Privacy

LAST UPDATED 2026-05-26

Nerva is not a medical device. Nothing in this app or on this site constitutes medical advice, diagnosis, or treatment.

The short version

Nerva does not collect personal information. There is no account system to sign up for, no email address required, and no payment information stored. Your breathing-session history stays on your iPhone.

What we don't do

We don't sell data — there is nothing to sell.
We don't run ads — never have, never will.
We don't share data with third parties.
We don't use tracking SDKs (no Facebook SDK, no Google Analytics, no Mixpanel, no Segment).
We don't request your IDFA (Apple's advertising identifier) and never show the "Allow Tracking" prompt.

What stays on your device

Sessions you complete (technique, duration, completion flag)
Your onboarding answers (intent, rhythm, experience, safety conditions)
Your settings (audio, haptics, voice preference)
Your favorites

All persistence uses Apple's SwiftData, stored on your device. Nerva does not send any of this off your phone.

Anonymous analytics data

Nerva integrates AlifAnalytics — a first-party analytics SDK built and operated by byAlif, sending anonymous usage events to our own backend at api.analytics.byalif.app. This helps us understand how the app is used and where it can be improved.

What we collect: which techniques you tap, how long sessions last, which onboarding step you reached, and which language you use the app in. Each event is keyed by an anonymous install ID generated on your device at first launch and stored in the iOS Keychain. This ID is not linked to your name, email, Apple ID, or advertising identifier (IDFA).

What we do NOT collect: your name, email, contacts, location, IDFA, or any information that identifies you personally. We never share this data with advertisers, data brokers, or any third party. There is no App Tracking Transparency prompt because we do not track you across other companies' apps or websites.

Diagnostic data (Apple-provided)

If you opt in to Apple's Share with App Developers, Apple delivers anonymized crash and performance reports to us via MetricKit. These contain no personal information. You can disable this at any time in iOS Settings → Privacy & Security → Analytics & Improvements.

Future versions

If a future version of Nerva offers optional iCloud sync, your data will be end-to-end encrypted on Apple's servers and unreadable by us. We will update this policy and notify you in-app before any such feature ships.

Contact

Email nerva@qvisa.eu for any questions about your data or this policy.