JJYEmulator

1.6.7

mokyuu

4.74

1,051 reviews

100,000+
Downloads

Free

The application to which the time of the electric wave clock is adjusted.

JJYEmulator is a TOOLS app that enables audio-based time synchronization between your smartphone and an external clock. It guides users to place headphone speakers near the clock’s internal antenna and can complete the sync within 2 to 3 minutes, using the phone’s time as the reference. Not ranked in any top list, the app holds a strong rating of 4.73 from 1,029 reviews and 100,000+ total downloads, with 6.2K in the last 30 days.

Pros & Cons

Niche, audio-based time synchronization using the phone as the reference clock
Free to use with standard ad/analytics libraries (AdMob, Firebase) enabled
Mature app age (4188 days) suggesting stability and long-term support
Clear setup guidance for positioning around the clock’s antenna and using volume effectively

Relies on an audio-based sync method rather than automatic network time synchronization
Requires manual steps and hardware placement (headphones near the clock) for proper operation
Lacks modern features common in competitors (e.g., digital displays, smartwatch compatibility, widgets)

About JJYEmulator

JJYEmulator is a tools app developed by mokyuu.

How many times has JJYEmulator been downloaded?

JJYEmulator has been downloaded 280 thousand times. In the last 30 days, the app was downloaded 6.2 thousand times.

What is the rating of JJYEmulator?

JJYEmulator is rated 4.74 out of 5 stars, based on 1.1 thousand ratings.

Is JJYEmulator free?

JJYEmulator is free to download. The APK download size is 2.74 MB. The latest version available is 1.6.7. The last update was on August 7, 2026.

What are the requirements for JJYEmulator?

JJYEmulator requires Android 2.3+ or higher. The app has a content rating of Everyone. The app has been available on Google Play December 2014.

Description

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.

More data about JJYEmulator

Price	Free to download
Total downloads	280 thousand
Recent downloads	6.2 thousand
Rating	4.74 based on 1.1 thousand ratings
Ranking	Not ranked
Version	1.6.7
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 JJYEmulator app

JJYEmulator compared with similar apps

Common keywords of similar apps

Application Receive Minutes Place Internal Antenna Volume High Starts Distort Time Radio Sync Watch Smartphone Clock

Keywords missing from this app

App Smartwatch Display Smart Screen Analog Digital Devices Experience Bt Phone Device Wear Alarm Os Notification Features Atomic Designed Live Home Stay Bluetooth Wallpaper World Accurate Watches Users Light Designs Synctime Select Set Recent Accuracy Widget Battery Notificator Ntp Information Timekeeping Style Choose Ensuring

Google Play Rating history and histogram

Rating history

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930

Downloads over time

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JJYEmulator has been downloaded 280 thousand times. Over the past 30 days, it averaged 210 downloads per day.

Changelog of JJYEmulator

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Developer information for mokyuu

mokyuu

mokyu9@outlook.com

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Comments on JJYEmulator for Android

★★★★★ John Spence · Jul 26, 2025

I bought a Citizen PMD56 radio-controlled watch that was a Japan Domestic Product. I live in the US and obviously can't receive the Japan atomic clock transmissions. The watch arrived set to Tokyo time, 13 hours ahead. This app was totally trouble free and perfectly easy. The only problem I had was figuring out how to set the watch in reception mode. Once I did, I left my phone and the watch sitting together and the time, day and date reset to correspond with the settings on my phone. Thank you!

★★★★★ O K · Jul 18, 2026

Nice app. I was able to sync jdm watches in Europe

★★★★★ Big E · Jan 14, 2019

Works on a Casio 5052 WVA-470 Wave Captor. Used the app on the 60Khz setting with the watch set on AT (40/60 Khz).

★☆☆☆☆ Ramy Ebeid · Sep 9, 2022

Keeps getting Japan time not local, signal is great and watch gets it really clear but not local time

★☆☆☆☆ B. Bluebriz · Nov 28, 2022

Doesn't work on my Casio watch inside Japan.

★☆☆☆☆ trayan dimitrov · Apr 13, 2025

, radio waves and sound waves are fundamentally different. Radio waves are electromagnetic waves, which can travel through a vacuum, while sound waves are mechanical waves that require a medium like air to travel. Radio waves are too quiet for humans to hear, requiring special devices like radios to convert them into audible sound, whereas we can directly hear sound waves

Google Play Rankings for JJYEmulator

This app is not ranked

Technologies used by JJYEmulator

9 permissions · 4 libraries

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Trust & Safety: Permissions include network state, Internet, wake lock, foreground service, and advertising IDs (com.google.android.gms.permission.AD_ID), along with AdMob/Firebase-related capabilities. This pattern is typical for ad-supported tools and does not indicate access to sensitive user data beyond standard app advertising and background operation.

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