Overall, I’ve benefited from using this app. What I learned was that I was going to bed too early, which is why I was waking in the night for sometimes 1-2 hours of just lying awake, so learning that was helpful, however, despite putting in information about sleeping well with fewer and shorter wake-ups, it kept pushing my bedtime until it was past 11 pm, cutting my sleep down to less than 7 hours, when I kept telling the app I’m feeling good at just under 8 hours or about 7h30m (this is down from attempting to get 9+ a night but waking up in the night). If I go to bed before the prescribed bedtime because I’m tired and I fall asleep quickly, the app chastises me for going to bed too early as it disrupts my sleep drive, but if I’ve fallen asleep in 5 minutes or less, that shows high sleep drive and sleep hygiene will ding you for the short time it takes to fall asleep, too, so I wish it would accept that if I went to bed 15 minutes early and also fell asleep quickly, maybe that’s what I needed. You can edit the bedtime it gives you, but it chastises you for editing that, too. When I’ve gone to bed 15 minutes early and fallen asleep quickly, I would think it would edit my bedtime to earlier, not later and later and later. Despite my frustrations with some of the advice, I have recommended it to friends and patients who are having trouble sleeping as I do think I learned some things.