# Calculator² vs Units

The clearest difference is in-app purchases: Units at none against Calculator²'s 3. Calculator²'s advantage is iOS requirement (9.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Calculator² sells 3 one-off in-app purchases. Units asks for nothing beyond the download.

## The numbers

| Metric | Calculator² | Units |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (9 ratings)](https://appshunter.io/ios/app/units-conversion-calculator/id6761082020/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 78 MB | 33 MB |
| Requires iOS | **9.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Richard Walters](https://appshunter.io/developer/1137474748) | [Matys Bouziane](https://appshunter.io/developer/1785637310) |

## What reviewers say

### Calculator²

[App page](https://appshunter.io/ios/app/calculator/id1137474749)

This app offers a suite of specialized calculators, including scientific, financial, programmer, and basic functions. It also features a currency converter and a comprehensive unit converter for various needs.

**Highlights:** Scientific calculator with advanced functions, Financial calculator for loan and tax calculations, Programmer calculator for number base conversions, Currency converter with real-time rates, Unit converter for over 200 units, Basic calculator for everyday use

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Financial Calculator | $0.99 | one-time |
| Currency Converter | $0.99 | one-time |
| Calculator² Premium | $1.99 | one-time |


### 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 Calculator² free?

Calculator² is free to download, with in-app purchases available.

### Is Units free?

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

### Do Calculator² or Units have ads?

Neither Calculator² nor Units shows ads.

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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.*