# SSC Spring Engineering vs Virtual Loop

The clearest difference is rating: SSC Spring Engineering at 4.6 against Virtual Loop's 4.0. SSC Spring Engineering also leads on ratings volume (26 vs 4). Virtual Loop's advantage is update cadence (every 2 months vs every 6 months) and iOS requirement (12.0 vs 15.1). 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.

SSC Spring Engineering holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: SSC Spring Engineering has 26 ratings behind it against 4, so its average is the more settled of the two. Written reviews split almost evenly too, at 50% and 50% positive.

SSC Spring Engineering ships an update every 6 months, Virtual Loop every 2 months. The most recent releases landed on September 29, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | SSC Spring Engineering | Virtual Loop |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (26 ratings)](https://appshunter.io/ios/app/ssc-spring-engineering/id1438112209/reviews)** | [4.0 (4 ratings)](https://appshunter.io/ios/app/virtual-loop/id1569757793/reviews) |
| Number of ratings | **26** | 4 |
| Positive reviews | 50.0% of reviews | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 38 MB | 4 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Service Spring Corporation](https://appshunter.io/developer/342694497) | [OPTEX CO., LTD.](https://appshunter.io/developer/1447859848) |

## What reviewers say

### SSC Spring Engineering

[App page](https://appshunter.io/ios/app/ssc-spring-engineering/id1438112209)

This utility app assists with spring engineering calculations, including conversions, new designs, and comparisons. It helps determine spring and drum specifications for various applications, such as rolling steel doors, and calculates lifting capacities.

**Highlights:** Spring conversion, New spring engineering, Drum specification comparison, IPPT spring calculation, Rolling steel door spring design, Approximate pull calculation, Maximum lift capacity determination

**Features:** macOS Compatibility

**In-app purchases:** none


### Virtual Loop

[App page](https://appshunter.io/ios/app/virtual-loop/id1569757793)

This utility app allows users to configure and monitor vehicle detection sensors. It enables exporting and importing sensor settings and provides visual and auditory feedback on sensor status.

**Highlights:** Configure vehicle detection sensors, Export and import sensor settings, Monitor sensor status visually, Receive auditory alerts for sensor conditions, Check sensor condition

**In-app purchases:** none


## Frequently asked questions

### Is SSC Spring Engineering free?

SSC Spring Engineering is free to download, with no in-app purchases.

### Is Virtual Loop free?

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

### Which has better reviews, SSC Spring Engineering or Virtual Loop?

SSC Spring Engineering is rated higher. SSC Spring Engineering averages 4.6 out of 5 from 26 ratings, while Virtual Loop averages 4.0 from 4 ratings.

### Do SSC Spring Engineering or Virtual Loop have ads?

Neither SSC Spring Engineering nor Virtual Loop shows ads.

### Which is updated more often, SSC Spring Engineering or Virtual Loop?

SSC Spring Engineering ships an update every 6 months, and Virtual Loop every 2 months. Most recently, SSC Spring Engineering was updated on September 29, 2026 and Virtual Loop on September 15, 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.*