Fox Marine vs ONI system
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fox Marine
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.
- Bluetooth engine gateway connection
- Real-time engine data display
- Table view with adjustable font size
- Read and clear engine codes
- Supports various ECM models
Read full descriptionHide full description
The Fox Marine App connects to Fox Marine Engine Gateways via Bluetooth to display your boat's engine data on your iPhone or iPad. Engine Gateways are available for MEFI-1/2/3/4/5/6 ECMs, Motorola ECM/PCM 555 variants, ECM-07/08 (Volvo Penta 3G/4G, PCM/Crusader 3G/4G, Indmar 3G/4G, Ilmor 4G), and PCM-09. Engine data is viewable in table (list view) format with options for either normal font or large font size. The ability to read and clear engine codes is now available for all Engine Gateways. Fox Marine Engine Gateways are available at http://fox-marine.com. Data from twin engines cannot be viewed simultaneously with this App (users must switch between each engine on the engine gateway selection screen).
ONI system
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.
- View asset lists
- Real-time asset positions
- Google traffic near assets
- Logbook of trips
- Asset route history
- Navigation to asset location
- Detailed asset states
Read full descriptionHide full description
The ONI system app displays the most important assets data. After login in the ONI system you gain access to view: - lists of assets, - actual assets positions, - Google traffic near the asset, - list of trips (logbook), - routes driven by the asset, - navigation to the actual asset's position, - detailed states of the asset (e.g. temperature, battery charge level, trip type etc.).
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Fox Marine | ONI system |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 4.6 (11 ratings) — better | — |
| Positive reviews | 80.0% of reviews — better | 33.3% of reviews |
| Number of ratings | 11 — better | — |
| Update frequency | Every 3 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 91 MB |
| Age rating | 4+ | 4+ |
| Developer | Allen Murrow | NAM system a.s. |
Customer experience
Fox Marine
ONI system
In-app purchases
Fox Marine
No in-app purchases
ONI system
No in-app purchases
