WWVB Emulator

1.3.3

mokyuu

4.64

327 reviews

10,000+
Downloads

Free

A radio wave for electric wave clocks (WWVB) is offered.

WWVB Emulator by mokyuu brings WWVB time-signal emulation to Android, enabling clock synchronization experiments via radio signals. It includes practical guidance for antenna placement and a fast-sync mode, with 10,000+ total downloads and 390 in the last 30 days, plus a solid rating of 4.64 from 322 users.

Pros & Cons

Specialized WWVB clock synchronization experience
Practical guidance for antenna placement
Free to download and use
AdMob and Firebase integrations for a polished experience

Not guaranteed to match atomic clock accuracy as noted in the long description
Requires manual setup and proximity to hardware (antenna/speaker) to work effectively

About WWVB Emulator

WWVB Emulator is a productivity app developed by mokyuu.

How many times has WWVB Emulator been downloaded?

WWVB Emulator has been downloaded 28 thousand times. In the last 30 days, the app was downloaded 390 times.

What is the rating of WWVB Emulator?

WWVB Emulator is rated 4.64 out of 5 stars, based on 330 ratings.

Is WWVB Emulator free?

WWVB Emulator is free to download. The APK download size is 2.74 MB. The latest version available is 1.3.3. The last update was on July 4, 2025.

What are the requirements for WWVB Emulator?

WWVB Emulator requires Android 2.3+ or higher. The app has a content rating of Everyone. The app has been available on Google Play December 2018.

Description

Attention: There are a lot of people this application requests, so it's made. But there is no environment that a maker tests. Operation guaranteed won't be done.

More data about WWVB Emulator

Price	Free to download
Total downloads	28 thousand
Recent downloads	390
Rating	4.64 based on 330 ratings
Ranking	Not ranked
Version	1.3.3
APK size	2.74 MB
Number of libraries	4
Designed for Android	2.3+
Suitable for	Everyone
Ads	Contains ads

App Performance Report

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Alternative downloads for the WWVB Emulator app

WWVB Emulator compared with similar apps

Common keywords of similar apps

Wwvb Clocks Receive Place Internal Antenna High Starts Distort Radio Wave Application Atomic Clock Time Volume Sync

Keywords missing from this app

Alarm Wake App Ntp Free Music Set Mode Alarms Screen Watch Font Station Control Day Sleep Servers Turn Color Bedr Radios Display Simple World Recent Pro Pocketbell Phone Accuracy Version Stations Snooze Synctime Widget Features Settings Favorite Gentle Device Function Reliable Sound

Google Play Rating history and histogram

270

Downloads over time

WWVB Emulator has been downloaded 28 thousand times. Over the past 30 days, it averaged 13 downloads per day.

Changelog of WWVB Emulator

Show changelog

Developer information for mokyuu

mokyuu

mokyu9@outlook.com

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Comments on WWVB Emulator for Android

★★★★★ Chris Lau · Nov 8, 2021

This app really works. The DST changed this weekend and one of my casio's didn't sync properly, so it was one hour off. I couldn't manually sync it during the day, so I found this app and was skeptical whether it would work, but it does. The first time I tried it, I had the smartphone speaker set to max volume, and it didn't work. So I tried again with 75% volume and it worked. I had to position the speaker so that it was firing directly into the center of the watch face. Then, as a test, I tried to manually sync with the WWVB tower about 15 minutes later and much to my amazement it synced as well. So I wasn't sure whether the watch picked up the app signal or the tower signal. I tried again the next day but this time I did the manual sync to the tower first. It failed. Then I tried with the app using the same settings and position of speaker and it worked. So as a final test, I tried to manually sync with the WWVB tower again, and it failed. So now I'm confident to say that this app works. Thank you.

★★★★★ Dave Primavera · Mar 27, 2025

Worked perfectly! Saved me the annoyance of having to look at an unset clock after changing the batteries and waiting for it to sync. Great work!

★★★★★ Tobias Hilton · Jun 7, 2024

Great APP for CASIO watches works great for those of us out of signal range

★☆☆☆☆ michael · Oct 16, 2021

Ineffective. Watch is now approximately 8 months behind. Instructions for 2 to 3 minutes. Tried for 20 minutes. Not as awful and loud as the last app I've tried. But still just as useless.

★★☆☆☆ Kirk Kohnen · Mar 2, 2022

Doesn't sync to actual time, syncs watch to the phone's time. If the time on the phone is off, the watch will be too.

★★☆☆☆ Glenn Brockett · Dec 11, 2025

Didn't work with my phone (Samsung A52) and my Citizen watch or "Sky Scan" clock.

★★☆☆☆ Paul Richardson · Sep 24, 2021

App works but seems to be about 2 seconds slow when compared to other atomic sources (watch synced via Bluetooth, watch synced via multiband 6, time.is website). I'd rather just manually set it.

Google Play Rankings for WWVB Emulator

This app is not ranked

Technologies used by WWVB Emulator

WWVB Emulator is requesting 9 permissions and is using 4 libraries.
Show details

Trust & Safety: App requests network access, foreground service, wake lock, Ad ID, and Google services (AdMob, Firebase). No location or sensitive data permissions are listed. The long description indicates an experimental emulator with guidance and disclaimer about accuracy, suggesting standard safety practices for an app of this type.

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