Sleep (and nap!) tracking precision in Pebble is still waaaay ahead of Apple Watch.
Apple Watch is packed with sensors that Pebble never had, but it can't reliably detect when I'm sleeping. It even woke me up once with a go-to-bed reminder! (only once because I turned that off immediately).
Apple's tracking naively uses my configured "Downtime" start time as a reference for when I'm "in bed". That's not a measurement, that's made up data!
Apple Watch is packed with sensors that Pebble never had, but it can't reliably detect when I'm sleeping. It even woke me up once with a go-to-bed reminder! (only once because I turned that off immediately).
Apple's tracking naively uses my configured "Downtime" start time as a reference for when I'm "in bed". That's not a measurement, that's made up data!