# ClassNK Onboard Image Logger vs DSVPM

The clearest difference is update cadence: DSVPM at every 3 months against ClassNK Onboard Image Logger's every 9 months. 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.

ClassNK Onboard Image Logger ships an update every 9 months, DSVPM every 3 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ClassNK Onboard Image Logger | DSVPM |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 months** |
| Size | 48 MB | 151 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [NIPPON KAIJI KYOKAI GENERAL INCORPORATED FOUNDATION](https://appshunter.io/developer/956676437) | [Cinc Systems, LLC](https://appshunter.io/developer/673135886) |

## What reviewers say

### ClassNK Onboard Image Logger

[App page](https://appshunter.io/ios/app/classnk-onboard-image-logger/id1614585559)

**In-app purchases:** none


### DSVPM

[App page](https://appshunter.io/ios/app/dsvpm/id6447594083)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ClassNK Onboard Image Logger free?

ClassNK Onboard Image Logger is free to download, with no in-app purchases.

### Is DSVPM free?

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

### Do ClassNK Onboard Image Logger or DSVPM have ads?

Neither ClassNK Onboard Image Logger nor DSVPM shows ads.

### Which is updated more often, ClassNK Onboard Image Logger or DSVPM?

ClassNK Onboard Image Logger ships an update every 9 months, and DSVPM every 3 months. Most recently, ClassNK Onboard Image Logger was updated on October 25, 2026 and DSVPM 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.*