GismanBluetooth® vs DRFT MRKS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GismanBluetooth®
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• Program your lanterns thanks to the App Gisman Bluetooth®. • Access to GISMAN Bluetooth® app is secured and subject to the mandatory entry of a username and password furnished by GISMAN upon first connection and at regular intervals. • The application works even if Internet connectivity is non-existent (especially when operating on a lantern at sea). Data are indeed stored on the phone and will be sent to the platform when a network will be found. • Connect you to the lantern will allow, among others functions: o to program the range, flash character, battery energy-saving mode) … o to easily configure the AIS information o to protect the configuration with a security PIN code o to check the lantern status o share the data via email • With the option WatchAtoN, you can transmit the lantern’s data collected by the App towards the GISMAN Web portal. • With the option Maintenance Tool, you can fulfill and send your maintenance reporting to the GISMAN Web portal. • The App and its modules are cybersecured, to protect your personal data and those of your aids to navigation. • The app is available in 4 languages: English, French, Spanish and Portuguese.
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 GismanBluetooth®'s every 3 months. GismanBluetooth®'s advantage is device support (3 vs 1) and iOS requirement (12.2 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.
GismanBluetooth® ships an update every 3 months, DRFT MRKS monthly. The most recent releases landed on October 30, 2026 and October 20, 2026 respectively.
| Parameter | GismanBluetooth® | DRFT MRKS |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.2 — better | 18.0 |
| Further details — not scored | ||
| Size | 38 MB | 60 MB |
| Age rating | 4+ | 4+ |
| Developer | GISMAN | Tymor Marine Ltd |
In-app purchases
GismanBluetooth®
No in-app purchases
DRFT MRKS
No in-app purchases
Questions
Is GismanBluetooth® free?
Is DRFT MRKS free?
Do GismanBluetooth® or DRFT MRKS have ads?
Which is updated more often, GismanBluetooth® or DRFT MRKS?
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