# HistoMaster U.S.A vs Nautical Signal Code Flags

The clearest difference is price: HistoMaster U.S.A at Free against Nautical Signal Code Flags's $1.99. HistoMaster U.S.A also leads on device support (4 vs 2). Nautical Signal Code Flags's advantage is in-app purchases (none vs 1) and iOS requirement (13.2 vs 15.0). On update cadence and ads there is nothing between them.

HistoMaster U.S.A is free to download; Nautical Signal Code Flags costs $1.99 up front. HistoMaster U.S.A sells 1 one-off in-app purchase. Nautical Signal Code Flags asks for nothing beyond the download.

HistoMaster U.S.A ships an update every 50 months, Nautical Signal Code Flags every 30 months. The most recent releases landed on November 3, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | HistoMaster U.S.A | Nautical Signal Code Flags |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/histomaster-usa/id1123335218/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 50 months | **Every 30 months** |
| Monetization | Freemium | — |
| Size | 56 MB | 10 MB |
| Requires iOS | 15.0 | **13.2** |
| Devices | **iPhone, iPad, iPod, Apple TV** | iPad, Apple TV |
| Age rating | 4+ | 4+ |
| Developer | [Alexandre Minard](https://appshunter.io/developer/285597460) | [Ventura Educational Systems](https://appshunter.io/developer/371324172) |

## What reviewers say

### HistoMaster U.S.A

[App page](https://appshunter.io/ios/app/histomaster-usa/id1123335218)

Explore over 7 centuries of U.S. history through interactive timelines, quizzes, and challenges. Learn about presidents, wars, and key events, earning troops to conquer territories as you progress. Save progress across devices with iCloud support.

**Highlights:** Interactive timelines, Quizzes and challenges, President and war exploration, Progress tracking, Multi-profile support, iCloud saving

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Full version | $0.99 | one-time |


### Nautical Signal Code Flags

[App page](https://appshunter.io/ios/app/nautical-signal-code-flags/id1598190434)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HistoMaster U.S.A free?

HistoMaster U.S.A is free to download, with in-app purchases available.

### Is Nautical Signal Code Flags free?

Nautical Signal Code Flags costs $1.99, with no in-app purchases.

### Do HistoMaster U.S.A or Nautical Signal Code Flags have ads?

Neither HistoMaster U.S.A nor Nautical Signal Code Flags shows ads.

### Which is updated more often, HistoMaster U.S.A or Nautical Signal Code Flags?

HistoMaster U.S.A ships an update every 50 months, and Nautical Signal Code Flags every 30 months. Most recently, HistoMaster U.S.A was updated on November 3, 2026 and Nautical Signal Code Flags on November 11, 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.*