Sonno - Sleep Sounds
Mix Calming Sounds to Sleep
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Most sleep apps hand you fixed soundscapes. Sonno hands you the mixer. Layer rain, oceans, gardens, and noise into the exact ambience that puts your mind at rest.
Most sleep sound apps give you fixed tracks. Sonno gives you the mixer.
Layer crashing waves with quiet rain. Add a French garden at dusk over a deep brown noise base. Drop in a desert wind, lower the crickets, raise the thunder. Sonno is built around one idea: in under a minute, you should be able to design the exact ambience that calms your mind — not someone else's idea of relaxing.
START WITH A SOUNDSCAPE
Begin from one of our hand-crafted scenes — French Garden, Ocean Calm, Desert Wind, and more — each combining looping samples with layered noise for a rich, seamless wall of sound. Or start from silence and build your own.
ADD, ADJUST, SAVE
• Layer additional samples onto any soundscape with a tap
• Adjust each sample's volume independently
• Mix multiple sounds together until the balance feels right
• Save your custom mixes and return to them any night
DESIGNED FOR SLEEP
• Seamless, non-looping playback so you don't notice the transitions
• Sleep timer with gentle fade-out so the sound doesn't jolt you awake
• Plays in the background — keep your screen off, your battery untouched
• Works with AirPlay, headphones, and your favourite Bluetooth speaker
WHY PEOPLE USE SONNO
• Falling asleep faster, especially in noisy environments
• Blocking out traffic, neighbours, or a partner's snoring
• Calming racing thoughts at bedtime
• Focus and study sessions during the day
• Relief for tinnitus and light sleepers
No subscription required to use the core mixer. No ads. No tracking. Just sound — built the way you want it.
SUBSCRIPTION
An optional subscription unlocks a sleep timer and additional premium samples.
• Monthly: $3.99 / month
• Yearly: $19.99 / year
Payment is charged to your Apple ID at confirmation of purchase. Subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel in your Apple ID Account Settings after purchase.
Privacy Policy: https://sonnoapp.com/privacy/
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, David Granzin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Location
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- David Granzin
- Size
- 47 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 26.4 or later.
- iPhone
Requires iOS 26.4 or later. - Mac
Requires macOS 26.4 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.4 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Makisuo LLC
