# Authentic Drilling vs ClassNK Onboard Image Logger

The clearest difference is update cadence: Authentic Drilling at monthly against ClassNK Onboard Image Logger's every 9 months. Authentic Drilling also leads on iOS requirement (12.4 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.

Authentic Drilling ships an update monthly, ClassNK Onboard Image Logger every 9 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Authentic Drilling | ClassNK Onboard Image Logger |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/authentic-drilling/id1612461569/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 9 months |
| Monetization | Free | — |
| Size | 28 MB | 48 MB |
| Requires iOS | **12.4** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Authentic Drilling](https://appshunter.io/developer/1612461571) | [NIPPON KAIJI KYOKAI GENERAL INCORPORATED FOUNDATION](https://appshunter.io/developer/956676437) |

## What reviewers say

### Authentic Drilling

[App page](https://appshunter.io/ios/app/authentic-drilling/id1612461569)

Manage projects efficiently with this app. Track timelines, assign tasks, and organize project resources like equipment and documents. Includes built-in meeting functionality for seamless collaboration.

**Highlights:** Project timeline tracking, Task assignment, Equipment management, Document management, Meeting functionality

**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 Authentic Drilling free?

Authentic Drilling 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 Authentic Drilling or ClassNK Onboard Image Logger have ads?

Neither Authentic Drilling nor ClassNK Onboard Image Logger shows ads.

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

Authentic Drilling ships an update monthly, and ClassNK Onboard Image Logger every 9 months. Most recently, Authentic Drilling was updated on October 24, 2026 and ClassNK Onboard Image Logger 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.*