# Timegrapher X — Timegrapher - watch timing

> Mechanical watch timegrapher app measuring accuracy, beat error, and amplitude. (iPhone/iPad app by ONYX Apps.)

- Source: https://appshunter.io/ios/app/timegrapher-x/id1516161361 (this page in markdown: same URL + `.md`)
- Developer: [ONYX Apps](https://appshunter.io/developer/356553882)
- Category: Utilities
- Price: $29.99 with in-app purchases (on sale, was $49.99)
- Rating: 4.20/5 from 23 App Store ratings · 30 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.0 · 7 MB
- Released: 2022-09-30
- Data updated: 2026-09-05
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/timegrapher-x/id1516161361/reviews.md

## What is Timegrapher X?

Timegrapher X analyzes the ticking sound of a mechanical watch to measure its accuracy rate, beat error, and amplitude. The app is specifically optimized to work with the Apple EarPods' headset microphone. Ideally, the headset microphone and the watch crown should be slightly pressed together, as this greatly improves the level of detail and diagram quality. The better the contact, the stronger the signal.

https://timegrapher.app/


Timegrapher X consists of two separate modules (tabs):

The "INSTANT" module shows how the watch is behaving in the short term, or "right now". It is very similar to a traditional timegrapher device, with the added benefits of a real-time waveform display and a high-detail diagram display.

The "LONG TEST" module is a graphical data logger, which helps you observe the long-term behavior of a watch. Various chart indicators are available, such as average rate, moving rate history, rate drift over time, and more. Long-term measurements for up to 12 hours can be conducted for in-depth analysis of the watch being tested.

Timegrapher X Pro (in-app upgrade) provides these additional features:

 • Save and share branded, printable PDF reports for each measurement
 • Export raw measurement data as a .csv file for spreadsheet analysis
 • Conduct long-term measurements for up to 120 hours


For demo videos and documentation, please visit: https://timegrapher.app/

## Key features

- Mechanical watch sound analysis
- Measures accuracy, beat error, amplitude
- Real-time waveform display
- Detailed diagram display
- Long-term data logger
- Save and share PDF reports (Pro)
- Export data as CSV (Pro)

## Pricing and in-app purchases

Base price: $29.99.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Timegrapher X Pro | $29.99 | one-time |


## Chart rankings

- #181 in Top Paid · Utilities (US App Store)

## Recent user reviews (10 of 30)

All indexed reviews: https://appshunter.io/ios/app/timegrapher-x/id1516161361/reviews.md

### 1/5 — Not working

*2025-10-04*

Not working on iPhone 15pro. Zero stars. I tried Korg external mic and Apple headset. Mic setting in app goes back to internal; doesn’t see external mic. $30 down the drain.

**Developer response:** Please take a look at the detailed docs and videos available at https://timegrapher.app

If you have any specific questions, email us at apps@onyx3.com

### 4/5 — Honestly pretty good

*2025-09-06*

Better than I expected it to be. I used it with the headset it said to use, and I was able to get an accurate reading from my ST1901 which I knew was very off at about +13 s/d. I tried to use it with my Navitimer B01 and had a little trouble since it was so quiet and the signal was somewhat noisy, but it still did a decent job and gave me a good readout with very reasonable result. I’m pretty happy with my purchase as I don’t need incredible accuracy, but just want to be able to tell if my Navitimer should ever go in for service early. Thanks!

### 4/5 — Trop cher

*2025-07-28*

Pour une version final il faut payé le un deuxième fois 35€ dans l’application après l’avoir acheté. 
( très dommage)

### 5/5 — 最好用的校表仪

*2025-07-14*

真的，功能强大，十分精确，UI简洁，价格昂贵😄，但是物超所值！

要是能支持AirPods就更好了。

### 2/5 — Something fishy here

*2025-06-06*

Idk what these reviews are on about but this app doesn’t work very well. Can’t seem to get anything I try to regulate to be anything close to what it says. And even if I’m a sound proof studio room I couldn’t get it to get a stable accuracy. Just constant drifting. I would give it 1 star but maybe it’s just the new iPhone mics or something that’s no longer compatible (wild guess). Spend an extra hundred on a timegrapher.

