Comparison

Watch Tracker vs Timegrapher X

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

Head to head
About

Watch Tracker

Easily track your wristwatch's accuracy against an atomic clock. This app measures and records time differences, displaying detailed graphs of your watch's performance. It's designed to be more accurate and simpler than traditional methods.

Highlights
  • Tracks wristwatch accuracy
  • Synchronizes with atomic clock
  • Measures and records time differences
  • Displays data graphs
  • Tracks multiple watches
  • Exports data to CSV
Features
Currently charting
Read full description

Watch Tracker is a revolutionary app for tracking the accuracy of a wristwatch. It's dramatically easier and more accurate than any previous method. Just tap a button when the time on your watch matches the time displayed by the app, and Watch Tracker does the rest. It synchronizes with an atomic clock, measures and records the difference, and displays graphs of all the data points you've recorded. - Uses best-fit analysis to accurately calculate how many seconds your watch gains or loses per day - Displays graphs of rates and variance - Can track multiple watches simultaneously - Saves data in CSV files that can be opened with any spreadsheet software Watch Tracker is made by the developer of tChess (the chess app that was featured in Apple's "Learn" commercial for the iPad) and Learn Chess (the Apple Staff Favorite e-book).

About

Timegrapher X

This app analyzes the ticking sound of mechanical watches to measure accuracy, beat error, and amplitude. It offers real-time waveform and detailed diagram displays, as well as long-term data logging for in-depth analysis. Pro features include PDF reports, CSV export, and extended testing durations.

Highlights
  • 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)
Features
Currently charting
Read full description

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/

Screenshots

Watch Tracker4 screens
Timegrapher X4 screens

Verdict

The call

The clearest difference is price: Watch Tracker at $4.99 against Timegrapher X's $29.99. Watch Tracker also leads on rating (4.7 vs 4.2) and in-app purchases (none vs 1). Timegrapher X's advantage is update cadence (every 2 months vs every 6 months) and iOS requirement (18.0 vs 26.0). On ads, chart position 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

Watch Tracker costs $4.99 and Timegrapher X $29.99 up front. Timegrapher X sells 1 one-off in-app purchase. Watch Tracker asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Watch Tracker holds the better App Store score, 4.7 against 4.2. That said, the two scores are not equally well evidenced: Watch Tracker has 322 ratings behind it against 23, so its average is the more settled of the two. Written reviews point the same way: 91% of Watch Tracker's written reviews are positive against 70% of Timegrapher X's.

UpkeepUpdate frequency

Watch Tracker ships an update every 6 months, Timegrapher X every 2 months. The most recent releases landed on September 23, 2026 and September 22, 2026 respectively.

Scorecard8 real differences · 3 level
Watch Tracker versus Timegrapher X: the parameters behind the verdict, then further details
ParameterWatch TrackerTimegrapher X
Price$4.99 — better$29.99
Rating4.7 (322 ratings) — better4.2 (23 ratings)
Positive reviews91.2% of reviews — better70.0% of reviews
Number of ratings322 — better23
Update frequencyEvery 6 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank#136 — better#188
DevicesiPhoneiPhone
Requires iOS26.018.0 — better
Further details — not scored
Size1 MB7 MB
Age rating4+4+
DeveloperTom KerriganONYX Apps

Customer experience

Watch Tracker

All ratings322 ratings
Positive93.2%
Neutral0.9%
Negative5.9%
Written reviews205 reviews
Positive91.2%
Neutral2.9%
Negative5.9%

Timegrapher X

All ratings23 ratings
Positive78.3%
Neutral4.3%
Negative17.4%
Written reviews30 reviews
Positive70.0%
Neutral6.7%
Negative23.3%

Bugs and requests

Watch Tracker

Reported bugs

2 issues
  • Crashes when trying to add photos
  • Inconsistent time tracking results

Requested features

4 requests
  • Add more positional variance options
  • Implement cloud sync for data
  • Add more customization options
  • Improve support for newer iOS versions

Timegrapher X

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Watch Tracker

No in-app purchases

1 purchases

Timegrapher X

One-time1
  • Timegrapher X Pro$29.99

Questions

Is Watch Tracker free?
Watch Tracker costs $4.99, with no in-app purchases.
Is Timegrapher X free?
Timegrapher X costs $29.99, and also offers in-app purchases.
Which has better reviews, Watch Tracker or Timegrapher X?
Watch Tracker is rated higher. Watch Tracker averages 4.7 out of 5 from 322 ratings, while Timegrapher X averages 4.2 from 23 ratings.
Do Watch Tracker or Timegrapher X have ads?
Neither Watch Tracker nor Timegrapher X shows ads.
Which is updated more often, Watch Tracker or Timegrapher X?
Watch Tracker ships an update every 6 months, and Timegrapher X every 2 months. Most recently, Watch Tracker was updated on September 23, 2026 and Timegrapher X on September 22, 2026.
Which is more popular, Watch Tracker or Timegrapher X?
Watch Tracker currently peaks at #136 in the App Store charts, and Timegrapher X at #188. Chart position reflects recent download velocity rather than total install base.

Other comparisons