# CalcQX ~ the calculator vs OnStep Controller

The clearest difference is price: OnStep Controller at Free against CalcQX ~ the calculator's $0.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

OnStep Controller is free to download; CalcQX ~ the calculator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | CalcQX ~ the calculator | OnStep Controller |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/calcqx-the-calculator/id406295517/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 90.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Paid | — |
| Size | 5 MB | 7 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CodeQX](https://appshunter.io/developer/406295520) | [Gray Digital Arts LLC](https://appshunter.io/developer/1895978400) |

## What reviewers say

### CalcQX ~ the calculator

[App page](https://appshunter.io/ios/app/calcqx-the-calculator/id406295517)

This app provides a seamless calculation experience with standard and engineering modes. It offers features like undo/redo, memory slots, and reusable expressions for efficient daily calculations.

**Highlights:** Standard and Engineering calculation modes, Undo and redo functionality, Up to 50 memory slots, Reusable expressions and results, Info-rich display, Scientific function support

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

**In-app purchases:** none


### OnStep Controller

[App page](https://appshunter.io/ios/app/onstep-controller-gda/id6765521295)

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

**In-app purchases:** none


## Frequently asked questions

### Is CalcQX ~ the calculator free?

CalcQX ~ the calculator costs $0.99, with no in-app purchases.

### Is OnStep Controller free?

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

### Do CalcQX ~ the calculator or OnStep Controller have ads?

Neither CalcQX ~ the calculator nor OnStep Controller 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.*