I have had the same problem with 'ambient sound' apps, and they eventually render them useless for me. Perhaps it would be an idea to layer two tracks of differ

I have had the same problem with 'ambient sound' apps, and they eventually render them useless for me. Perhaps it would be an idea to layer two tracks of different lengths on top of each other to at least make it 'random' for longer? Have you considered this? (Other than that, great work. I might buy the iOS version soon!)