# Fox Marine vs BPK

The clearest difference is price: BPK at Free against Fox Marine's $4.99. BPK also leads on review sentiment (100% vs 80%). Fox Marine's advantage is rating (4.6 vs 4.2). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

BPK 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 holds the better App Store score, 4.6 against 4.2. Both are backed by a comparable volume of ratings — 11 and 5 respectively. Written reviews complicate that: 80% of Fox Marine's written reviews are positive against 100% of BPK's, so the app with the better star average is not the one people write more warmly about.

Fox Marine ships an update every 2 months, BPK every 5 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Fox Marine | BPK |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[4.6 (11 ratings)](https://appshunter.io/ios/app/fox-marine/id1017437242/reviews)** | [4.2 (5 ratings)](https://appshunter.io/ios/app/bpk-probe-datalink/id1547084540/reviews) |
| Number of ratings | **11** | 5 |
| Positive reviews | 80.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Paid | **Ad-supported** |
| Size | 1 MB | 37 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Allen Murrow](https://appshunter.io/developer/1017437241) | [Sabhya Technologies LLC](https://appshunter.io/developer/1533158995) |

## 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


### BPK

[App page](https://appshunter.io/ios/app/bpk-probe-datalink/id1547084540)

This utility app measures common mode voltage on motor shafts to assess bearing discharge risk. It can also test the performance of bearing protection solutions, recording and maintaining readings for analysis.

**Highlights:** Measures common mode voltage on motor shafts, Assesses risk of discharge through motor bearings, Tests performance of bearing protection solutions, Records and maintains readings, Complete kit for testing

**Features:** macOS Compatibility, 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 BPK free?

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

### Which has better reviews, Fox Marine or BPK?

Fox Marine is rated higher. Fox Marine averages 4.6 out of 5 from 11 ratings, while BPK averages 4.2 from 5 ratings.

### Do Fox Marine or BPK have ads?

Neither Fox Marine nor BPK shows ads.

### Which is updated more often, Fox Marine or BPK?

Fox Marine ships an update every 2 months, and BPK every 5 weeks. Most recently, Fox Marine was updated on November 1, 2026 and BPK on November 3, 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.*