# BPK vs MarsMD Toolbox

The clearest difference is update cadence: BPK at every 5 weeks against MarsMD Toolbox's every 37 months. MarsMD Toolbox's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

BPK ships an update every 5 weeks, MarsMD Toolbox every 37 months. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | BPK | MarsMD Toolbox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (5 ratings)](https://appshunter.io/ios/app/bpk-probe-datalink/id1547084540/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 37 months |
| Monetization | Ad-supported | — |
| Size | 37 MB | 18 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Sabhya Technologies LLC](https://appshunter.io/developer/1533158995) | [ANDRII CHEKHIVSKYI](https://appshunter.io/developer/1654707129) |

## What reviewers say

### 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


### MarsMD Toolbox

[App page](https://appshunter.io/ios/app/marsmd-toolbox/id6444441313)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BPK free?

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

### Is MarsMD Toolbox free?

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

### Do BPK or MarsMD Toolbox have ads?

Neither BPK nor MarsMD Toolbox shows ads.

### Which is updated more often, BPK or MarsMD Toolbox?

BPK ships an update every 5 weeks, and MarsMD Toolbox every 37 months. Most recently, BPK was updated on October 2, 2026 and MarsMD Toolbox on October 1, 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.*