# MechTab vs Hydraulic System Calculator

MechTab and Hydraulic System Calculator both sit at 4.1 stars, but that hides the real split: 89% of MechTab's written reviews are positive against 0% of Hydraulic System Calculator's. MechTab also leads on ratings volume (16 vs 3). On price, rating, update cadence 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 — 4.1 for MechTab against 4.0 for Hydraulic System Calculator. That said, the two scores are not equally well evidenced: MechTab has 16 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 89% of MechTab's written reviews are positive against 0% of Hydraulic System Calculator's.

MechTab ships an update every 9 months, Hydraulic System Calculator every 7 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | MechTab | Hydraulic System Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (16 ratings)](https://appshunter.io/ios/app/mechtab/id553201101/reviews)** | [4.0 (3 ratings)](https://appshunter.io/ios/app/hydraulic-system-calculator/id826281445/reviews) |
| Number of ratings | **16** | 3 |
| Positive reviews | **88.6% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 7 months** |
| Monetization | Free | Free |
| Size | 9 MB | 94 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Werder AG](https://appshunter.io/developer/553201104) | [Trelleborg Sealing Solutions](https://appshunter.io/developer/396863758) |

## What reviewers say

### MechTab

[App page](https://appshunter.io/ios/app/mechtab/id553201101)

This app offers a comprehensive set of tools for mechanics, providing essential data on tolerances, threads, cutting speeds, wrench sizes, and roughness. It also includes calculators for material weight, triangle properties, and trowalisation.

**Highlights:** ISO-Tolerance data (holes and shafts), Thread specifications, Cutting data calculations, Wrench size conversions, Roughness parameters, Material weight calculator, Triangle property calculator

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

**In-app purchases:** none


### Hydraulic System Calculator

[App page](https://appshunter.io/ios/app/hydraulic-system-calculator/id826281445)

Calculate key parameters for hydraulic cylinders, pumps, motors, and pipes. Design individual components, view formulas, and switch between metric and imperial units for precise engineering.

**Highlights:** Calculate cylinder, pump, and motor parameters, Design single/double-acting cylinders, View and switch units (Metric/Imperial), Calculate piping parameters, Dynamic result updates, Copy and share results

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MechTab free?

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

### Is Hydraulic System Calculator free?

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

### Which has better reviews, MechTab or Hydraulic System Calculator?

MechTab is rated higher. MechTab averages 4.1 out of 5 from 16 ratings, while Hydraulic System Calculator averages 4.0 from 3 ratings.

### Do MechTab or Hydraulic System Calculator have ads?

Neither MechTab nor Hydraulic System Calculator shows ads.

### Which is updated more often, MechTab or Hydraulic System Calculator?

MechTab ships an update every 9 months, and Hydraulic System Calculator every 7 months. Most recently, MechTab was updated on November 6, 2026 and Hydraulic System Calculator on November 2, 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.*