Graypen Group Directory vs DRFT MRKS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Graypen Group Directory
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The Graypen Group Directory is the easiest way to find details of the services and locations covered by the Graypen Group of companies. Start by selecting your company then choose from a list of locations and services to find the department contact details you need. You can call or email straight from the app as well as access the 24 hour support team details for urgent enquiries.
DRFT MRKS
This application uses AI and deep learning to accurately measure a vessel's draft from a short HD video. It aims to provide a verifiable source of truth for calculating vessel displacement, improving accuracy in determining loaded cargo and equipment.
- AI/Deep Learning technology
- Measures vessel draft from video
- Improves draft reading accuracy
- Verifiable source of truth
- Calculates vessel displacement
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Tymor Marine's breakthrough DRFT MRKS technology measures a vessel's draft from a 30-second, 1080p HD video. It is an industry-leading AI/Deep Learning technology developed to improve the traditional draft reading process. DRFT MRKS aims to allow anyone to read draft marks with the same skill and accuracy as an experienced mariner. Discrepancies can lead to incorrect displacement measurements, spark disputes over cargo quantities, and impose operational limitations on vessels. DRFT MRKS provides a single verifiable source of truth when calculating vessel displacement using draft marks, helping to improve accuracy when determining loaded cargo/equipment.
Screenshots
Verdict
The clearest difference is update cadence: DRFT MRKS at monthly against Graypen Group Directory's every 6 months. Graypen Group Directory's advantage is device support (3 vs 1) and iOS requirement (11.0 vs 18.0). On price, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Graypen Group Directory ships an update every 6 months, DRFT MRKS monthly. The most recent releases landed on October 13, 2026 and October 20, 2026 respectively.
| Parameter | Graypen Group Directory | DRFT MRKS |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 6 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 11.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 54 MB | 60 MB |
| Age rating | 4+ | 4+ |
| Developer | Passport-IT Limited | Tymor Marine Ltd |
In-app purchases
Graypen Group Directory
No in-app purchases
DRFT MRKS
No in-app purchases
Questions
Is Graypen Group Directory free?
Is DRFT MRKS free?
Do Graypen Group Directory or DRFT MRKS have ads?
Which is updated more often, Graypen Group Directory or DRFT MRKS?
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