories, Built-in calculators (currency, finance, health), Size lookup tables, Offline functionality, Conversion history, Favorites, Multi-language support

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

**In-app purchases:** none


## Frequently asked questions

### Is Chroma Calc Pro free?

Chroma Calc Pro is free to download, with no in-app purchases.

### Is Units free?

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

### Do Chroma Calc Pro or Units have ads?

Chroma Calc Pro shows ads; Units does not.

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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.*