Privacy Policy
STRAND is a hair wash-day tracker. This policy describes what we collect, why, and how to delete it. It applies to the STRAND website, PWA, and iOS app.
Who we are
STRAND is built by a solo developer. Questions or deletion requests: use Feedback in the app, or email from the account you signed up with via that form.
What we collect
- Account: email, password (stored by our auth provider, not in readable form), and the name you enter.
- Hair profile: type, porosity, density, length, goals, and wash frequency.
- Routines: wash logs, products, habits, weekly goals, and optional notes.
- Photos: pictures you add to your hair journal. These stay in your private account storage and are not public.
- Device: camera (journal photos and product barcodes) and photo library (choosing an existing photo). We do not save photos back to your system library.
- Notifications: a push subscription for your device if you turn reminders on.
- Product scans: barcodes are looked up with Open Beauty Facts to fill in a product name.
Analytics
We use Mixpanel to understand whether the app is useful (screens viewed, wash days logged, habits completed). We identify analytics with your account ID and first name. We do not send your email to Mixpanel, and we do not record session replays of your screen. Vercel Analytics measures aggregate site traffic.
Who processes data
- Supabase (authentication, database, and private photo storage)
- Mixpanel (product analytics)
- Vercel (hosting the website)
- Open Beauty Facts (optional barcode lookup)
- Tally (optional feedback form you choose to open)
We do not sell your personal information. We do not use your data for third-party advertising.
Photos and sensitive information
Journal photos may show your hair, scalp, or face. Treat them as personal. They are stored privately and shown only to you when you are signed in. Hair-care notes (for example minoxidil as a habit) are stored as part of your routine log, not as a medical record.
Retention and deletion
We keep your data while your account exists. In the app, go to Profile → Delete account. That removes your login, profile, logs, photos, and analytics profile. You can also request deletion through Feedback.
Your choices
- You can use STRAND without camera, photo library, or notifications — those permissions are optional features.
- You can sign out at any time.
- If you are in a region with access or deletion rights (including GDPR/CCPA-style rights), use Delete account or Feedback and we will honor a verified request.
Children
STRAND is not directed at children under 13, and we do not knowingly collect their data.
Changes
If this policy changes in a material way, we will update the date above. Continued use after an update means you accept the revised policy.