Comparison

Radio Wave Sync vs TimeWave

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Radio Wave Sync

This app helps synchronize radio-controlled watches by simulating time signal waves. It supports various international time signal standards and offers a 'Beast Mode' for faster synchronization. Simply place your watch near your device's speaker and start the process.

Highlights
  • Simulates international time wave signals
  • Supports China, USA, Japan, Germany, and UK signals
  • Unique 'Beast Mode' for faster sync
  • Manual wave receiving mode calibration
  • Adjustable volume for optimal signal
Features
Read full description

I have a Casio G-Series radio watch, but it is always unable to receive radio waves from time signal station, so I started to write an application to solve this problem. After some research, I finally wrote this application, which can perfectly simulate the timing signal and happily calibrate the time. Usage method: 1. Adjust the volume of iPhone / iPad to the maximum. 2. Switch the radio controlled watch / clock to manual wave receiving mode. 3. Click the "start" button. 4. Place the watch / clock near the iPhone / iPad speakers. 5. The synchronization process generally takes 3-10 minutes, please wait patiently. Matters needing attention: 1. Please try to use the software in a quiet environment to avoid signal interference. 2. The volume of the mobile phone must be adjusted to the maximum. It's too small and the effect is not good. Characteristic: 1. Supports simulation of all types of Time Wave Signal: * China BPC * USA WWVB * Japan JJY40 / JJY60 * Germany DCF77 * British MSF 2. The unique "Beast Mode" provides higher frequency simulation signals and faster sync. Contact information: Please contact me if you have any use questions *QQ: 3364918353 *Email: 3364918353@qq.com

About

TimeWave

This app simulates radio-controlled clock signals to help your watch synchronize its time when terrestrial signals are unavailable. It offers guides for popular watch brands and checks environmental conditions before transmission.

Highlights
  • Radio-controlled clock signal simulation
  • Support for multiple international time signals
  • Environment pre-check and recommendations
  • Smart output tuning for various audio paths
  • Local time mode for overseas watches
  • Watch-specific synchronization guides
  • Live signal visualization and sync history
Features
Read full description

TimeWave is a professional time-signal simulator designed for radio-controlled watches and clocks. When your watch cannot reliably receive a terrestrial time signal, TimeWave can generate a compatible time code through your iPhone or iPad speaker, wired headphones, or supported Bluetooth audio devices. This helps your watch perform manual reception and synchronize its time wherever you are. No ads. No account required. No personal data uploaded. Core synchronization features work offline. SUPPORTED TIME SIGNALS • BPC — China • JJY40 / JJY60 — Japan • WWVB — United States • MSF — United Kingdom • DCF77 — Germany KEY FEATURES ENVIRONMENT PRE-CHECK Before transmission begins, TimeWave checks device volume, battery level, ambient noise, and magnetic-field conditions. It then provides practical recommendations to help reduce common synchronization failures. SMART OUTPUT TUNING TimeWave adjusts signal parameters for different audio output paths, including the built-in speaker, wired headphones, and supported Bluetooth audio devices, helping maintain a stable transmission. LOCAL TIME MODE Designed for imported and overseas watch models. Generate a compatible time signal using your selected local time zone, making it easier to synchronize watches that do not support your local transmitter. WATCH-SPECIFIC GUIDES Follow step-by-step guides for popular radio-controlled watches from Casio G-Shock and Multiband 6, Citizen Eco-Drive, Seiko, Junghans, Braun, and more. Guides may include: • Manual reception instructions • Antenna-position diagrams • Recommended watch placement • Reception-status indicators • Troubleshooting suggestions Actual compatibility depends on the watch model and the time-signal standard it supports. MULTIPLE PLACEMENT METHODS View clear diagrams for positioning your watch near an iPhone or iPad speaker, wired headphone cable, or supported audio device. OUTPUT PROTECTION TimeWave controls signal amplitude according to the selected output path and provides warnings when device conditions may be unsuitable for transmission. LIVE SIGNAL VISUALIZATION Watch the current time code and transmission waveform in real time, with a clear view of progress and remaining time. SYNC HISTORY Save synchronization sessions and record whether each attempt succeeded or failed. Review previous attempts to compare stations, placement methods, and device settings. PRIVATE AND OFFLINE TimeWave does not require an account and does not upload your personal data. Core time-signal generation and watch guides are available offline. HOW TO USE 1. Choose a supported time-signal station or enable Local Time Mode. 2. Put your watch into manual reception mode. On some G-Shock models, this may be shown as RC, RX, or GET. 3. Position the watch antenna close to your iPhone or iPad speaker, wired headphone cable, or supported audio device, following the in-app diagram. 4. Increase the volume and keep both the watch and device still. 5. Start transmission and wait approximately 2–10 minutes. Check the reception indicator on your watch to confirm the result. TIPS FOR BETTER RECEPTION • Keep the watch and device away from chargers, power adapters, computers, televisions, speakers, and other sources of electromagnetic interference. • Watch reception depends on the model, antenna direction, volume, output device, placement, and surrounding environment. • If your imported watch does not support your local transmitter, select a compatible signal standard and use Local Time Mode when needed. • For the best results, select your watch brand or model in TimeWave and follow the recommended placement guide. TimeWave is an independent utility and is not affiliated with, endorsed by, or sponsored by any watch manufacturer or time-signal authority. Brand and product names are used only to describe compatibility. Questions or suggestions? Contact: [fish2next@gmail.com](mailto:fish2next@gmail.com)

