# Combat Clock 4a — 1943 USAAF clock replica

> 1943 USAAF clock replica with GPS and compass features. (iPhone/iPad app by JOHN W GRANHOLM.)

- Source: https://appshunter.io/ios/app/combat-clock-4a/id1481901129 (this page in markdown: same URL + `.md`)
- Developer: [JOHN W GRANHOLM](https://appshunter.io/developer/1464746158)
- Category: Entertainment, Navigation
- Price: $0.99
- Rating: 4.80/5 from 6 App Store ratings
- Age rating: 4+
- Requires: iOS 12.0 · 10 MB
- Languages: English
- Released: 2019-10-14
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/combat-clock-4a/id1481901129/reviews.md

## What is Combat Clock 4a?

Combat Clock 4a is a contemporary replica of a 1943 U.S. Army Air Forces 24-hour bulkhead type clock from an air station's radio room. A 2nd hour hand (green) indicates Zulu time (GMT).  The two red sectors indicate radio silence periods.
Location data is leveraged to display current GPS coordinates, heading and compass bearing that indicates the direction the top of the device (portrait mode) is pointing to (12 is North, 6 South, 3 East and 9 is West). The application is active only when it is in the foreground. No location or personal data is saved or sent from the device. There are no in-application advertisements, or purchases.

## Key features

- 1943 USAAF clock replica
- 24-hour format
- Zulu time indicator
- Radio silence period indicators
- GPS coordinates display
- Heading and compass bearing


## Frequently asked questions about Combat Clock 4a

### What is Combat Clock 4a?

Combat Clock 4a is a digital replica of a 1943 U.S. Army Air Forces 24-hour clock, designed to look like one found in a radio room. It also provides GPS and compass functionalities.

### Does Combat Clock 4a have ads?

No, Combat Clock 4a does not contain any in-application advertisements. It is a paid app with no ads.

### What devices does Combat Clock 4a support?

Combat Clock 4a is available for iPhone, iPad, and iPod devices, as indicated by its supported devices list.

### How often is Combat Clock 4a updated?

The latest version, 1.3.0, was released on May 7, 2020. The app was originally released on October 14, 2019.

### What is the age rating for Combat Clock 4a?

Combat Clock 4a has an age rating of 4+, making it suitable for a wide range of users.

### Does Combat Clock 4a collect personal data?

No, Combat Clock 4a is designed with privacy in mind. It does not save or send any location or personal data from your device.

### What is the price of Combat Clock 4a?

Combat Clock 4a is a paid application, priced at $0.99.

### What is the user sentiment for Combat Clock 4a?

Combat Clock 4a has a high user rating of 4.8 stars from 6 ratings, suggesting positive user sentiment.

## Version history (last 1 release)

### 1.3.0 — 2020-05-07

Updated for iOS 13.4.1 and Xcode 11.4.1 and to resolve potential UTC conversion issue (Possible crash from unwrapping nil date string).

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## More apps by JOHN W GRANHOLM

- [Combat Clock 1a](https://appshunter.io/ios/app/combat-clock-1a/id1464746159)
- [Combat Clock 2a](https://appshunter.io/ios/app/combat-clock-2a/id1471648729)
- [Combat Clock 3a](https://appshunter.io/ios/app/combat-clock-3a/id1475527383)

All apps by JOHN W GRANHOLM: https://appshunter.io/developer/1464746158

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*