# Pneumatic Cylinder vs CalcEngineer

The clearest difference is update cadence: CalcEngineer at every 2 days against Pneumatic Cylinder's every 37 months. Pneumatic Cylinder's advantage is iOS requirement (6.0 vs 17). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Pneumatic Cylinder against 5.0 for CalcEngineer. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Pneumatic Cylinder ships an update every 37 months, CalcEngineer every 2 days. The most recent releases landed on October 12, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Pneumatic Cylinder | CalcEngineer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/pneumatic-cylinder/id620275578/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/calcengineer/id6748969344/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 37 months | **Every 2 days** |
| Monetization | Free | Free |
| Size | 5 MB | 10 MB |
| Requires iOS | **6.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Zanthic Automation Inc.](https://appshunter.io/developer/574695320) | [Justin Bush](https://appshunter.io/developer/1828308327) |

## What reviewers say

### Pneumatic Cylinder

[App page](https://appshunter.io/ios/app/pneumatic-cylinder/id620275578)

This application simplifies complex calculations for pneumatic cylinders. Input cylinder dimensions, cycle frequency, and air pressure to determine areas, volumes, forces, and air flow rates. Supports both metric and imperial units for versatile use.

**Highlights:** Cylinder dimension input (bore, rod, stroke), Cycle frequency and air pressure input, Rod and bore side area/volume calculation, Extension/retraction force calculation, Rod and bore air flow rate calculation, Metric and imperial unit support

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Pneumatic Cylinder free?

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

### Is CalcEngineer free?

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

### Which has better reviews, Pneumatic Cylinder or CalcEngineer?

Pneumatic Cylinder and CalcEngineer are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Pneumatic Cylinder or CalcEngineer have ads?

Neither Pneumatic Cylinder nor CalcEngineer shows ads.

### Which is updated more often, Pneumatic Cylinder or CalcEngineer?

Pneumatic Cylinder ships an update every 37 months, and CalcEngineer every 2 days. Most recently, Pneumatic Cylinder was updated on October 12, 2026 and CalcEngineer on October 15, 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.*