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Legal

Privacy Policy

Last updated: October 2026.

Who we are

Deltalyn is a quantitative research terminal operated by Berrezueta Inc ("Deltalyn", "we", "us"). This policy explains what data we collect when you use deltalyn.com, why we collect it, and the choices you have.

What we collect

Account data: the email address you use to sign up, plus the subscription state tied to it. Payment data: handled entirely by Stripe; we never see or store your full card number. Usage data: minimal, aggregated product analytics to understand how the product is used. We do not sell personal data.

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To provide the service you subscribed to, to process payments, to send transactional emails such as receipts and account changes, and to improve the product. We do not use your data to trade on your behalf, and we never touch your brokerage.

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We rely on Stripe for payments, Supabase for authentication and data storage, and Vercel for hosting. Each processes data under its own privacy terms and only to the extent needed to run the service.

Your rights

You can access, correct, or delete your account data at any time by contacting us. Deleting your account removes your email and subscription records. Aggregated, anonymized analytics may be retained.

Contact

For privacy questions or data requests, email support@deltalyn.com.

Deltalyn is a quantitative research terminal for educational and informational purposes. We are not a registered investment adviser, and no signal, backtest, or figure on this site constitutes personalized advice to buy or sell any security. The platform does not execute orders, does not custody funds, and does not manage third-party capital. Historical or simulated ("backtest") performance does not guarantee future results; trade at your own judgment, with your own risk management, and with independent licensed financial advice if you need it.