I sleep I a lodted bed so many movements are exaggerated. Tland i sleep woth a lound fan and white noise maker, to start this off. And I don't get into bed until I'm ready ro sleep. Several times now it will say I have either 1 never fallen asleep, 2 never slept at all, and 3 took me 2 to 3 hours to fall asleep. Even for naps it doesn't properly track. Be it the microphone or the accelerometer. This app is only useful to track when instart and stop it.