There are lots of ambient sound apps on the App Store, but they all seem to be paywalled. I thought I should make one where all the content was free.<p>I bought a secondhand professional audio recorder, then took it to national parks in Australia and Germany, in case I heard anything interesting. It was a bit of a learning experience, but I now have a library of half a dozen passable recordings.<p>The biggest problem was noise pollution: humans are noisy and everywhere; I never noticed until I started listening carefully for background noise. Traffic and building noise carries for huge distances.<p>I wrapped all the sounds up in a swiftUI interface, built around a curved video carousel.<p>I wanted to pay special attention to vision impaired users, so it all has VoiceOver support, and extra UI elements that can be turned on for vision impaired users.<p>It's free on the App Store if you want to take a look.