Travelear provides streaming binural audio soundscapes recorded by world class audio engineers all over the world. Each recording transports you to a specific time and place in history.
https://apps.apple.com/us/app/travelear-listen-to-the-world/id1159408401
https://apps.apple.com/us/app/dreamear-sleep-relax-focus/id1473473909
This app was in development from 2016 to 2019 and while development is not active, I have made this repo public for educational purposes. Some build files have been removed for security.