Ham Clock

UTC and Local clock and Notes for HAM radio operators

App info

Version :

4.04

Category :

Tools

Update :

June 10, 2025

Installs :

44,752

Developer :

Zoran

Requires Android :

Android Varies with device

Content Rating :

Everyone

Download APK

App description

Android App Analysis and Review: Ham Clock, Developed by Zoran. Listed in Tools Category. Current Version Is 4.04, Updated On 10/06/2025 . According to users reviews on Google Play: Ham Clock. Achieved Over 45 thousand Installs. Ham Clock Currently Has 226 Reviews, Average Rating 4.5 Stars

HamClock is targeted for portable amateur radio operators.
It displays time/date and user notes related to various portable locations on a single screen:
- Local date / time
- GMT date / time
- User notes
- Reminder to transmit callsign every 10 minutes, as required in some countries.

Note can be entered in up to four fields. Use it to record location name, QTH locator, callsign, activation details for SOTA, WCA, WFF or other activities, event info etc.

Multiple notes can be entered and saved for later use.
Note view is scrolled to show longer texts
Hide local clock, leaving even more room for notes

- Large font and contrast for readability in bright daylight
- Light / dark color scheme
- Configurable date and time format, including seconds
- Configurable display timeout
- Optional popup every 10 minutes to remind you to transmit your callsign
- Optional notification played along with the visual reminder

- Share note content as a simple text file, formatted as JSONArray (string). Extension is .hctxt (HamClockTxt) but can be edited in any text editor.
Sharing works best via Gmail or GoogleDrive. With Gmail, open/receive directly from an attachment (no need to download the attachment first). If proper JSONArray file format is detected, "save or discard note" is offered.

Sharing via Bluetooth is less reliable on different devices, because android versions and phone vendors vary in trusted file types for BT transfers, and in permissions needed to access bluetooth storage space (received files).
Sharing via other applications is not tested, and it may or may not work.

PRIVACY / DISCLAIMER
This app does not collect any personal data or share anything with anyone.
There are NO ads.

We are currently offering version 4.04. This is our latest, most optimized version. It is suitable for many different devices. Free download directly apk from the Google Play Store or other versions we're hosting. Moreover, you can download without registration and no login required.

We have more than 2000+ available devices for Samsung, Xiaomi, Huawei, Oppo, Vivo, Motorola, LG, Google, OnePlus, Sony, Tablet ... with so many options, it’s easy for you to choose games or software that fit your device.

It can come in handy if there are any country restrictions or any restrictions from the side of your device on the Google App Store.

What's New

Minor stability improvements
Compile and support for Android 9
Date format YYYY-MM-DD according to ISO 8601

Rate and review on Google Play store

4.5

226 total

5 73.2

4 15.9

3 5.5

2 2.7

1 2.7

Total number of installs (*estimated)

Estimation of total number of installs on Google Play, Approximated from number of ratings and install bounds achieved on Google Play.

Recent Comments

Del LaBo

So far so good. Nice and simple and easy to read in the field. I do have a couple items for the "wish list" 1) Have a second timer that would repeater at what ever timer interval the user selects. I am planning on using this app while doing POTA activations and it would be nice to have a repeatable timer that I could set for say 25 minutes to remind me to respot my activation on the POTA Spotting web page. 2) Be able to select different colors for the text of each of the screen frames. Thanks for a nice app..

Noah Paulette

The app is great by itself but it's not quite what I'm looking for. I need a quick utc reference so what I really need is a widget. There should be an option to easily create a widget within the android sdk so of you could do that sometime I'd be willing to pay for the upgrade.

M Adams

I'll give it points for displaying both local and UTC times together, but there REALLY ought to be an option for displaying seconds as well as minutes. Seems rather pointless without the seconds.

Drew Demarco

An amazing logger would be nice if it was able to sync my logs on laptop to my hamrs app on cellphone it would just be nice no matter where you have hamrs downloaded that it could sync so if you don't have your computer you can still see all your logs on you cell or other devices

Rivke Lela Reid

Tool that does One Thing Well! Thank you, it was hard to find a UTC+local time clock. I do agree that a widget would be a great addition, but I'm perfectly pleased with it as is.