Last updated: 3 November 2026. This policy covers consumer health data under Washington's My Health My Data Act and similar US state laws. It sits alongside our privacy policy and our privacy summary.
What we collect
- Quiz answers, such as the changes you've noticed and your age range. They stay in your browser unless you choose to save them.
- Daily check-ins in the app: sleep, mood, energy, hot flashes, bleeding and any notes you add.
- Background you choose to share, such as whether you take HRT, and the path you pick.
- AI guide conversations, only if you switch on saving them.
- Your quiz profile and program path, which we work out from your own answers.
Why we collect it
Only to run the program for you: to show your own trends, choose your lessons, build your visit pack and, if you use it, answer AI guide questions. Never for advertising.
Where it comes from
From you, in the quiz and the app. Nowhere else.
Who it's shared with
Only the companies that run the service for us, under contract: Supabase (our database, in the EU), Vercel (hosting, in the EU) and, if you use the AI guide, Anthropic (to answer your questions). Our email provider gets your email address and first name, never health data. We never sell consumer health data, and we never share it with advertisers, social networks, Shopify or Omnisend.
Your consent
We collect each kind of health data only after you agree to it, separately, in the app. You can withdraw any consent at any time in Settings.
Your rights
- Confirm whether we hold your health data, and see it.
- Get a list of the companies we've shared it with.
- Delete it. We erase it within 30 days.
- Withdraw your consent.
Use the Privacy center in the app, or email hello@halfwayhill.com. We reply within 45 days. If we turn down a request, reply with "Appeal" in the subject line and we'll answer within 45 days. If you're still unhappy, you can contact your state attorney general.
Location
We don't use geofences or collect your precise location.