Privacy
The less we hold, the less can go wrong
Last updated: July 2026. This covers the Onda website and waitlist — in plain language, because that’s the point.
Your waitlist email
When you join the waitlist, your email address is stored with Resend, the service we use to send email. It’s used for exactly one thing: telling you when Onda launches. It’s never sold, shared, or added to any other list. Want off the list? Reply to any email we send and we’ll delete it.
Analytics
We use PostHog, hosted in the EU, in cookieless mode — no cookies, no cross-site tracking, nothing stored on your device. Events are anonymous page views and button clicks; your email address is never included in them.
What we don’t do
No advertising SDKs, no data brokers, no selling or sharing anything with third parties for marketing. This page describes everything this site collects — there is nothing else.
The app, when it launches
Onda is built around one date — your last period start — and the phase math happens on your phone. No symptom diary, no data trail. If anything ever needs to leave your device, we’ll ask first, on its own consent screen, not buried in terms of service.