# Seabook+ vs Nautical Ship Flags

The clearest difference is review sentiment: Seabook+ at 53% against Nautical Ship Flags's 0%. Seabook+ also leads on in-app purchases (none vs 2) and iOS requirement (13.0 vs 15.2). Nautical Ship Flags's advantage is price (Free vs $6.99) and rating (4.6 vs 4.0). On ads and device support there is nothing between them.

Nautical Ship Flags is free to download; Seabook+ costs $6.99 up front. Nautical Ship Flags sells 2 in-app purchases, starting at $0.99 per 7 days. Seabook+ asks for nothing beyond the download.

Nautical Ship Flags holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: Nautical Ship Flags has 15 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 53% of Seabook+'s written reviews are positive against 0% of Nautical Ship Flags's, so the app with the better star average is not the one people write more warmly about.

Seabook+ ships an update every 35 months, Nautical Ship Flags every 3 weeks. The most recent releases landed on October 12, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Seabook+ | Nautical Ship Flags |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | [4.0 (3 ratings)](https://appshunter.io/ios/app/seabook-plus/id1517249755/reviews) | **[4.6 (15 ratings)](https://appshunter.io/ios/app/nautical-ship-flags/id6737554146/reviews)** |
| Number of ratings | 3 | **15** |
| Positive reviews | **53.3% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 35 months | **Every 3 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 37 MB | 7 MB |
| Requires iOS | **13.0** | 15.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Ozgur GUNES](https://appshunter.io/developer/708215144) | [Stanislav Cekunov](https://appshunter.io/developer/1085076843) |

## What reviewers say

### Seabook+

[App page](https://appshunter.io/ios/app/seabook-plus/id1517249755)

This app provides comprehensive maritime information for professionals and enthusiasts. It offers tools for navigational and technical computations, designed for easy use at sea with offline accessibility and a user-friendly interface.

**Highlights:** Comprehensive maritime information, Navigational and technical computations, Offline accessibility, User-friendly interface, Information for marine professionals, Knowledge for sea enthusiasts

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

**In-app purchases:** none


### Nautical Ship Flags

[App page](https://appshunter.io/ios/app/nautical-ship-flags/id6737554146)

Explore maritime signal codes and Morse code with interactive quizzes and detailed flag information. Track your learning progress with an analytics view and practice signaling using your phone's flashlight. This app offers full offline functionality for continuous learning.

**Highlights:** Interactive quizzes, Flag details and reference, Flashlight Morse signaling, Progress tracking, Offline functionality, Analytics view

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $0.99 | per 7 days |
| Lifetime | $2.99 | one-time |


## Frequently asked questions

### Is Seabook+ free?

Seabook+ costs $6.99, with no in-app purchases.

### Is Nautical Ship Flags free?

Nautical Ship Flags is free to download, with in-app purchases available.

### Which has better reviews, Seabook+ or Nautical Ship Flags?

Nautical Ship Flags is rated higher. Seabook+ averages 4.0 out of 5 from 3 ratings, while Nautical Ship Flags averages 4.6 from 15 ratings.

### Do Seabook+ or Nautical Ship Flags have ads?

Neither Seabook+ nor Nautical Ship Flags shows ads.

### Which is updated more often, Seabook+ or Nautical Ship Flags?

Seabook+ ships an update every 35 months, and Nautical Ship Flags every 3 weeks. Most recently, Seabook+ was updated on October 12, 2026 and Nautical Ship Flags on October 14, 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.*