# Nautical Ship Flags vs CES Trainer

The clearest difference is update cadence: CES Trainer at daily against Nautical Ship Flags's every 3 weeks. Nautical Ship Flags's advantage is device support (3 vs 1) and iOS requirement (15.2 vs 17.4). On price, ads and in-app purchases 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 CES Trainer 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, CES Trainer daily. The most recent releases landed on September 5, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Nautical Ship Flags | CES Trainer |
| --- | --- | --- |
| 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 | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 7 MB | 59 MB |
| Requires iOS | **15.2** | 17.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Stanislav Cekunov](https://appshunter.io/developer/1085076843) | [Yevgenii Kryzhanivskyi](https://appshunter.io/developer/1778319692) |

## 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 |


### CES Trainer

[App page](https://appshunter.io/ios/app/ces-trainer/id6737857414)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy me a beer | $4.99 | one-time |


## Frequently asked questions

### Is Nautical Ship Flags free?

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

### Is CES Trainer free?

CES Trainer is free to download, with in-app purchases available.

### Do Nautical Ship Flags or CES Trainer have ads?

Neither Nautical Ship Flags nor CES Trainer shows ads.

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

Nautical Ship Flags ships an update every 3 weeks, and CES Trainer daily. Most recently, Nautical Ship Flags was updated on September 5, 2026 and CES Trainer on September 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.*