We collect your email address for authentication, and any child growth data (name, date of birth, sex, weight, height measurements) you voluntarily enter. We collect this data solely to provide the growth tracking service.
Your data is stored in a self-hosted, encrypted PostgreSQL database. We do not use third-party analytics that track your behaviour. Database backups are encrypted and stored securely with Backblaze B2.
You have the right to access, correct, export, and delete your data at any time. To exercise these rights, email privacy@growchart.app or use our in-app data deletion feature. We will process your request within 30 days.
We use only a single essential session cookie for authentication. No tracking or advertising cookies are used.
We use Stripe for payment processing (subject to their privacy policy) and Resend for transactional email. No data is sold to any third party.
GrowChart is operated by adults (parents/guardians) on behalf of children. We do not knowingly collect data directly from children under 13.
For privacy inquiries: privacy@growchart.app