I believe that there's also an iPhone application that will use the accelerometer to figure out when you're moving the most during the time frame in which you're supposed to wake up. The increased movement implies lighter sleep, and that will trigger the alarm to wake up.
The idea with http://sleepyti.me is basically to emulate this without the need for external hardware. I'm in the same boat as you--that is, I have trouble actually falling asleep sometimes.
I originally had 'time to fall asleep' option that would allow the user to specify how long it usually took to fall asleep. Unfortunately, no one really ever used it. It's a lot easier to say "the average human takes fourteen minutes to fall asleep," than to try to calculate that in beforehand.
My advice is to give yourself a half hour or so to fall asleep. If it's been longer than that and you're still awake, get up, walk around, go back to bed in 15 minutes (and recalculate from sleepyti.me!). Research says that laying in bed longer than a half hour while awake will actually make insomnia worse. If you're sitting in bed for over a half an hour every night, you might consider talking to a doctor about sleep aids. It helps me sleep better just to know that I could take an Ambien if I need to.
The idea with http://sleepyti.me is basically to emulate this without the need for external hardware. I'm in the same boat as you--that is, I have trouble actually falling asleep sometimes.
I originally had 'time to fall asleep' option that would allow the user to specify how long it usually took to fall asleep. Unfortunately, no one really ever used it. It's a lot easier to say "the average human takes fourteen minutes to fall asleep," than to try to calculate that in beforehand.
My advice is to give yourself a half hour or so to fall asleep. If it's been longer than that and you're still awake, get up, walk around, go back to bed in 15 minutes (and recalculate from sleepyti.me!). Research says that laying in bed longer than a half hour while awake will actually make insomnia worse. If you're sitting in bed for over a half an hour every night, you might consider talking to a doctor about sleep aids. It helps me sleep better just to know that I could take an Ambien if I need to.