# CZone 2 vs Mercury Diagnostic App

The clearest difference is ratings volume: CZone 2 at 7 against Mercury Diagnostic App's 1. CZone 2 also leads on update cadence (every 5 months vs every 11 months). Mercury Diagnostic App's advantage is iOS requirement (10.0 vs 16.0). On price, rating, 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.

On the App Store both sit at effectively the same score — 3.0 for CZone 2 against 3.0 for Mercury Diagnostic App. That said, the two scores are not equally well evidenced: CZone 2 has 7 ratings behind it against 1, so its average is the more settled of the two.

CZone 2 ships an update every 5 months, Mercury Diagnostic App every 11 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | CZone 2 | Mercury Diagnostic App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (7 ratings)](https://appshunter.io/ios/app/czone-2/id1318932440/reviews) | [3.0 (1 ratings)](https://appshunter.io/ios/app/mercury-diagnostic-app/id1491041580/reviews) |
| Number of ratings | **7** | 1 |
| Positive reviews | 28.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 11 months |
| Monetization | Free | Free |
| Size | 41 MB | 73 MB |
| Requires iOS | 16.0 | **10.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Navico Group APAC Limited](https://appshunter.io/developer/852075955) | [Mercury Marine LLC](https://appshunter.io/developer/1777822540) |

## What reviewers say

### CZone 2

[App page](https://appshunter.io/ios/app/czone-2/id1318932440)

This app offers simplified control of a vessel's electrical systems through a digital interface. It allows for customized modes to optimize operation for various situations, enhancing safety and enjoyment on the water or road. The redesigned user experience makes managing electrical components faster and more intuitive.

**Highlights:** Digital control of electrical components, Customized modes for specific situations, Optimized operation for boating/driving, Intuitive and simplified user experience, Advanced customization of Favorites pages, Loading custom layouts or schematics

**Features:** macOS Compatibility

**In-app purchases:** none


### Mercury Diagnostic App

[App page](https://appshunter.io/ios/app/mercury-diagnostic-app/id1491041580)

This app allows Mercury dealer technicians to perform basic diagnostics on SmartCraft® engines. It provides live engine data, fault information, runtime history, and custom data lists. Full functionality requires a license key and a VesselView Mobile module.

**Highlights:** View live SmartCraft® engine data, Create custom data lists, Obtain active faults, View runtime history, Enter maintenance records, Wireless communication via Bluetooth

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is CZone 2 free?

CZone 2 is free to download, with no in-app purchases.

### Is Mercury Diagnostic App free?

Mercury Diagnostic App is free to download, with no in-app purchases.

### Which has better reviews, CZone 2 or Mercury Diagnostic App?

CZone 2 and Mercury Diagnostic App are both rated 3.0 out of 5 on the App Store, from 7 and 1 ratings respectively.

### Do CZone 2 or Mercury Diagnostic App have ads?

Neither CZone 2 nor Mercury Diagnostic App shows ads.

### Which is updated more often, CZone 2 or Mercury Diagnostic App?

CZone 2 ships an update every 5 months, and Mercury Diagnostic App every 11 months. Most recently, CZone 2 was updated on October 23, 2026 and Mercury Diagnostic App on October 24, 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.*