[rikf]

Surely the reason this isn't a thing is because the watch needs to be charged every night?

[pilif]

At least for Series 2 this isn't that much of an issue any more: despite tracking a 2 hour workout every day, the battery easily lasts through the day and the night. And it recharges fully while I'm showering on the next day.

I could easily use the watch for sleep tracking, but the SDK is a bit limited for 3rd party apps to be able to automatically start and stop tracking.

I hope Apple will either improve the SDK or add a built-in sleep tracker and alarm feature as described by OP (though in my case the point is moot as I have a very efficient fur-based alarm clock that will claw my face on the first sign of daylight in order to be fed)

[veidr]

I agree; I charge it while I'm in the shower and so does everybody I know who actually uses their Apple watch (which means, about 15% of those people I know who bought one).

The battery (in the second version of the product) now lasts long enough to make that work — except sometimes on the weekend when I might go a day without a shower.

I also want the smart sleep tracking app badly. The reason I bought this crappy watch was solely for the vibration-on-wrist when you have to make a turn when using navigation.

Unfortunately, that iOS feature is horribly broken — it automatically switches to "car mode" when you go faster than a brisk walk, which means it doesn't work for navigating on a bicycle, skateboard, foot scooter, or even just running.

So the device has very little utility for me as it stands — but a sleep-cycle-aware, vibrate-only alarm clock would make it worth the purchase price for me.

And Apple (since I know you clearly must lurk on every hacker news thread waiting for unsolicited advice from strangers on how to fix your lame products): fixing the stupid "automatically switch to car mode" misfeature would also make the watch worth its price to me.

[rimliu]

I got Withings Steel which has this functionality, does not need to be charged for ~8months and allows to set "margins of error" how much deviance from the set time is allowed (to better match your sleep phase).

[rtkwe]

Yeah. What they need is a true full day's charge and a fast charge so you can charge it in the morning while you get ready (and maybe a top off at night). Or for a lot of people you can probably do it now by taking it off when you get home and charging it until you go to bed then wearing it overnight. There's an opportunity in the morning to top off the charge again if it's not making it through the day.

A sleep mode could also make over night wear more feasible. Really you don't want any notifications coming through anyways so all the wireless connectivity can be turned off along with the screen and the processor clocked waaaay down.

[djrogers]

> What they need is a true full day's charge and a fast charge so you can charge it in the morning while you get ready (and maybe a top off at night).

That's precisely what the series 2 gives you...

[barsonme]

I think I have the newer iWatch, so I'm unsure about previous models, but I can get a full two days of use out of it. It's actually a bit of a downside for me since I always forget to recharge it :-)

[r00fus]

My series0 (2015 model) with watchOS3 gets about 1.5 - 2 days on a charge.

Some days it barely gets a day - still haven't figured out if this is due to excessive timer usage (kids!) or messages or something... but it's rare.

I've slept with it on and simply put it in the charger while I shower/dress/eat and it's full.

[ashildr]

Series 0 (original AppleWatch) here. I charge the watch while showering in the morning and while getting ready for bed. So it lasts a day, easily. And I love it tapping me awake in the morning, as does my MSO. I had the Pebble Steel before, and before that a Fitbit Armband, all with silent alarms.