# LightningVolt vs NOX TESTER

The clearest difference is update cadence: NOX TESTER at every 3 weeks against LightningVolt's every 6 weeks. LightningVolt's advantage is iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

LightningVolt ships an update every 6 weeks, NOX TESTER every 3 weeks. The most recent releases landed on September 30, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | LightningVolt | NOX TESTER |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/nox-tester/id6758373750/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 28 MB | 5 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Roadwarrior Inc.](https://appshunter.io/developer/1712729585) | [Proformance Diagnostics LLC](https://appshunter.io/developer/1852904316) |

## What reviewers say

### LightningVolt

[App page](https://appshunter.io/ios/app/lightningvolt/id6469853871)

**In-app purchases:** none


### NOX TESTER

[App page](https://appshunter.io/ios/app/nox-tester/id6758373750)

This diagnostic tool tests NOx sensors by connecting to the sensor's circuit board and probe. It activates the sensor, collects data on NOx and oxygen levels for three minutes, and analyzes the results to identify faults and generate a report.

**Highlights:** Connects to NOx sensor via diagnostic harness, Communicates via CAN signals, Tests sensor circuit board and detection probe, Activates NOx sensor, Collects NOx and oxygen concentration data, Analyzes data and generates test reports

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

**In-app purchases:** none


## Frequently asked questions

### Is LightningVolt free?

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

### Is NOX TESTER free?

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

### Do LightningVolt or NOX TESTER have ads?

Neither LightningVolt nor NOX TESTER shows ads.

### Which is updated more often, LightningVolt or NOX TESTER?

LightningVolt ships an update every 6 weeks, and NOX TESTER every 3 weeks. Most recently, LightningVolt was updated on September 30, 2026 and NOX TESTER 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.*