# SeaRoll vs Maritime Master

The clearest difference is review sentiment: SeaRoll at 100% against Maritime Master's 0%. Maritime Master's advantage is update cadence (daily vs every 3 weeks) and monetization model (free vs free with in-app purchases). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. SeaRoll sells 1 one-off in-app purchase and Maritime Master sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

SeaRoll ships an update every 3 weeks, Maritime Master daily. The most recent releases landed on September 10, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | SeaRoll | Maritime Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (1 ratings)](https://appshunter.io/ios/app/maritime-master-calcdeck/id6760967809/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Daily** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 13 MB | 7 MB |
| Requires iOS | 18.6 | **17.6** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 9+ |
| Developer | [Vladyslav Yarmak](https://appshunter.io/developer/1456545549) | [MARITIME MASTER LIMITED](https://appshunter.io/developer/1107589346) |

## What reviewers say

### SeaRoll

[App page](https://appshunter.io/ios/app/searoll/id6756269783)

This application provides a real-time display of a vessel's rolling angle, allowing users to record and review sessions during navigation. It's designed for simplicity and readability, enabling quick reporting and discussion of roll data.

**Highlights:** Live roll angle display, One-tap roll recording, Playback and review of recorded sessions, Export and share recordings, Simple and readable interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Logo | $0.99 | one-time |


### 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 SeaRoll free?

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

### Is Maritime Master free?

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

### Do SeaRoll or Maritime Master have ads?

Neither SeaRoll nor Maritime Master shows ads.

### Which is updated more often, SeaRoll or Maritime Master?

SeaRoll ships an update every 3 weeks, and Maritime Master daily. Most recently, SeaRoll was updated on September 10, 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.*