Privacy Policy

Quantfoli ("we", "us", "our") is a portfolio analytics platform operated by Dariush Tahajomi, Switzerland. Contact: dariush.tahajomi@gmail.com

We collect the following data when you use Quantfoli:

• Account data: email address and password (stored securely via Supabase Auth).
• Portfolio data: ticker symbols, share quantities, purchase prices, and dates that you enter or import.
• Payment data: billing information processed by Stripe. We never store card details — Stripe handles this entirely.
• Usage data: anonymous analytics (page views, feature usage) via Vercel Analytics.

• To provide portfolio analytics, returns calculation, and risk metrics.
• To process payments and manage your subscription via Stripe.
• To improve the product based on aggregated usage patterns.
• To contact you about your account if necessary.

We do not sell your data. We do not use your portfolio data for advertising.

We use the following third-party services, each with their own privacy policies:

• Supabase — database and authentication (EU servers)
• Stripe — payment processing
• Vercel — hosting and analytics
• Yahoo Finance — market data (public endpoints, no personal data sent)

We retain your data as long as your account is active. You may request deletion of your account and all associated data at any time by emailing dariush.tahajomi@gmail.com. We will process deletion requests within 30 days.

If you are located in the EU or Switzerland, you have the right to:

• Access the personal data we hold about you
• Correct inaccurate data
• Request deletion of your data
• Object to or restrict processing
• Data portability

To exercise any of these rights, contact dariush.tahajomi@gmail.com.

All data is transmitted over HTTPS. Portfolio data is stored in a secured Supabase database with row-level security. Passwords are never stored in plaintext.

We use a single session cookie for authentication purposes. We do not use tracking or advertising cookies.

We may update this policy from time to time. We will notify users of material changes via email or an in-app notice.

Questions about this policy? Email dariush.tahajomi@gmail.com.