# TOPforms vs ClassNK Onboard Image Logger

The clearest difference is update cadence: TOPforms at every 3 weeks against ClassNK Onboard Image Logger's every 9 months. TOPforms also leads on iOS requirement (10.0 vs 15.6). 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.

TOPforms ships an update every 3 weeks, ClassNK Onboard Image Logger every 9 months. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | TOPforms | ClassNK Onboard Image Logger |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 9 months |
| Size | 12 MB | 47 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Smart Form Solutions BV](https://appshunter.io/developer/1462257775) | [NIPPON KAIJI KYOKAI GENERAL INCORPORATED FOUNDATION](https://appshunter.io/developer/956676437) |

## What reviewers say

### TOPforms

[App page](https://appshunter.io/ios/app/topforms-iri/id1495799587)

**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 TOPforms free?

TOPforms 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 TOPforms or ClassNK Onboard Image Logger have ads?

Neither TOPforms nor ClassNK Onboard Image Logger shows ads.

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

TOPforms ships an update every 3 weeks, and ClassNK Onboard Image Logger every 9 months. Most recently, TOPforms was updated on October 10, 2026 and ClassNK Onboard Image Logger on October 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*