# mechanical design engine vs Hydraulic Calculator Engineer

The clearest difference is update cadence: mechanical design engine at every 2 months against Hydraulic Calculator Engineer's every 22 months. mechanical design engine also leads on iOS requirement (13.0 vs 15.0). 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.

mechanical design engine ships an update every 2 months, Hydraulic Calculator Engineer every 22 months. The most recent releases landed on September 8, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | mechanical design engine | Hydraulic Calculator Engineer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (9 ratings)](https://appshunter.io/ios/app/hydraulic-calculator-engineer/id1664790770/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 22 months |
| Monetization | — | Free |
| Size | 63 MB | 21 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [gan dae choi](https://appshunter.io/developer/1574341439) | [Arsosa Network Inc.](https://appshunter.io/developer/1209042440) |

## What reviewers say

### mechanical design engine

[App page](https://appshunter.io/ios/app/mechanical-design-engine/id1574341437)

**Features:** macOS Compatibility

**In-app purchases:** none


### Hydraulic Calculator Engineer

[App page](https://appshunter.io/ios/app/hydraulic-calculator-engineer/id1664790770)

This app offers a suite of hydraulic calculations for technicians and engineers. It simplifies complex hydraulics by automatically computing results based on user-entered values, eliminating the need for manual formula application.

**Highlights:** Cylinder Calculation, Power Calculation, Pressure Difference, Piston Diameter, Speed Calculation, Lifting Time, Volume Flow

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

**In-app purchases:** none


## Frequently asked questions

### Is mechanical design engine free?

mechanical design engine is free to download, with no in-app purchases.

### Is Hydraulic Calculator Engineer free?

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

### Do mechanical design engine or Hydraulic Calculator Engineer have ads?

Neither mechanical design engine nor Hydraulic Calculator Engineer shows ads.

### Which is updated more often, mechanical design engine or Hydraulic Calculator Engineer?

mechanical design engine ships an update every 2 months, and Hydraulic Calculator Engineer every 22 months. Most recently, mechanical design engine was updated on September 8, 2026 and Hydraulic Calculator Engineer on September 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.*