Be sure the Bose app is up-to-date.
If the Bose app is not the latest version, it might be missing features or improvements. On your device, go to the app store, search for the app and select it. If an update is available, install it.
Check which version of Sleepbuds you have.
The original Noise-Masking Sleepbuds have 21 available noise-masking sounds; the Sleepbuds II have over 50 avaialble sounds. To determine which version of Sleepbuds you have, enter your serial number at Bose.com/support
. For more info, see Serial number location