# CB College vs Nautical Ship Flags

The clearest difference is in-app purchases: CB College at none against Nautical Ship Flags's 2. Nautical Ship Flags's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads, device support and iOS requirement 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. CB College asks for nothing beyond the download.

CB College ships an update every 2 months, Nautical Ship Flags every 3 weeks. The most recent releases landed on September 9, 2026 and September 5, 2026 respectively.

## The numbers

| Metric | CB College | Nautical Ship Flags |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (15 ratings)](https://appshunter.io/ios/app/nautical-ship-flags/id6737554146/reviews)** |
| Number of ratings | — | **15** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 47 MB | 7 MB |
| Requires iOS | **14.0** | 15.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CB HOLDINGS INC.](https://appshunter.io/developer/1716852341) | [Stanislav Cekunov](https://appshunter.io/developer/1085076843) |

## What reviewers say

### CB College

[App page](https://appshunter.io/ios/app/cb-college/id6472254231)

**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 CB College free?

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

### Is Nautical Ship Flags free?

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

### Do CB College or Nautical Ship Flags have ads?

Neither CB College nor Nautical Ship Flags shows ads.

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

CB College ships an update every 2 months, and Nautical Ship Flags every 3 weeks. Most recently, CB College was updated on September 9, 2026 and Nautical Ship Flags on September 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.*