Clockwork vs Watch Tracker

Measure the accuracy of your watches today! Clockwork includes several useful features. You can store watch information, measure watch accuracy, and set your watch using a clock synchronized with atomic time. Check it out now! _MEASUREMENTS USING IMAGES_ Most other watch measurement apps require either third-party equipment or that you press a button at a specific time. Additional equipment is often expensive, and timing a button press is difficult to do precisely. Clockwork solves this by letting you take a picture of your watch and indicate the time shown in the image. We then synchronize the image capture time with atomic time before comparing it with the time shown on the watch to calculate an offset. Taking measurements over time provides a real-world view of your watch's accuracy. _GRAPHS_ Watch your measurements over time on a beautifully crafted graph. The graph shows how your watch's accuracy changes over time and offers several modes to help you understand its performance. _WHY MEASURE?_ Knowing the accuracy of your watch is interesting on its own, but it also has several practical uses. It can indicate when it is time for a service, and documented accuracy could increase resale value, especially for vintage watches. _STORE DETAILED INFORMATION_ In case of theft or accidents, it will always help to have your information stored in a secure place. _ATOMIC CLOCK, DARK MODE AND MUCH MORE!_ Clockwork includes an atomic clock in both digital and analog formats to help you set your watch as precisely as possible. Powerful settings such as Dark or Light mode, separate day and date formats, and different ways to sort your watches let you customize the app to your liking. // Appfred AS © 2026

Measure how your watches really run - day by day. Watch Tracker helps you record accuracy, spot trends, and catch issues like magnetism, all with a clean workflow made for collectors and tinkerers. Build your collection - Add each watch with a friendly guided form (help tips included). - Edit or remove any time—by default you can track one watch; unlock unlimited with a one-time in-app purchase. Record accuracy in seconds per day (SPD) - Start a measurement and tap when your watch matches the reference time. - We color-code the result (fast/slow) and calculate seconds per day, the standard way enthusiasts and chronometer tests express rate. View history charts and long-term trends to see how your regulation or service impacted performance. wristlog.com Smart reference time - The app fetches an atomic-time-disciplined reference (with a clear progress spinner). If the network is unavailable, it gracefully falls back to device time so you never lose a session. Capture real-world context - Add an optional note and watch position (dial up, dial down, crown up/down/right)—the same orientations used in chronometer testing—so you can compare positional variance. Time Sync utility - See the current time adjusted by the atomic offset and re-sync whenever you like—useful for setting your collection precisely. Magnetism Check - Use your phone’s built-in magnetometer to watch the surrounding field (in μT). Set a baseline; values turn red when the field spikes beyond a safe threshold. Magnetized hairsprings often stick coils together, making a watch run fast—or even stop—so catching spikes early matters. Exports for your records - Share a crisp Accuracy Card (PDF/PNG) summarizing current rate and trend chart. - Export a CSV of all measurements for your personal logs or watchmaker. Why it helps - Clarity: SPD + charts make performance easy to understand and compare. - Context: Positions and comments reveal what really changes rate. - Confidence: Atomic-time reference reduces guesswork when setting or regulating. - Care: Magnetism is common in modern life (speakers, bags, gadgets); quick checks help you avoid surprises between services. Thoughtful by design - No account required. - Works offline after first sync (network only needed for reference time). - Fast, friendly, and built for everyday use. Whether you’re tracking a new diver, tuning a cherished vintage piece, or keeping a whole box on-spec, Watch Tracker gives you the tools to measure, understand, and enjoy your watches more.