# Q Calculator vs SDApp

The clearest difference is iOS requirement: SDApp at 11.0 against Q Calculator's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Q Calculator ships an update every 14 months, SDApp every 10 months. The most recent releases landed on October 11, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Q Calculator | SDApp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/q-calculator/id1323960132/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 10 months** |
| Monetization | Free | — |
| Size | 30 MB | 65 MB |
| Requires iOS | 15.1 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ArtWhere s.a.](https://appshunter.io/developer/389537571) | [GROUPE MAURIZI](https://appshunter.io/developer/1366204476) |

## What reviewers say

### Q Calculator

[App page](https://appshunter.io/ios/app/q-calculator/id1323960132)

This app provides optimal parameters for cutting, bending, welding, or machining specific steel types. Input basic steel information to receive precise machine setup guidance for high-quality results. It functions offline, ensuring accessibility in any location.

**Highlights:** Steel parameter calculation, Cutting, bending, welding guidance, Machining optimization, Offline functionality, Multi-language support, High-quality work output

**Features:** macOS Compatibility

**In-app purchases:** none


### SDApp

[App page](https://appshunter.io/ios/app/sdapp/id1366204478)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Q Calculator free?

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

### Is SDApp free?

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

### Do Q Calculator or SDApp have ads?

Neither Q Calculator nor SDApp shows ads.

### Which is updated more often, Q Calculator or SDApp?

Q Calculator ships an update every 14 months, and SDApp every 10 months. Most recently, Q Calculator was updated on October 11, 2026 and SDApp on October 10, 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.*