# Fox Marine vs ONI system

The clearest difference is review sentiment: Fox Marine at 80% against ONI system's 33%. ONI system's advantage is price (Free vs $4.99) and update cadence (every 6 weeks vs every 3 months). On ads, in-app purchases and device support there is nothing between them.

ONI system is free to download; Fox Marine costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Fox Marine ships an update every 3 months, ONI system every 6 weeks. The most recent releases landed on October 20, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Fox Marine | ONI system |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[4.6 (11 ratings)](https://appshunter.io/ios/app/fox-marine/id1017437242/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | **80.0% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 91 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Allen Murrow](https://appshunter.io/developer/1017437241) | [NAM system a.s.](https://appshunter.io/developer/1156895479) |

## What reviewers say

### Fox Marine

[App page](https://appshunter.io/ios/app/fox-marine/id1017437242)

This app connects to marine engine gateways via Bluetooth to display real-time engine data on your iPhone or iPad. It offers table-format viewing with adjustable font sizes and the ability to read and clear engine codes.

**Highlights:** Bluetooth engine gateway connection, Real-time engine data display, Table view with adjustable font size, Read and clear engine codes, Supports various ECM models

**Features:** Vision Pro support

**In-app purchases:** none


### ONI system

[App page](https://appshunter.io/ios/app/oni-system/id1156895480)

Access and view crucial asset data, including lists, real-time positions, and traffic information. Track trips, view routes, and get detailed asset states like temperature and battery levels. Navigate directly to asset locations.

**Highlights:** View asset lists, Real-time asset positions, Google traffic near assets, Logbook of trips, Asset route history, Navigation to asset location, Detailed asset states

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Fox Marine free?

Fox Marine costs $4.99, with no in-app purchases.

### Is ONI system free?

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

### Do Fox Marine or ONI system have ads?

Neither Fox Marine nor ONI system shows ads.

### Which is updated more often, Fox Marine or ONI system?

Fox Marine ships an update every 3 months, and ONI system every 6 weeks. Most recently, Fox Marine was updated on October 20, 2026 and ONI system on October 17, 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.*