# Bolt Torque vs Units

The clearest difference is price: Units at Free against Bolt Torque's $9.99. Units also leads on ratings volume (6 vs 1) and iOS requirement (15.1 vs 18.6). Bolt Torque's advantage is rating (5.0 vs 4.8). On ads, in-app purchases and device support there is nothing between them.

Units is free to download; Bolt Torque costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Bolt Torque holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Units has 6 ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | Bolt Torque | Units |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/bolt-torque/id702964576/reviews)** | [4.8 (6 ratings)](https://appshunter.io/ios/app/units-conversion-calculator/id6761082020/reviews) |
| Number of ratings | 1 | **6** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | — |
| Monetization | Paid | **Free** |
| Size | 1 MB | 33 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jochen Autrata](https://appshunter.io/developer/702964579) | [Matys Bouziane](https://appshunter.io/developer/1785637310) |

## What reviewers say

### Bolt Torque

[App page](https://appshunter.io/ios/app/bolt-torque/id702964576)

Calculate maximum tightening torque and preloads for various screws. Analyze preloads and stresses to ensure limits are met. All screw data is conveniently presented on a results page.

**Highlights:** Calculate tightening torque, Calculate preloads, Analyze stresses, Check limits, View screw data

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

**In-app purchases:** none


### Units

[App page](https://appshunter.io/ios/app/units-conversion-calculator/id6761082020)

Instantly convert any unit with this comprehensive tool. It offers 57 categories, built-in calculators for finance and health, and size lookup tables for clothing and hardware. Enjoy offline functionality and a clean, ad-free experience.

**Highlights:** 57 conversion categories, Built-in calculators (currency, finance, health), Size lookup tables, Offline functionality, Conversion history, Favorites, Multi-language support

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

**In-app purchases:** none


## Frequently asked questions

### Is Bolt Torque free?

Bolt Torque costs $9.99, with no in-app purchases.

### Is Units free?

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

### Which has better reviews, Bolt Torque or Units?

Bolt Torque is rated higher. Bolt Torque averages 5.0 out of 5 from 1 ratings, while Units averages 4.8 from 6 ratings.

### Do Bolt Torque or Units have ads?

Neither Bolt Torque nor Units shows ads.

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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.*