About this app
Sleep sound app with 12 algorithmically-generated sounds. White noise, brown noise, pink noise, fan, rain, ocean, thunder, forest, campfire, stream, heartbeat, and shush. Mix 2 sounds simultaneously. Sleep timer with gradual fade-out. Dark mode interface designed for nightstands. Background audio plays all night. Perfect for insomnia, babies, meditation, focus, and relaxation. SUBSCRIPTION INFO • Deep Sleep Pro Monthly: $3.99/month • Deep Sleep Pro Annual: $29.99/year • Payment is charged to your Apple ID account at confirmation of purchase • Subscription automatically renews unless cancelled at least 24 hours before the end of the current period • You can manage and cancel subscriptions in your Account Settings on the App Store Privacy Policy: https://probabilityapps.com/privacy.html Terms of Use: https://probabilityapps.com/terms.html
Latest release
What’s New
New look, smarter sleep timer experience, and performance improvements.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Sep 14, 2026 · 6:48 AM Free
Screenshots
