# HamClock vs Mount Prospect EMA

The clearest difference is price: Mount Prospect EMA at Free against HamClock's $0.99. HamClock's advantage is device support (4 vs 2) and iOS requirement (13.4 vs 18.6). On update cadence, ads and in-app purchases there is nothing between them.

Mount Prospect EMA is free to download; HamClock costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

HamClock ships an update every 4 months, Mount Prospect EMA every 3 months. The most recent releases landed on October 7, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | HamClock | Mount Prospect EMA |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[3.0 (24 ratings)](https://appshunter.io/ios/app/hamclock/id349645947/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 47.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | Paid | — |
| Size | 1 MB | 55 MB |
| Requires iOS | **13.4** | 18.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ben Sinclair](https://appshunter.io/developer/349645950) | [Village of Mount Prospect (IL)](https://appshunter.io/developer/1689442757) |

## What reviewers say

### HamClock

[App page](https://appshunter.io/ios/app/hamclock/id349645947)

This app provides a clear display of local and UTC time, along with sunrise/sunset and grid square information for amateur radio operators. It features an interactive map to find grid squares and displays the gray line. Optimized for both phone and watch, it's a useful tool for ham radio enthusiasts.

**Highlights:** Local and UTC time display, Sunrise/sunset times, Grid square locator, Interactive grid square map, Gray line display, Watch compatibility

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


### Mount Prospect EMA

[App page](https://appshunter.io/ios/app/mount-prospect-ema/id6449500912)

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

**In-app purchases:** none


## Frequently asked questions

### Is HamClock free?

HamClock costs $0.99, with no in-app purchases.

### Is Mount Prospect EMA free?

Mount Prospect EMA is free to download, with no in-app purchases.

### Do HamClock or Mount Prospect EMA have ads?

Neither HamClock nor Mount Prospect EMA shows ads.

### Which is updated more often, HamClock or Mount Prospect EMA?

HamClock ships an update every 4 months, and Mount Prospect EMA every 3 months. Most recently, HamClock was updated on October 7, 2026 and Mount Prospect EMA on October 4, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*