# Virtual Loop vs Napoleon/Lynx Spring Calc

The clearest difference is rating: Napoleon/Lynx Spring Calc at 5.0 against Virtual Loop's 4.0. Virtual Loop's advantage is update cadence (every 2 months vs every 7 months) and ratings volume (4 vs 1). 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.

Napoleon/Lynx Spring Calc holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

Virtual Loop ships an update every 2 months, Napoleon/Lynx Spring Calc every 7 months. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Virtual Loop | Napoleon/Lynx Spring Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/virtual-loop/id1569757793/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/napoleonlynx-spring-calc/id6737538790/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 7 months |
| Monetization | Free | Free |
| Size | 4 MB | 23 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [OPTEX CO., LTD.](https://appshunter.io/developer/1447859848) | [Napoleon Spring Works](https://appshunter.io/developer/1771529934) |

## What reviewers say

### 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


### Napoleon/Lynx Spring Calc

[App page](https://appshunter.io/ios/app/napoleonlynx-spring-calc/id6737538790)

This utility app simplifies garage door torsion spring calculations for single and duplex assemblies. It supports various lift types and drums, allowing users to save and share their calculations. Connect with local sales representatives for parts and assistance.

**Highlights:** Calculates torsion springs for single/duplex assemblies, Supports various lift types and drums, Save calculations locally, Share calculations with other apps, Direct contact for sales representatives

**In-app purchases:** none


## Frequently asked questions

### Is Virtual Loop free?

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

### Is Napoleon/Lynx Spring Calc free?

Napoleon/Lynx Spring Calc is free to download, with no in-app purchases.

### Which has better reviews, Virtual Loop or Napoleon/Lynx Spring Calc?

Napoleon/Lynx Spring Calc is rated higher. Virtual Loop averages 4.0 out of 5 from 4 ratings, while Napoleon/Lynx Spring Calc averages 5.0 from 1 ratings.

### Do Virtual Loop or Napoleon/Lynx Spring Calc have ads?

Neither Virtual Loop nor Napoleon/Lynx Spring Calc shows ads.

### Which is updated more often, Virtual Loop or Napoleon/Lynx Spring Calc?

Virtual Loop ships an update every 2 months, and Napoleon/Lynx Spring Calc every 7 months. Most recently, Virtual Loop was updated on October 2, 2026 and Napoleon/Lynx Spring Calc on October 1, 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.*