# NoxOps vs NOX TESTER

The clearest difference is in-app purchases: NOX TESTER at none against NoxOps's 2. NoxOps's advantage is update cadence (every 4 days vs every 3 weeks) and iOS requirement (13.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. NoxOps sells 2 one-off in-app purchases. NOX TESTER asks for nothing beyond the download.

NoxOps ships an update every 4 days, NOX TESTER every 3 weeks. The most recent releases landed on October 25, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | NoxOps | 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 | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 3 weeks |
| Monetization | — | Free |
| Size | 52 MB | 5 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Usham Kamaljit Singh](https://appshunter.io/developer/1811528552) | [Proformance Diagnostics LLC](https://appshunter.io/developer/1852904316) |

## What reviewers say

### NoxOps

[App page](https://appshunter.io/ios/app/noxops/id6754835740)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NoxOps Pro Access | $10.00 | one-time |
| NoxOps Infinite Access | $200.00 | one-time |


### 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 NoxOps free?

NoxOps is free to download, with in-app purchases available.

### Is NOX TESTER free?

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

### Do NoxOps or NOX TESTER have ads?

Neither NoxOps nor NOX TESTER shows ads.

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

NoxOps ships an update every 4 days, and NOX TESTER every 3 weeks. Most recently, NoxOps was updated on October 25, 2026 and NOX TESTER on October 19, 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.*