# Belt Length Calculator Pro vs Machine Utility

The clearest difference is price: Machine Utility at Free against Belt Length Calculator Pro's $2.99. Machine Utility also leads on update cadence (monthly vs every 41 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Machine Utility is free to download; Belt Length Calculator Pro costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Belt Length Calculator Pro ships an update every 41 months, Machine Utility monthly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Belt Length Calculator Pro | Machine Utility |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/belt-length-calculator-pro/id1487292230/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 41 months | **Monthly** |
| Monetization | Paid | — |
| Size | 1 MB | 22 MB |
| Requires iOS | 16.1 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Imran Pinjara](https://appshunter.io/developer/1484488781) | [Avishkruti Solutions](https://appshunter.io/developer/1747669593) |

## What reviewers say

### Belt Length Calculator Pro

[App page](https://appshunter.io/ios/app/belt-length-calculator-pro/id1487292230)

Calculate the required belt length for drive systems using open or cross belt arrangements. Input pulley diameters and center distance to get the precise belt length needed.

**Highlights:** Open belt arrangement calculation, Cross belt arrangement calculation, Input large pulley diameter, Input small pulley diameter, Input center length of pulleys, Provides belt length output

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

**In-app purchases:** none


### Machine Utility

[App page](https://appshunter.io/ios/app/machine-utility/id6757601175)

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

**In-app purchases:** none


## Frequently asked questions

### Is Belt Length Calculator Pro free?

Belt Length Calculator Pro costs $2.99, with no in-app purchases.

### Is Machine Utility free?

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

### Do Belt Length Calculator Pro or Machine Utility have ads?

Neither Belt Length Calculator Pro nor Machine Utility shows ads.

### Which is updated more often, Belt Length Calculator Pro or Machine Utility?

Belt Length Calculator Pro ships an update every 41 months, and Machine Utility monthly. Most recently, Belt Length Calculator Pro was updated on November 3, 2026 and Machine Utility on October 31, 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.*