What's a good iOS app for creating personalized soundscapes to improve focus and sleep?

Endel: Focus & Sleep Sounds stands out as a great iOS app for creating personalized soundscapes tailored to your specific needs. It uses an AI-powered algorithm that takes into account factors like your location, time of day, weather, and heart rate (if you grant permission) to generate sound environments designed to enhance focus, reduce stress, and improve sleep. The app offers different sound modes, such as Focus, Relax, and Sleep, each with its own unique sonic characteristics. You can also customize the intensity and duration of the soundscapes to fit your preferences. Furthermore, Endel offers integration with the Health app, allowing it to adapt soundscapes to your sleep and wake times. While some users have reported minor issues with specific features like morning mode, the core functionality of generating effective soundscapes for focus and sleep is generally well-received. The app's ability to blend sound with other audio like podcasts is also a plus, though some users have requested higher volume levels.