Health and sleep notice
Please read this before using sleep tracking or the sleep tips. The Terms of Use (Section 9) control.
Not a medical device
Sunbell is a general wellness app. It does not diagnose, treat, monitor, or prevent any disease or sleep disorder, such as sleep apnea or insomnia.
Sleep information is an estimate
Times, scores, and sleep stages (light, deep, and REM) are estimated from your phone's movement and, if you turn on the microphone, sound. A phone cannot measure sleep the way a sleep lab or doctor does, so these numbers can be wrong. Do not use them to make medical decisions.
Breathing and relaxation tips
These are general wellness tips. Stop if you feel dizzy, short of breath, or unwell, and breathe normally. If you are pregnant or have a heart, lung, or other medical condition, ask a doctor first.
When to see a professional
If you snore loudly, stop breathing or gasp during sleep, feel very sleepy during the day, or have trouble sleeping for weeks, talk to a doctor. In an emergency, call 911.