# SKF Belt Calc vs Dodge OPTIFY™

The clearest difference is update cadence: Dodge OPTIFY™ at monthly against SKF Belt Calc's every 5 months. Dodge OPTIFY™ also leads on rating (4.7 vs 4.5) and ratings volume (7 vs 2). SKF Belt Calc's advantage is iOS requirement (8.0 vs 15.0). On price, review sentiment, 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.

Dodge OPTIFY™ holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 2 and 7 respectively. Written reviews complicate that: 57% of SKF Belt Calc's written reviews are positive against 50% of Dodge OPTIFY™'s, so the app with the better star average is not the one people write more warmly about.

SKF Belt Calc ships an update every 5 months, Dodge OPTIFY™ monthly. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | SKF Belt Calc | Dodge OPTIFY™ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (2 ratings)](https://appshunter.io/ios/app/skf-belt-calc/id431068885/reviews) | **[4.7 (7 ratings)](https://appshunter.io/ios/app/dodge-optify/id1635728091/reviews)** |
| Number of ratings | 2 | **7** |
| Positive reviews | **57.1% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | Free | Free |
| Size | 38 MB | 111 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SKF](https://appshunter.io/developer/472922971) | [Dodge Industrial, Inc.](https://appshunter.io/developer/1635728093) |

## What reviewers say

### SKF Belt Calc

[App page](https://appshunter.io/ios/app/skf-belt-calc/id431068885)

This app helps field engineers and technical sales professionals evaluate existing belt drive designs. It offers over 100 alternative solutions and allows for easy emailing of drawings and instructions in PDF format, even in remote locations.

**Highlights:** Evaluate existing belt drive designs, Propose over 100 alternative solutions, Email PDF drawings and instructions, Multi-language support, Offline functionality

**Features:** macOS Compatibility

**In-app purchases:** none


### Dodge OPTIFY™

[App page](https://appshunter.io/ios/app/dodge-optify/id1635728091)

Monitor the health of your industrial assets remotely to predict maintenance needs and prevent costly downtime. This platform combines IIoT products with data analytics for improved reliability and safe operations.

**Highlights:** Remote asset health monitoring, Predictive maintenance alerts, Reduced downtime, Improved operational reliability, Safe remote inspections, Online and offline capabilities

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

**In-app purchases:** none


## Frequently asked questions

### Is SKF Belt Calc free?

SKF Belt Calc is free to download, with no in-app purchases.

### Is Dodge OPTIFY™ free?

Dodge OPTIFY™ is free to download, with no in-app purchases.

### Which has better reviews, SKF Belt Calc or Dodge OPTIFY™?

Dodge OPTIFY™ is rated higher. SKF Belt Calc averages 4.5 out of 5 from 2 ratings, while Dodge OPTIFY™ averages 4.7 from 7 ratings.

### Do SKF Belt Calc or Dodge OPTIFY™ have ads?

Neither SKF Belt Calc nor Dodge OPTIFY™ shows ads.

### Which is updated more often, SKF Belt Calc or Dodge OPTIFY™?

SKF Belt Calc ships an update every 5 months, and Dodge OPTIFY™ monthly. Most recently, SKF Belt Calc was updated on November 1, 2026 and Dodge OPTIFY™ on November 3, 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.*