Clock Wave 4+

Sync radio controlled watch‪.‬

Zhen REN

Designed for iPad

    • $1.99



Calibrate radio controlled watch or clock at anytime, anywhere

Clock Wave allows you calibrate radio controlled watch or clock anytime and anywhere. Just click "Transmit" button, set your watch or clock to manual receive time signal, and place it nearby your iPhone/iPad's speaker, it will be calibrated in a few minutes.

Clock Wave features:
- Covers 5 major longwave time signal stations all over the world.
* Japan: JJY
* China: BPC
* DE: DCF77
- Automatically transmit the accurate time.

* If your radio controlled watch/clock doesn't support station BPC, select station JJY manually to use in China.
* If your radio controlled watch/clock doesn't support station MSF, select station DCF77 manually to use in UK.
* If your radio controlled watch/clock support only a specified timezone or station, (e.g. Using a radio controlled clock support only JJY station in Australia.), select the watch/clock timezone manually in app settings.

What’s New

Version 1.3.15

1. Bugfix

Ratings and Reviews

4.8 out of 5
134 Ratings

134 Ratings

Nim Chimpsky ,

The REAL Deal; you won’t be disappointed

I’m an engineer, so I was a little skeptical. Today the clocks changed over from daylight savings and I had a choice: set my Citizen manually or try Clockwave. Either way I had to pull up the manual since I’ve only had my JDM watch for 6 months and l’ve only had to set it once (which was a little bit of a pain since I did it manually, and it was still on Tokyo time when I received it). Anyway, I read from another post to keep Clockwave set at JJY, rather than auto select (since my watch only receives the radio signal in Japan). For the record, I’m in EST and the app is showing UTC +09, (JST,KST). I started the app and heard a little clicking with the volume full up on my iPad. I depressed the A button on my Citizen for 2 seconds, and the second hand swept to RX; in just a few seconds it moved to the H position showing good signal strength. Five minutes later my watch was set correctly & was spot on when I compared it to Atomic Clock. Kudos to the developer.

Update: the developer has corrected the UTC offset… today I used UTC -5 (my actual time zone) to set my watch when the clocks went to back to EST.

tatman1982 ,

Absolutely Works!!!

I downloaded this very skeptical!! Already expecting it not to work! Because it makes sense right how can a phone that can only transmit sound set a clock that receives radio signals! I don’t know how this works but it truly does! However you have to hold your clocks receiver close to the speaker on your phone with the volume all the way up! Then be patient it after you start a manual receive your signal reception will show very strong then just minutes later you will have a set clock! It’s really pretty amazing!!! The key to this working is keeping the clock your setting close to you phone while your transmitting!! Otherwise it won’t work!! You can’t believe those that say it doesn’t work because it really does!!

DeweyDavis ,

Simply amazing and works

Let me preface this review by saying I have never written a review before on the App Store. I downloaded this app because the atomic time sync on my watch never captured the signal from the atomic clock in Fort Collins due to interference from walls, electronics, and modern technology that is all around us. This App made syncing my watch to the atomic clock as simple as hitting the “transmit button.” My watch synced to the clock within 2 minutes and I was done. Simply amazing and highly practical for people not close to the atomic tower anywhere in the world whether it be in the USA or Europe or Asia or anywhere else for that matter. Bravo!

App Privacy

The developer, Zhen REN, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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