Privacy Policy

We collect:

• Account data: your email address (via our authentication provider).
• Content you create: watchlists, portfolio entries, price alerts and notification settings.
• Payment data: handled directly by Stripe. We do not store your card details; we keep a Stripe customer identifier and your subscription status.
• Technical data: server logs, IP address and basic usage needed to operate and secure the Service.
• Notification identifiers you choose to provide (for example a Discord webhook URL or Telegram chat id), used only to deliver the alerts you request.

Market data displayed on the Service (skin prices, listings) comes from third parties such as Skinport and is not your personal data.

• To provide the Service and your account — performance of a contract.
• To process subscriptions and payments — performance of a contract.
• To send the alerts and notifications you enable — your consent.
• To secure, maintain and improve the Service — our legitimate interest.
• To comply with legal and accounting obligations — legal obligation.

We share data only with providers that process it on our behalf:

• Supabase — authentication, database and hosting.
• Stripe — payment processing and subscription management.
• Vercel — application hosting and delivery.
• Discord / Telegram — only if you opt in to receive notifications there.

Some providers may process data outside the European Union. Where this occurs, transfers are covered by appropriate safeguards such as the European Commission Standard Contractual Clauses.

We use strictly necessary cookies to keep you signed in and to operate the Service. We do not use advertising cookies.

We keep your account data for as long as your account is active. Billing records are kept for the period required by law. You may delete your account at any time by contacting us, after which we erase or anonymise your data except where retention is legally required.

Under the GDPR you have the right to access, rectify, erase, restrict and port your data, and to object to certain processing. To exercise these rights, contact support@cschart.com. You also have the right to lodge a complaint with the French data protection authority (CNIL, www.cnil.fr).

We may update this Policy; the date above reflects the latest version. For any privacy question, contact support@cschart.com.