8 小时 Rain 
Sleep Island
Free iOS sleep tracker with snore recording, sleep sounds, and no wearable required.
See it in action
Sounds to Help You Sleep
Rain, white noise, nature sounds… preview right here
🌙
Sleep tracking + auto-stop
No wearable — leave your phone on the nightstand and it tracks your night. Once it detects you’ve actually fallen asleep, the sound stops on its own, instead of a fixed timer cutting out while you’re still awake.
Learn about sleep tracking🦗
Tinnitus Relief
Cricket sounds and natural sounds help relieve tinnitus through sound masking therapy. Natural white noise with frequencies close to your tinnitus works best — recommended by Mayo Clinic.
Learn more about tinnitus relief →Frequently Asked Questions
Is Sleep Island free?
Core features are completely free: sleep tracking, snore recording, white noise, tinnitus relief. No 7-day trial, no forced subscription.
Do I need a smartwatch?
No. Sleep Island detects body movement through your phone's sensors. Just place your phone on the nightstand.
Does white noise really help?
Multiple studies confirm white noise shortens time to fall asleep and reduces nighttime awakenings. Natural sounds are more comfortable than mechanical noise.