# Seafarer Documents Manager vs Maritime Master

The clearest difference is update cadence: Maritime Master at daily against Seafarer Documents Manager's fortnightly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Seafarer Documents Manager sells 2 in-app purchases, starting at $0.99 per month and Maritime Master sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Seafarer Documents Manager ships an update fortnightly, Maritime Master daily. The most recent releases landed on October 3, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Seafarer Documents Manager | 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 | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Daily** |
| Monetization | — | Free |
| Size | 66 MB | 7 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Mykhaylo Osypov](https://appshunter.io/developer/1875331449) | [MARITIME MASTER LIMITED](https://appshunter.io/developer/1107589346) |

## What reviewers say

### Seafarer Documents Manager

[App page](https://appshunter.io/ios/app/seafarer-documents-manager/id6758860675)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscribe | $0.99 | per month |
| Seafarer Documents Manager Premium | $11.99 | 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 Seafarer Documents Manager free?

Seafarer Documents Manager 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 Seafarer Documents Manager or Maritime Master have ads?

Neither Seafarer Documents Manager nor Maritime Master shows ads.

### Which is updated more often, Seafarer Documents Manager or Maritime Master?

Seafarer Documents Manager ships an update fortnightly, and Maritime Master daily. Most recently, Seafarer Documents Manager was updated on October 3, 2026 and Maritime Master on October 19, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*