# Torque Wrench Extension Calc vs Catalyst by APSM

The clearest difference is rating: Catalyst by APSM at 5.0 against Torque Wrench Extension Calc's 3.7. Catalyst by APSM also leads on update cadence (every 4 months vs every 45 months) and device support (3 vs 1). On price, ratings volume, 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.

Catalyst by APSM holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 2 respectively.

Torque Wrench Extension Calc ships an update every 45 months, Catalyst by APSM every 4 months. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Torque Wrench Extension Calc | Catalyst by APSM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/torque-wrench-extension-calc/id581225832/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/catalyst-by-apsm/id6480323124/reviews)** |
| Number of ratings | **3** | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 45 months | **Every 4 months** |
| Monetization | Free | Free |
| Size | 1 MB | 45 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Norbar](https://appshunter.io/developer/410824699) | [APSM, LLC](https://appshunter.io/developer/1738694056) |

## What reviewers say

### Torque Wrench Extension Calc

[App page](https://appshunter.io/ios/app/torque-wrench-extension-calc/id581225832)

Calculate the correct torque wrench setting when using an extension. This tool helps ensure the proper torque is applied to fasteners by adjusting the wrench's value based on extension length. Supports English, French, German, and Spanish.

**Highlights:** Calculate torque with extensions, Adjust wrench settings, Multiple language support, Fastener torque accuracy

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

**In-app purchases:** none


### Catalyst by APSM

[App page](https://appshunter.io/ios/app/catalyst-by-apsm/id6480323124)

This mobile application enhances field operations for the APSM Software Platform. It allows users to perform tasks like logging, inspections, and managing work orders. Access essential documents and asset information conveniently, both online and offline.

**Highlights:** Online and offline field operations, Logging and inspections, Corrective work orders, Download and review SOPs, MPs, TOS, P&IDs, Access asset information

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

**In-app purchases:** none


## Frequently asked questions

### Is Torque Wrench Extension Calc free?

Torque Wrench Extension Calc is free to download, with no in-app purchases.

### Is Catalyst by APSM free?

Catalyst by APSM is free to download, with no in-app purchases.

### Which has better reviews, Torque Wrench Extension Calc or Catalyst by APSM?

Catalyst by APSM is rated higher. Torque Wrench Extension Calc averages 3.7 out of 5 from 3 ratings, while Catalyst by APSM averages 5.0 from 2 ratings.

### Do Torque Wrench Extension Calc or Catalyst by APSM have ads?

Neither Torque Wrench Extension Calc nor Catalyst by APSM shows ads.

### Which is updated more often, Torque Wrench Extension Calc or Catalyst by APSM?

Torque Wrench Extension Calc ships an update every 45 months, and Catalyst by APSM every 4 months. Most recently, Torque Wrench Extension Calc was updated on October 29, 2026 and Catalyst by APSM on October 30, 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.*