Why a wrist can't measure your top speed indoors
Every competitor shows a km/h number. A wrist can't measure it honestly. What actually happens inside a rink — and what we'd rather show you.
Open any competitor's app and you'll find speed. Top speed, average speed, distance skated — the numbers that make a game feel measurable. Here's the problem: inside a hockey rink, a wrist-mounted device cannot measure any of them honestly.
What happens inside a rink
GPS needs to see satellites. A rink is a metal box with a roof. By the time a signal reaches your wrist it's bounced, filtered, and degraded — your "top speed" reading is chasing noise, not your skates.
Without GPS, a watch can only estimate motion from wrist accelerometers and gyroscopes. That's genuine data, but speed is derived, not measured. Derive it on a stride that isn't the wrist's own arc and you're building a confidence interval around a guess — an interval the user never gets to see.
The confident number problem
A single number — "34.2 km/h" — carries the look of precision. The real value is 34.2 km/h plus-or-minus a lot, depending on your stride, your tape, and the lighting of the building. That's not a metric you can defend. It's a metric you can market.
What we'd rather show you
We don't ship speed or distance. When we add movement data, it will be honest about what it measures — a relative pace trend ("faster than your season average") instead of a fake km/h.
It's a trade we're comfortable making: fewer numbers that are real, instead of more numbers that are marketing.