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Android Apps > Personalization > 12-hour world clock
12-hour world clock icon

12-hour world clock

by Vlad Simionescu · Personalization · Free
On Google Play since October 2016 · Data updated 2026-10-16
Google Play

12-hour world clock is made and published by Vlad Simionescu. AppBrain is an independent app data site and isn't affiliated with Vlad Simionescu. The app name, icon, screenshots and description belong to Vlad Simionescu and are shown as published on Google Play.

AppBrain's verdict

Established
Total installs
13 thousand
Rating on Google Play
3.57
46 ratings
Last updated
October 16, 2025

12-hour world clock has 13 thousand installs. It doesn't have enough ratings yet to judge what users think.

Installs

Tracked by AppBrain
Last 30 days
77
Play install range
10+ thousand
Launched
October 2016

Installs over time

12-hour world clock has been installed 13 thousand times. Over the past 30 days, it has been installed 77 times.

Rankings

Google Play top charts

Google Play Rankings for 12-hour world clock

This app is not ranked

Competitors

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Releases

Updates seen on Google Play
Version
3.0.1
Launched
October 2016
  • Oct 16, 2025UpdateVersion 3.0.1
  • Sep 16, 2025UpdateVersion 3.0
  • Sep 26, 2022Installs10,000+ installs
  • Sep 7, 2019CategoryMoved from Tools to Personalization
  • Jun 15, 2019Installs5,000+ installs
Show all changes Show fewer

User feedback

Ratings and reviews on Google Play

Google Play Rating history and histogram

26
0
6
0
13

Comments on 12-hour world clock for Android

★★★★★ Joe · Sep 12, 2017
An interesting demonstration of how to display an app on the lock screen
★★★★★ Grace Brumskill · May 4, 2021
I installed the 12-hour world clock because my watch was giving me the wrong time.
★☆☆☆☆ nilesh patel · Mar 9, 2017
... Takes u to a web page as the description says and is not user-friendly... Thanks but uninstalling it now.

Technology

Found in the app by AppBrain
Ads
No ads
Price
Free
Libraries
21
App size
10.5 MB
Needs Android
4.4+
Content rating
Everyone

Technologies used by 12-hour world clock

11 permissions · 21 libraries
Subscribe to see full permission and library details

About the app and developer

About 12-hour world clock

12-hour world clock is a personalization app developed by Vlad Simionescu.

Install Statistics

12-hour world clock has been installed 13 thousand times. In the last 30 days, the app was installed 77 times.

User Ratings

12-hour world clock is rated 3.57 out of 5 stars. The rating is based on 46 ratings.

App Information

12-hour world clock is freely available from Google Play. The app size is 10.46 MB. The latest version available is 3.0.1. The last update was on October 16, 2025.

Technical Requirements

12-hour world clock requires Android 4.4+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since October 2016.

App Performance Report

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Developer information for Vlad Simionescu

Vlad Simionescu

intelnav@yahoo.com

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Store listing

By Vlad Simionescu, from Google Play

“world time at a glance / lock screen analog world clock”

12-hour world clock Screenshot 1 of 8
12-hour world clock Screenshot 2 of 8
12-hour world clock Screenshot 3 of 8
12-hour world clock Screenshot 4 of 8
12-hour world clock Screenshot 5 of 8
12-hour world clock Screenshot 6 of 8
12-hour world clock Screenshot 7 of 8
12-hour world clock Screenshot 8 of 8
Screenshots by Vlad Simionescu, from the Google Play listing
Description by Vlad Simionescu Written by the developer, not by AppBrain. Click to read.
The best watch available today, right on your phone or tablet
- about 100% accurate (if you sync your device with a time server, which is very easy, see Settings / Date & time / Automatic date & time)
- shows the time anywhere on the globe
- and it looks good too.

Highlights:
- analog world clock app
- world time at a glance
- the app that turns your phone into a beautiful pocket watch
- optionally shown on the Android lock screen (recommended), see details below
- for now the app is in English only
- it has no special permissions (for instance it cannot read the hard disk), this can be checked; so it's safe for privacy

!! Important warning: Showing the clock on the lock screen (SOLS) is probably the coolest app feature. But it does increase the battery consumption. Based on a few tests I've done on my own devices, I estimate that on a normally used phone the increase is about 10%. Which is rather little; it means that for instance, if you normally charge your phone every 5 days, with SOLS active you'll have to do it every 4 1/2 days. Of course on some devices it can be more. If you find that it's too big for your taste, the app is free so you know what you have to do. (Or you can just disable SOLS; then the battery consumption will come back to normal. By default it is disabled. )
See more details about SOLS below and in the app help.

This app is mainly a shortcut to a site that provides a 12-hour world clock.
Note: The lock screen clock display (if selected) is offline, it will work also without an Internet connection.
This is an original design for a world clock, that features some 50 city names written on a normal (analog) 12-hour clock face, based on their time at any given moment. When the hour changes, the position of the towns on the clock face changes accordingly. Thus, the position on the clock face gives the time for each city. To distinguish between AM and PM time, a simple color scheme is used.
The fact that the clock face is a regular 12-hour one is novel. Up to this app there were (and still are) 24-hour world clocks in use, but obviously they're much more cumbersome.
See the app help for a detailed explanation of how it works.
The time shown by the clock is based on the system time and time zone settings.
-----------------------------------
If you enable the show on lock screen option (by default it is disabled), the app draws the world clock on the lock screen.
This is in effect a live wallpaper, though technically it isn't one, but it acts like one. That's because I found that the live wallpaper technology has limitations, it doesn't work well on many devices. I hope the way I did it it will work on most.
If you need to see the cities bigger, you can press on the LS notification (if you enabled notifications for the app). It will bring you directly to the app window (after you supply a fingerprint or password to unlock the phone). There you have the usual zoom in / orientation change options to enlarge the display.
The position (height) of the clock on the lock screen can be changed to fit your needs.
See details in the help for all these points.
-----------------------------------
This app is especially handy for seeing the world time on smartphones and tablets. As said above, it can even show it on the lock screen, and then quickly get you to the app window where you have more features.
It also provides support (hints and maps) for easily finding the time zone / representative city of any place in the world.
-----------------------------------
There are 12 clock styles, they are shown in the app entry's pictures. For most of them there's a dark face and a light face version.

Recent changes:
bug fixes
Official page on Google Play
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