JJYEmulator

Contains ads
4.7
914 reviews
100K+
Downloads
Content rating
Everyone
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About this app

Note
We will receive more emails requesting radio clocks from other countries, but since you can not create it without materials, please attach the clear material you need.

It outlines the steps to transmit the time sync audio beeps with headphones to the watch, which after a few minutes, results with the watch being synced as if the watch owner was actually in Japan.

This application synchronizes with the time of your smartphone. To synchronize the time accurately, it is recommended to use a time synchronization application etc. to make the time of your smartphone accurate.

Place headphone speakers by the atomic radio clock’s internal
antenna, with the volume as high as possible before it starts to
distort. Or, place the clock’s internal radio antenna as close as
possible to the smartphone speaker. Again, with the volume as
high as possible before it starts to distort. When time sync
receive mode is active, the clock will sync within 2 to 3
minutes.
Updated on
Dec 5, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Device or other IDs
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

4.7
866 reviews
David Conde
August 11, 2023
Ads are not intrusive. This app works very well for the purpose for which it was intended... synchronizing JDM radio controlled watches that are not within range of the Japanese atomic clock radio transmitters. Easy to use and in my case I synchronize in less than 3 minutes. Two things: the app synchronizes the time on your watch to the time on your smartphone. And as a result of how the app works you could still be a second or so off from "true time".
1 person found this review helpful
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Hal
August 4, 2021
This app does what it says perfectly! I want to advise the developer to unify his other time sync apps into one for the benefit of all. Luckily for me, I'm in the JST Time zone most of the time so this works perfectly as is for me. I was going to complain that time was off by 1 second, but it turns out my phone's clock was not perfectly synced to JJY.
6 people found this review helpful
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Jon Manilenio
September 1, 2020
There is no atomic signal in my country (Philippines), so I've always wondered how to sync my watch (Citizen AT8124) to atomic time. Finally, this is the app that made it happen! Set my phone location to Tokyo, then set my watch timezone to Tokyo, then ran this app at 40 kHz with the earphones tied around my watch I manually turned on the sync and voila! Thank you so very much, this app is the real deal! Just not sure if this uses the phone's time or NTP time. Junghans mega app uses NTP time, jfyi.
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What's new

Changed target SDK version