If you're looking for an app to help you fall asleep faster and sleep more soundly, Pzizz is a great option. It uses psychoacoustic processing to generate personalized dreamscapes, blending music, voiceovers and sound effects. It has features like customizable alarm songs, sleep history tracking and offline use, so it's a good all-purpose tool for better sleep.
Another contender is Endel, which offers personalized soundscapes based on real-time data like heart rate and location. It's designed to help you with lots of activities, but its Sleep mode is geared to help you sleep better. Endel is available as mobile apps, smartwatches and TVs, so it's got a good chance of being on whatever device you're using for relaxation and sleep.
If you're interested in AI-powered meditation, Snoozy offers personalized meditation sessions to help you fall asleep faster and sleep more soundly. It generates relaxing soundscapes and guided meditations to help you reach your goals, drawing from a library of sounds and quotes. It's free to download and can help you sleep better starting the very first night.