Sleep Fan Pro! Publisher: Tattlebee Genre: Lifestyle Released: 7 Nov, 2018 Size: 135.9 MB Price: FREE! Click here to request a review of this app App Store Info Description Many people use sound machines to aid in sleep. This app provides different types of fan sounds as well as other ambient sounds, with adjustable volume and a built in timer. It's very easy to use and visually appealing. Screenshots Screenshot 1 of 6