# MechTab vs calcISO10042

The clearest difference is price: MechTab at Free against calcISO10042's $2.99. MechTab also leads on update cadence (every 9 months vs every 26 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

MechTab is free to download; calcISO10042 costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

MechTab ships an update every 9 months, calcISO10042 every 26 months. The most recent releases landed on November 1, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | MechTab | calcISO10042 |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[4.1 (16 ratings)](https://appshunter.io/ios/app/mechtab/id553201101/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 88.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 26 months |
| Monetization | Free | — |
| Size | 9 MB | 4 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Werder AG](https://appshunter.io/developer/553201104) | [Georg Rose](https://appshunter.io/developer/521567472) |

## 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


### calcISO10042

[App page](https://appshunter.io/ios/app/calciso10042/id583654495)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MechTab free?

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

### Is calcISO10042 free?

calcISO10042 costs $2.99, with no in-app purchases.

### Do MechTab or calcISO10042 have ads?

Neither MechTab nor calcISO10042 shows ads.

### Which is updated more often, MechTab or calcISO10042?

MechTab ships an update every 9 months, and calcISO10042 every 26 months. Most recently, MechTab was updated on November 1, 2026 and calcISO10042 on October 14, 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.*