Our intention is only to charge you after you have gotten enough time to use the app. There are currently two options to use Sonic Sleep: 1) Use all the features in Sonic Sleep for free for 1-week. Some features go away after the week expires. 2) Try the subscription where you get 1 week free again. If you cancel before this next week you will not be charged.
When you select an alarm there is a slider to adjust the sound. Additionally, you can connect your device to a bluetooth speaker and be sure to select “Speaker” not “Headset.” When connected to a bluetooth speaker the sound cocoon can get very loud, to your liking.
The deep sleep stimulation plays 2 hours after the alarm is set and is designed to not be consciously heard. The proper functionality is for you to not be consciously aware that the sound is playing. The scientific literature has shown that the sound has benefits only when it is played in NREM sleep, not during conscious life.