Radio Wave Sync vs Timegrapher
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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
Timegrapher
This application uses your device's microphone to measure the accuracy of mechanical watches. It detects ticking sounds to analyze beat rate, beat error, and amplitude, displaying results in real-time and over time.
- Detect BPH
- Measure Beat rate
- Measure Beat error
- Measure Amplitude
- Set Lift angle
- Real-time sound display
- Accuracy over time display
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What is Timegrapher? Timegrapher measures the accuracy of your mechanical watch. The app uses your device's microphone to detect the ticking of your watch. Features: Detect BPH Measure Beat rate Measure Beat error Measure Amplitude Set Lift angle Display beat noises real time (unlock, impulse and lock sounds) Display accuracy and beat error over time More features will be coming soon.
Screenshots
Verdict
The clearest difference is rating: Radio Wave Sync at 4.5 against Timegrapher's 2.8. Radio Wave Sync also leads on update cadence (every 2 months vs every 8 months) and ratings volume (1.1K vs 46). Timegrapher's advantage is ads (none vs shown). On price, review sentiment, in-app purchases and monetization model 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
Both are free to download. Radio Wave Sync sells 1 one-off in-app purchase and Timegrapher sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Radio Wave Sync holds the better App Store score, 4.5 against 2.8. That said, the two scores are not equally well evidenced: Radio Wave Sync has 1.1K ratings behind it against 46, so its average is the more settled of the two. Written reviews point the same way: 61% of Radio Wave Sync's written reviews are positive against 55% of Timegrapher's.
Radio Wave Sync ships an update every 2 months, Timegrapher every 8 months. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.
| Parameter | Radio Wave Sync | Timegrapher |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (1.1K ratings) — better | 2.8 (46 ratings) |
| Positive reviews | 61.5% of reviews — better | 55.0% of reviews |
| Number of ratings | 1.1K — better | 46 |
| Update frequency | Every 2 months — better | Every 8 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 15 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | 宁 金 | Attila Lelko |
Customer experience
Radio Wave Sync
Timegrapher
User reviews
Radio Wave Sync
From 1.1K App Store ratingsWhat we love
- 🚀 Works as intended
- 👍 Easy to use
- 💡 Innovative solution
- 🔒 Reliable sync
- ⏱️ Fast sync time
Room to improve
- 🐛 Inconsistent performance
- 💰 Paid version required
- 🔇 Audio issues
- 🤖 Ads in paid version
- 🔁 One-time use only
Timegrapher
From 46 App Store ratingsWhat we love
- 👍 Works great for some
- 🎯 Accurate for some users
- 💰 Good value for money (paid features)
- 💡 Useful for watch regulation
- 🎧 Works better with external mic
Room to improve
- 😞 Doesn't work for many
- 💸 Requires payment for full functionality
- ❓ Scam accusations
- 📱 Inconsistent readings
- 🚫 No readings at all
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
Timegrapher
Reported bugs
9 issues- Does not detect ticking
- Does not work at all
- Requires payment to function
- Inaccurate readings
- Unskippable pop-ups
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- App magnetizes watch
- Does not work after paying for premium
- Amplitude reported as 360
- Inconsistent measurements
Requested features
5 requests- Add dark mode
- Keep screen on during use
- Ability to save data per watch
- Improve visual design
- Lower price for Pro version
In-app purchases
Radio Wave Sync
- Pro Editon$1.99
Timegrapher
- Unlock full$5.99
Questions
Is Radio Wave Sync free?
Is Timegrapher free?
Which has better reviews, Radio Wave Sync or Timegrapher?
Do Radio Wave Sync or Timegrapher have ads?
Which is updated more often, Radio Wave Sync or Timegrapher?
Other comparisons
