Question: Is there a sleep app that learns and adapts to my preferences over time to improve my sleep quality?

If you want an app that learns your preferences over time to get you better sleep, CalmAlma is worth a look. The app uses machine learning to generate personalized audio episodes, including stories, meditations and documentaries, based on your needs. It offers a range of subscription plans, including the Ultra Plan that gets you access to all guides and early access to new content.

Another good option is Pzizz, which uses psychoacoustic processing to build your own dreamscapes. Features like personalized sleep experiences, offline use and customizable alarm songs can help you fall asleep and stay asleep. It's good for people who struggle to fall asleep or stay asleep through the night.

If you want something more all-purpose, check out Endel. The app generates adaptive soundscapes based on real-time data like your heart rate and location. With modes for Relax, Focus, Sleep and Activity, Endel can help you concentrate, cut your stress levels and get better sleep. It works on lots of devices, so it's pretty flexible.

Last, Snoozy offers AI-generated meditation sessions based on your goals and preferences. Features like personalized soundscape options and guided meditations based on self-help books can help you sleep better and cut anxiety from the get-go. It's free to download, so it's a good option if you want to try something to improve your sleep and mental health.