Really helped me track sleep and encourage sleep. Its definitely improved my sleep habit and patterns.
Unfortunately, like all sleep apps on the iPhone, it must run in the foreground AND take control of all audio. This means there is no listening to other music or sleep inducing waves.
You need a separate device if you need to use your phone for anything else.
App Issues
Need ability to change alarm time without splitting the daily sleep record.
Need ability to look at sleep record when I wake temporarily without splitting the daily sleep record.
Need to update results on Mac and print results.
Need data not to be deleted on phone.
Need to be able to sleep for more than 12 hours when sick or expecting call at night from India .