Privacy policy.
Last updated: April 2026
Overview
Sonno is built with privacy at its core. We do not collect, store, or transmit any personal data. The app runs entirely on your device — no accounts, no cloud sync, no analytics.
Data we collect
None. Sonno does not collect any personal information. There are no user accounts, no email collection, no tracking pixels, and no third-party analytics SDKs.
Local storage
Your sound mixes, soundscape preferences, and settings are stored locally on your device using standard iOS storage mechanisms. This data never leaves your device and is deleted when you uninstall the app.
Third-party services
Sonno does not integrate any third-party analytics, advertising, or attribution SDKs. The only third-party in the loop is Apple, who handles app distribution and the one-time purchase through the App Store under their own privacy terms.
Children's privacy
We do not knowingly collect any information from children under 13. Since we collect no data at all, this applies universally to all users.
Changes to this policy
If we ever change our privacy practices, we will update this page. Since we don't collect your email, we can't notify you directly — so check back if you're curious.
Contact
Questions about this policy? Reach out at privacy@sonnoapp.com.