# Torque Unit Calculator vs Rolls

The clearest difference is update cadence: Rolls at every 12 months against Torque Unit Calculator's every 30 months. Rolls also leads on iOS requirement (9.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Torque Unit Calculator ships an update every 30 months, Rolls every 12 months. The most recent releases landed on October 23, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Torque Unit Calculator | Rolls |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rolls-royce-tech-publications/id595974851/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 30 months | **Every 12 months** |
| Monetization | Free | Free |
| Size | 1 MB | 75 MB |
| Requires iOS | 15.0 | **9.0** |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Norbar](https://appshunter.io/developer/410824699) | [ParallelGraphics](https://appshunter.io/developer/471275517) |

## What reviewers say

### Torque Unit Calculator

[App page](https://appshunter.io/ios/app/torque-unit-calculator/id581212286)

Easily convert between various torque units with this utility application. Developed by Norbar Torque Tools, it offers a straightforward way to handle torque measurements.

**Highlights:** Converts any torque unit to any other, Developed by Norbar Torque Tools, Simple and straightforward interface

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

**In-app purchases:** none


### Rolls

[App page](https://appshunter.io/ios/app/rolls-royce-tech-publications/id595974851)

Access interactive 3D/2D product catalogs, work instructions, and maintenance guides for complex tasks. This tool aids in identifying parts, training, and demonstrating product features.

**Highlights:** Interactive 3D product catalogs, Work instructions and maintenance guides, 3D parts identification and ordering, Classroom and just-in-time training aid, Sales demonstration tool, Multi-touch gestures for 3D navigation, Detailed parts lists and BOM hierarchy

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Torque Unit Calculator free?

Torque Unit Calculator is free to download, with no in-app purchases.

### Is Rolls free?

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

### Do Torque Unit Calculator or Rolls have ads?

Neither Torque Unit Calculator nor Rolls shows ads.

### Which is updated more often, Torque Unit Calculator or Rolls?

Torque Unit Calculator ships an update every 30 months, and Rolls every 12 months. Most recently, Torque Unit Calculator was updated on October 23, 2026 and Rolls on October 19, 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.*