# Fleet Bible vs NOX TESTER

The clearest difference is iOS requirement: NOX TESTER at 15.6 against Fleet Bible's 17.5. On price, rating, ratings volume and update cadence there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Fleet Bible against 5.0 for NOX TESTER. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Fleet Bible ships an update monthly, NOX TESTER every 3 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Fleet Bible | NOX TESTER |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/fleet-bible/id6743685984/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/nox-tester/id6758373750/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 19 MB | 5 MB |
| Requires iOS | 17.5 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Coyle](https://appshunter.io/developer/1736415880) | [Proformance Diagnostics LLC](https://appshunter.io/developer/1852904316) |

## What reviewers say

### Fleet Bible

[App page](https://appshunter.io/ios/app/fleet-bible/id6743685984)

Manage vehicle parts, track repairs, and find nearby suppliers with real-time GPS. Streamline fleet operations and reduce downtime by organizing inventory and maintenance records efficiently.

**Highlights:** Parts inventory management, Vehicle repair tracking, GPS supplier locator, Real-time stock levels, Smart part search

**Features:** macOS Compatibility

**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 Fleet Bible free?

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

### Is NOX TESTER free?

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

### Which has better reviews, Fleet Bible or NOX TESTER?

Fleet Bible and NOX TESTER are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Fleet Bible or NOX TESTER have ads?

Neither Fleet Bible nor NOX TESTER shows ads.

### Which is updated more often, Fleet Bible or NOX TESTER?

Fleet Bible ships an update monthly, and NOX TESTER every 3 weeks. Most recently, Fleet Bible was updated on October 30, 2026 and NOX TESTER on October 31, 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.*