Privacy Policy

Last updated October 31, 2026

The short version

No ads, no selling your data, and we collect only what Cellwise needs to work.

What we collect

Without an account, learning progress, streaks and settings stay in your browser and are not sent to us.

If you create an account, we store your email address, your learning progress and basic settings so they sync across devices.

When you buy Plus or Lifetime, Stripe processes the payment and collects your email and payment details. We receive your email and purchase status from Stripe so we can unlock and restore your access. We never see your full card number.

Our host (Netlify) keeps standard server logs such as IP address and browser type for security and reliability. If we add analytics, we will use a privacy-friendly tool that does not use cookies to track you across sites.

How we use it

To provide Cellwise, unlock paid features, send sign-in links you request, respond to support emails and keep the service secure. We do not sell or rent personal information and we do not show advertising.

Service providers

Stripe (payments), Supabase (accounts and saved progress), Netlify (hosting) and Resend (sending emails). Each processes data only to provide its service to us.

Your choices

You can clear your local progress anytime by clearing site data in your browser or using Reset in Settings. To get a copy of your data or delete your account, email us and we will do it within 30 days. Some payment records must be kept for tax and accounting law.

Children

Cellwise is not directed at children under 13 and we do not knowingly collect personal information from them.

Questions? Email support@cellwise.app.