# SSV Mobile vs ClassNK Onboard Image Logger

SSV Mobile and ClassNK Onboard Image Logger are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

SSV Mobile ships an update every 6 months, ClassNK Onboard Image Logger every 9 months. The most recent releases landed on January 23, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | SSV Mobile | ClassNK Onboard Image Logger |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 9 months |
| Size | 67 MB | 47 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Japan Radio Co., Ltd.](https://appshunter.io/developer/932220259) | [NIPPON KAIJI KYOKAI GENERAL INCORPORATED FOUNDATION](https://appshunter.io/developer/956676437) |

## What reviewers say

### SSV Mobile

[App page](https://appshunter.io/ios/app/ssv-mobile/id1434022656)

**Features:** macOS Compatibility

**In-app purchases:** none


### ClassNK Onboard Image Logger

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

**In-app purchases:** none


## Frequently asked questions

### Is SSV Mobile free?

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

### Is ClassNK Onboard Image Logger free?

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

### Do SSV Mobile or ClassNK Onboard Image Logger have ads?

Neither SSV Mobile nor ClassNK Onboard Image Logger shows ads.

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

SSV Mobile ships an update every 6 months, and ClassNK Onboard Image Logger every 9 months. Most recently, SSV Mobile was updated on January 23, 2026 and ClassNK Onboard Image Logger on September 20, 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.*