FAQ

Is there a mobile app?

No, there isn't a native app. However, you can install WristLog as a PWA, which is very similar to a native app, on many devices, including iOS and Android phones.

How does accuracy tracking work?

First of all, WristLog cannot measure the accuracy of your watch. You need a timegrapher for that. WristLog uses your manually recorded points in time to calculate the accuracy of the watch. This means there's human error involved, but it's free, more fun, and engaging!

Each accuracy tracking starts with pressing a button when your watch precisely reaches a specific time. This is usually done when the second's hand reaches the twelve o'clock position. At that point, WristLog compares the time on your watch with real time set on your device. If this is the first record, WristLog will use it as a baseline to determine how off real time was from your watch in the beginning. If there's a previous record, WristLog will calculate how the difference between real time and your watch time has changed since the last record.

Example: You record your baseline at 8 AM. Real time is 8:00:05, so your watch is already +5 seconds off. You add another record at 8 PM, but real time is already 8:00:10 at that moment. This means your watch has lost 5 seconds since the last record. Watch accuracy is usually measured in Seconds Per Day (SPD). Time elapsed between your two logs was 12 hours or 0.5 day. So between those two records, your watch was running at -10 SPD.

You can probably spot the main issue here already. Let's exaggerate a bit and say you pressed the log button 5 seconds later than your watch actually reached the time. This means WristLog thinks your watch was showing 8 PM sharp, but in reality, it was already 8:00:05. Updating the example above, WristLog would calculate your watch was running at 0 SPD instead of -10 SPD. You have to be very precise. It takes some practice, but at least for me, it's a fun activity to do! You also don't want to record accuracy too often. A small window between records means that even the tiniest imperfection in your logging can greatly distort the result.

Why record the accuracy of my watch?

Subjectively, it's a fun little activity. You get to spend some focused time with your watch and enjoy the results as they come in. More practically, you can see potential issues with your watch's movement. Is it way off the specification? It might be time to service your watch.

How do Wristchecks work?

This part is really simple. You just log a Wristcheck if you wear a specific watch. In the long term, you can see how much wrist time your watches get. Pssst, you can even sell watches you don't wear that much!

Who are you?

Here, I'm just a watch nerd. I made WristLog for myself and decided to share it with the world. I'm also a developer, father of two kids, and I like cars.