I have (and recommend) a white noise machine at home, but when I travel, I use the awesome MyNoise app, which lets you EQ the noise precisely so you can target the specific annoyance in your environment.
> What does AutoSleep offer above and beyond Apple’s Health app?
Apple commonly says I get more hours of sleep than I know I do. Apple counts just being relaxed as sleeping. Whereas I can tune AutoSleep to correctly identify the difference between me sleep and just being super relaxed. Thus I get a much more accurate image of what is working
Also the apple sleep graph is actually terrible. Almost impossible to understand when wake up are occurring.