**Developer response:** Hi, sorry for the issue you have experienced. Please see the demo videos and docs at https://timegrapher.app/

Please contact us with your specific setup, watch brand, movement etc, so we can assist you further: apps@onyx3.com

### 1/5 — Amplitude missing

*2025-06-04*

This app doesn’t show me the Amplitude, which is the only reason to get it really. The daily deviation in accuracy can be measured other (cheaper) ways just as good. I feel kind of scammed

**Developer response:** Please see the docs, at least the Quick Start and Levels of Detail articles - stable amplitude readout requires strong signal. With any specific issue, please contact us at apps@onyx3.com and if still not happy with the app, request a refund.

https://timegrapher.app/doc/

### 5/5 — Works great!

*2025-04-19*

App works great with the lightning dongle and 3.5mm headphones. Versus paying for a physical tool that will someday end up in a landfill, I appreciate using hardware I already own. Nice app, keep it up. 👍🏻

**Developer response:** Glad you like it!

### 3/5 — Great idea, not accurate

*2025-04-17*

I have a watch that I've tracked over many days as running around 14 seconds fast per day. This app reads +3-4 seconds for the beat rate. So it's quite inaccurate.

**Developer response:** A mechanical watch's accuracy rate is not constant. It can vary depending on build quality, watch position, mainspring tension and even temperature. Timegrapher X helps you find, observe and understand rate fluctuations that develop over time. Please take a look at the docs, specifically the “relative watch regulation” article. If you decide the app is of no use to you, request a refund. If you have a specific question, contact directly at apps@onyx3.com

### 5/5 — Perfect and dead accurate

*2025-03-04*

Would love to see some more love from the dev. It’s not cheap.

**Developer response:** Thanks for the updated review. Much appreciated! A minor update coming in January.

### 5/5 — Excellent

*2025-01-27*

Very good App that does the same as the typical hardware tools. I wanted to check and adjust my mechanical watch but didn’t want to buy an extra timegrapher hardware tool for more than 100 EUR
as it would only be occasionally used. Although the App recommends to use an Airpod as a microphone just slightly pushing the the crone of the watch to the phone’s microphone just worked for me. Reliable and even there was a hit of background noise in the room it measured very stable. 100% recommendation. Not a cheap app but well worth it.

**Developer response:** Thanks for the review and glad you like the app!  

Note on using internal mic. A very close proximity to phone’s built-in speakers may magnetize the watch under test. Try to keep a distance of at least 2-3 cm between the watch and the device.

## Frequently asked questions about Timegrapher X

### What does Timegrapher X do?

Timegrapher X analyzes the ticking sound of mechanical watches to measure their accuracy rate, beat error, and amplitude. It provides real-time waveform and detailed diagram displays, as well as long-term data logging for comprehensive analysis of watch performance.

### What are the key features of Timegrapher X?

Key features include the ability to measure accuracy, beat error, and amplitude by analyzing the watch's ticking sound. It offers both an 'INSTANT' module for short-term analysis with real-time waveform and diagram displays, and a 'LONG TEST' module for long-term graphical data logging.

### How much does Timegrapher X cost?

The app is free to download and use with basic features. Additional advanced features, such as saving and sharing branded PDF reports, exporting raw measurement data as a CSV file, and conducting longer-term measurements (up to 120 hours), are available through an in-app upgrade called Timegrapher X Pro.

### What devices is Timegrapher X compatible with?

The app is optimized to work with Apple EarPods' headset microphone. For best results, it is recommended to press the headset microphone and the watch crown slightly together to improve signal strength and diagram quality.

### What are common use cases for Timegrapher X?

Common use cases include hobbyists and professionals measuring the accuracy of their mechanical watches, diagnosing issues like beat error, and monitoring long-term performance drift. It's ideal for watch collectors, enthusiasts, and repairers seeking detailed insights into their timepieces.

## Version history (last 5 releases)

### 1.1.9 — 2026-05-14

Thanks for using Timegrapher X! Please rate the app and leave a review! 

• Minor fixes

### 1.1.5 — 2024-03-12

Thanks for using Timegrapher X! Please rate the app and leave a review! 

• Minor fixes

### 1.1.3 — 2022-12-13

Thanks for using Timegrapher X! Please rate the app and leave a review! 

• Fixed diagram trace display misalignment for 19800 and 25200 beat rates
• Increased calibration range to allow for low-grade external USB audio devices

### 1.1.1 — 2022-11-05

• Minor tweaks

### 1.1 — 2022-09-08

• Initial release

## Apps similar to Timegrapher X

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Watch Tuner Timegrapher](https://appshunter.io/ios/app/watch-tuner-timegrapher/id991367080) | 3.8 (80) | $7.99 | Utilities |
| [ChronoLog • Watch Accuracy](https://appshunter.io/ios/app/chronolog-watch-accuracy/id6452083510) | 4.6 (204) | Free | Utilities |
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| [Twelve O'clock](https://appshunter.io/ios/app/twelve-oclock/id1570977980) | 4.4 (82) | Free | Utilities |
| [Watch Tracker](https://appshunter.io/ios/app/watch-tracker/id610666926) | 4.7 (322) | $4.99 | Utilities |

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All apps by ONYX Apps: https://appshunter.io/developer/356553882

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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 2026-09-05.*