# Nautical Ship Flags vs Jblfmu

The clearest difference is in-app purchases: Jblfmu at none against Nautical Ship Flags's 2. Jblfmu also leads on iOS requirement (13.0 vs 15.2). Nautical Ship Flags's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads 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. Jblfmu asks for nothing beyond the download.

Nautical Ship Flags ships an update every 3 weeks, Jblfmu every 2 months. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Nautical Ship Flags | Jblfmu |
| --- | --- | --- |
| 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 | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 7 MB | 84 MB |
| Requires iOS | 15.2 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stanislav Cekunov](https://appshunter.io/developer/1085076843) | [John B. Lacson Foundation, Inc.](https://appshunter.io/developer/1878333505) |

## 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 |


### Jblfmu

[App page](https://appshunter.io/ios/app/jblfmu/id6759367528)

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

**In-app purchases:** none


## Frequently asked questions

### Is Nautical Ship Flags free?

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

### Is Jblfmu free?

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

### Do Nautical Ship Flags or Jblfmu have ads?

Neither Nautical Ship Flags nor Jblfmu shows ads.

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

Nautical Ship Flags ships an update every 3 weeks, and Jblfmu every 2 months. Most recently, Nautical Ship Flags was updated on October 24, 2026 and Jblfmu on October 10, 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.*