# Nautical Ship Flags vs Signal Deck

The clearest difference is ads: Nautical Ship Flags at none against Signal Deck's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Nautical Ship Flags sells 2 in-app purchases, starting at $0.99 per 7 days and Signal Deck sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Nautical Ship Flags ships an update every 3 weeks, Signal Deck every 2 weeks. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Nautical Ship Flags | Signal Deck |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (15 ratings)](https://appshunter.io/ios/app/nautical-ship-flags/id6737554146/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 7 MB | 54 MB |
| Requires iOS | 15.2 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Stanislav Cekunov](https://appshunter.io/developer/1085076843) | [Ernest Jessop](https://appshunter.io/developer/1883136323) |

## What reviewers say

### 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 |


### Signal Deck

[App page](https://appshunter.io/ios/app/signal-deck-ics-flag-trainer/id6760197679)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Signal Deck Pro | $0.99 | one-time |


## Frequently asked questions

### Is Nautical Ship Flags free?

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

### Is Signal Deck free?

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

### Do Nautical Ship Flags or Signal Deck have ads?

Signal Deck shows ads; Nautical Ship Flags does not.

### Which is updated more often, Nautical Ship Flags or Signal Deck?

Nautical Ship Flags ships an update every 3 weeks, and Signal Deck every 2 weeks. Most recently, Nautical Ship Flags was updated on November 4, 2026 and Signal Deck on November 5, 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.*