# MechTab vs Seals Catalog

The clearest difference is rating: Seals Catalog at 5.0 against MechTab's 4.1. Seals Catalog also leads on iOS requirement (9.0 vs 15.0). MechTab's advantage is ratings volume (16 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Seals Catalog holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: MechTab has 16 ratings behind it against 1, so its average is the more settled of the two.

MechTab ships an update every 9 months, Seals Catalog every 10 months. The most recent releases landed on September 15, 2026 and June 22, 2026 respectively.

## The numbers

| Metric | MechTab | Seals Catalog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (16 ratings)](https://appshunter.io/ios/app/mechtab/id553201101/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/seals-catalog/id1460114822/reviews)** |
| Number of ratings | **16** | 1 |
| Positive reviews | 88.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 10 months |
| Monetization | Free | Free |
| Size | 9 MB | 34 MB |
| Requires iOS | 15.0 | **9.0** |
| 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


### Seals Catalog

[App page](https://appshunter.io/ios/app/seals-catalog/id1460114822)

Access detailed product information, material data sheets, and compare multiple seals. Filter products by item number, type, or operating conditions to find specific items. Request quotations directly through the app by adding items to a shopping cart.

**Highlights:** Detailed product descriptions, Material data sheets, Seal comparison tool, Product search and filtering, Request quotation, Shopping cart functionality

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MechTab free?

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

### Is Seals Catalog free?

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

### Which has better reviews, MechTab or Seals Catalog?

Seals Catalog is rated higher. MechTab averages 4.1 out of 5 from 16 ratings, while Seals Catalog averages 5.0 from 1 ratings.

### Do MechTab or Seals Catalog have ads?

Neither MechTab nor Seals Catalog shows ads.

### Which is updated more often, MechTab or Seals Catalog?

MechTab ships an update every 9 months, and Seals Catalog every 10 months. Most recently, MechTab was updated on September 15, 2026 and Seals Catalog on June 22, 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.*