# DRFT MRKS vs Maritime Master

The clearest difference is rating: DRFT MRKS at 5.0 against Maritime Master's 3.0. DRFT MRKS also leads on in-app purchases (none vs 1). Maritime Master's advantage is update cadence (daily vs every 4 weeks). On price, ratings volume, ads and monetization model there is nothing between them.

Both are free to download. Maritime Master sells 1 one-off in-app purchase. DRFT MRKS asks for nothing beyond the download.

DRFT MRKS holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

DRFT MRKS ships an update every 4 weeks, Maritime Master daily. The most recent releases landed on August 20, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | DRFT MRKS | Maritime Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/drft-mrks/id6741070099/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/maritime-master-calcdeck/id6760967809/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Daily** |
| Monetization | Free | Free |
| Size | 49 MB | 7 MB |
| Requires iOS | 18.0 | **17.6** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 9+ |
| Developer | [Tymor Marine Ltd](https://appshunter.io/developer/1769206109) | [MARITIME MASTER LIMITED](https://appshunter.io/developer/1107589346) |

## What reviewers say

### DRFT MRKS

[App page](https://appshunter.io/ios/app/drft-mrks/id6741070099)

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.

**Highlights:** AI/Deep Learning technology, Measures vessel draft from video, Improves draft reading accuracy, Verifiable source of truth, Calculates vessel displacement

**Features:** macOS Compatibility

**In-app purchases:** none


### Maritime Master

[App page](https://appshunter.io/ios/app/maritime-master-calcdeck/id6760967809)

This app provides a comprehensive suite of 88 professional maritime calculators for navigation, celestial observation, tides, stability, weather, engineering, and more. It's designed for maritime professionals and enthusiasts, offering offline functionality and citing all formulas with their official sources.

**Highlights:** 88 professional maritime calculators, Offline functionality, Navigation calculations, Celestial observation tools, Stability and cargo calculations, Unit converters

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CalcDeck Pro | $14.99 | one-time |


## Frequently asked questions

### Is DRFT MRKS free?

DRFT MRKS is free to download, with no in-app purchases.

### Is Maritime Master free?

Maritime Master is free to download, with in-app purchases available.

### Which has better reviews, DRFT MRKS or Maritime Master?

DRFT MRKS is rated higher. DRFT MRKS averages 5.0 out of 5 from 1 ratings, while Maritime Master averages 3.0 from 1 ratings.

### Do DRFT MRKS or Maritime Master have ads?

Neither DRFT MRKS nor Maritime Master shows ads.

### Which is updated more often, DRFT MRKS or Maritime Master?

DRFT MRKS ships an update every 4 weeks, and Maritime Master daily. Most recently, DRFT MRKS was updated on August 20, 2026 and Maritime Master on September 23, 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.*