Screenshots

Radio Wave Sync3 screens
TimeWave3 screens

Verdict

The call

Radio Wave Sync and TimeWave both sit at 4.5 stars, but that hides the real split: 61% of Radio Wave Sync's written reviews are positive against 0% of TimeWave's. Radio Wave Sync also leads on ratings volume (1K vs 18) and iOS requirement (13.0 vs 15.0). TimeWave's advantage is ads (none vs shown) and update cadence (weekly vs every 2 months). On price, rating, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Radio Wave Sync sells 1 one-off in-app purchase and TimeWave sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for Radio Wave Sync against 4.4 for TimeWave. That said, the two scores are not equally well evidenced: Radio Wave Sync has 1K ratings behind it against 18, so its average is the more settled of the two. Written reviews are what separate them: 61% of Radio Wave Sync's written reviews are positive against 0% of TimeWave's.

UpkeepUpdate frequency

Radio Wave Sync ships an update every 2 months, TimeWave weekly. The most recent releases landed on September 29, 2026 and September 21, 2026 respectively.

Scorecard6 real differences · 4 level
Radio Wave Sync versus TimeWave: the parameters behind the verdict, then further details
ParameterRadio Wave SyncTimeWave
PriceFreeFree
Rating4.5 (1K ratings) — better4.4 (18 ratings)
Positive reviews61.4% of reviews — better0.0% of reviews
Number of ratings1K — better18
Update frequencyEvery 2 monthsWeekly — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size15 MB3 MB
Age rating4+4+
Developer宁 金毅 何

Customer experience

Radio Wave Sync

All ratings1,049 ratings
Positive87.4%
Neutral2.1%
Negative10.5%
Written reviews316 reviews
Positive61.4%
Neutral2.8%
Negative35.8%

TimeWave

All ratings18 ratings
Positive83.3%
Neutral11.1%
Negative5.6%
Written reviews2 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

Bugs and requests

Radio Wave Sync

Reported bugs

3 issues
  • No sound output
  • Sync failure after initial success
  • Incompatibility with certain watch models

Requested features

3 requests
  • Time zone offset option
  • Compatibility with newer devices
  • Improved reliability and consistency

TimeWave

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Radio Wave Sync

One-time1
  • Pro Editon$1.99
2 purchases

TimeWave

One-time2
  • Buy Me a Coffee$0.99
  • Lifetime Membership$3.99

Questions

Is Radio Wave Sync free?
Radio Wave Sync is free to download, with in-app purchases available.
Is TimeWave free?
TimeWave is free to download, with in-app purchases available.
Which has better reviews, Radio Wave Sync or TimeWave?
Radio Wave Sync is rated higher. Radio Wave Sync averages 4.5 out of 5 from 1K ratings, while TimeWave averages 4.4 from 18 ratings.
Do Radio Wave Sync or TimeWave have ads?
Radio Wave Sync shows ads; TimeWave does not.
Which is updated more often, Radio Wave Sync or TimeWave?
Radio Wave Sync ships an update every 2 months, and TimeWave weekly. Most recently, Radio Wave Sync was updated on September 29, 2026 and TimeWave on September 21, 2026.

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