# Engineer Calculator vs Pipe Flow Calculations

The clearest difference is iOS requirement: Pipe Flow Calculations at 13.0 against Engineer Calculator's 15.1. On price, ads, 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 | Engineer Calculator | Pipe Flow Calculations |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Size | 22 MB | 17 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Sooseok Oh](https://appshunter.io/developer/1495610096) | [Application Services LLC](https://appshunter.io/developer/1896064953) |

## What reviewers say

### Engineer Calculator

[App page](https://appshunter.io/ios/app/engineer-calculator/id6761696084)

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

**In-app purchases:** none


### Pipe Flow Calculations

[App page](https://appshunter.io/ios/app/pipe-flow-calculations/id6765766469)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Engineer Calculator free?

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

### Is Pipe Flow Calculations free?

Pipe Flow Calculations is free to download, with no in-app purchases.

### Do Engineer Calculator or Pipe Flow Calculations have ads?

Neither Engineer Calculator nor Pipe Flow Calculations 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.*