# WatchWave - Radio Signal Sync — Sync Time Signal Anywhere.

> Simulates global radio time signals for watch and clock calibration. (iPhone/iPad app by 瑜骏 朱.)

- Source: https://appshunter.io/ios/app/watchwave-radio-signal-sync/id1504218030 (this page in markdown: same URL + `.md`)
- Developer: [瑜骏 朱](https://appshunter.io/developer/1504214687)
- Category: Utilities, Lifestyle
- Price: $0.99
- Rating: 4.80/5 from 57 App Store ratings · 79 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.2 · 21 MB
- Languages: American English, Chinese (Simplified, China), Japanese
- Released: 2020-04-06
- Data updated: 2026-09-08
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/watchwave-radio-signal-sync/id1504218030/reviews.md

## What is WatchWave?

WatchWave can perfectly simulate the signals of 6 radio stations around the world. No matter where you are, you can receive radio signals to calibrate your radio watch and clock.

The first WaveTurbo, Radio watch not be restricted by the signal area! Even a 2-Band radio watch can use the WaveTurbo to sync radio signals anywhere.

We use Swift programming language to make sounds through the speakers, and it is incredible to realise the perfect simulation of radio signals. We call this simulation technology "WATCHWAVE SIMULATION TECHNOLOGY".
We have well-designed the interface of the App, which simplifies the operation process and makes it convenient to use.


Features:
- Perfect Multi-Band 6 simulation
With the simulation technology of our research, we achieved the radio wave signals of WWVB(United States), MSF(Europe), DCF77 (Europe), BPC (China), JJY40 (Japan), JJY60 (Japan).

- WaveTurbo
Radio watch not be restricted by the signal area! Even a 2-Band radio watch can use the WaveTurbo to sync radio signals anywhere.

- Support all kinds of radio watches and clocks
Multi-Band 2, 3, 4, 5, 6 radio watch or clock can be calibrated.

- Tutorial guide
We have built a quick tutorial for you to get started quickly. We also provide multiple case tutorials and online video tutorials.

- No ads
We consider advertising to be annoying, so we haven't added any ads to our well-designed interface.

- Support iPhone and iPad
Based on the iPhone, we redesigned the software interface for the iPad.


If you have any questions during use, please contact us through the feedback in the App.
Or send an email to: astronstudioapp@gmail.com

## Key features

- Multi-Band 6 radio signal simulation
- WaveTurbo for global signal access
- Supports all radio watch bands
- Built-in tutorial guide
- Ad-free experience
- iPad optimized interface

## Recent user reviews (10 of 79)

All indexed reviews: https://appshunter.io/ios/app/watchwave-radio-signal-sync/id1504218030/reviews.md

### 3/5 — 音が出ません

*2026-07-28*

iOS26.6にアップデートしてから音が出なくなりました。
改善お願いいたします。

### 5/5 — 40で行ける

*2026-07-28*

古い電波時計は40の方で合います

### 5/5 — Works with a loudspeaker

*2026-06-16*

Sync succeeded with an iPhone 6s built-in
speaker. Kudos.

A speaker with higher output is recommended for faster syncs.

### 5/5 — WOW IT WORKS!

*2026-05-08, version 1.1.1*

I recently purchased a citizen radio watch but haven’t managed to get a radio signal in 3 weeks. I live in the north east in a very dense metro so I was trying to plan an opportunity in the mountains to get it some signal. Then i found about about this app on Reddit and it really works! The first couple of times it didn’t cast a strong enough signal from my phone but I set my watch infront of my iPad and it got the signal. Brilliant!

### 4/5 — 使えてます

*2026-05-03*

オートでJJY60が設定されてるのですが変更は出来ないのでしょうか？可能であれば対応お願い致します。

### 1/5 — Doesn’t work

*2026-03-17, version 1.1.1*

This app does NOT work with iPhone + Casio 5610. Waste of my time.

### 5/5 — Ottima

*2026-03-14, version 1.1.1*

Funziona subito con segnale forte

### 5/5 — カシオ腕時計

*2026-03-12*

合わせられた！ありがとう！

### 5/5 — とても便利

*2026-02-26*

有名メーカー時計ならほとんど時間合わせ出来ると思います。SEIKO、CITIZEN、CASIO 等

### 5/5 — 消音モード解除忘れずに

*2026-02-11*

いや、びっくり。何で？って思うほどばっちり！Amazonで20,000円ほどの電波発信機買おうか悩んでたら見つけて使用。先見つけられて助かった！

## Frequently asked questions about WatchWave

### What does WatchWave do?

WatchWave simulates radio signals from six different global stations. This allows you to calibrate your radio-controlled watches and clocks, ensuring they are perfectly synchronized with atomic time, regardless of your location.

### How does WatchWave calibrate my watch?

The app uses its proprietary 'WATCHWAVE SIMULATION TECHNOLOGY' to generate sound waves that mimic the signals broadcast by radio stations like WWVB, MSF, DCF77, BPC, and JJY. You hold your device near your watch or clock, and it receives these simulated signals to adjust its time.

### Is WatchWave free to use?

Yes, WatchWave is completely free to use. The app does not contain any advertisements and offers all its features without any cost to the user.

### What types of watches and clocks are supported?

The app supports a wide range of radio-controlled devices, including Multi-Band 2, 3, 4, 5, and 6 radio watches or clocks. The WaveTurbo feature even allows for synchronization with 2-Band watches that might otherwise be restricted by signal areas.

### Can I use WatchWave if I'm not in a region with radio signal coverage?

Absolutely. The core functionality of WatchWave, particularly the WaveTurbo feature, is designed to overcome geographical signal limitations. It simulates the radio signals, allowing you to calibrate your devices anywhere in the world.

## Version history (last 5 releases)

### 1.1.2 — 2026-08-10

We’ve made several improvements and bug fixes:
1. Code optimization for improved runtime performance
2. Bug fix: WatchWave audio malfunction on latest iOS
3. Bug fix: inaccessible tutorial URLs

### 1.1.1 — 2020-06-22

- Added "WaveTurbo". Even a 2-Band radio watch can use the WaveTurbo to sync time signals anywhere.
- Improve App stability
- Improve interface icon display

### 1.1.0 — 2020-05-29

- Added "WaveTurbo". Even a 2-Band radio watch can use the WaveTurbo to sync time signals anywhere.
- Improve App stability
- Improve interface icon display

### 1.0.2 — 2020-04-21

- Fixed JJY sometimes has deviations
- Fixed MSF not syncing with DST

### 1.0.1 — 2020-04-16

- Further improved the Usage guide
- Added volume status prompt

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## Related topics

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-08.*