# CalcEngineer vs PT Ductulator

The clearest difference is iOS requirement: CalcEngineer at 17 against PT Ductulator's 26.1. 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 | CalcEngineer | PT Ductulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/calcengineer/id6748969344/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 days | — |
| Monetization | Free | — |
| Size | 10 MB | 5 MB |
| Requires iOS | **17** | 26.1 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [Justin Bush](https://appshunter.io/developer/1828308327) | [Randall McGrath](https://appshunter.io/developer/1816832117) |

## What reviewers say

### CalcEngineer

[App page](https://appshunter.io/ios/app/calcengineer/id6748969344)

This app provides professional engineering calculations for compressed air systems. It helps engineers and technicians determine CFM requirements, size compressors and tanks, and analyze pressure drops for optimized pneumatic systems.

**Highlights:** CFM Calculator, Compressor & Tank Sizing, Pressure Drop Analysis, Flow Velocity & Pipe Sizing, Multiple CFM Entries, General Engineering Calculator Suite

**Features:** macOS Compatibility

**In-app purchases:** none


### PT Ductulator

[App page](https://appshunter.io/ios/app/pt-ductulator/id6755953588)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CalcEngineer free?

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

### Is PT Ductulator free?

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

### Do CalcEngineer or PT Ductulator have ads?

Neither CalcEngineer nor PT Ductulator 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.*