Privacy policy

Stopline calculators run in your browser. The numbers you enter are not sent to our servers. Progress, journal entries and streaks are stored in your browser storage on your device and can be cleared at any time.

Market prices in the strip at the top of each page are provided by a TradingView widget. TradingView may set cookies and receive your IP address under its own privacy policy.

Optional accounts: if you choose to sign in with Google, we store your Google account ID, your email address, and the journal, XP and streak data you sync, in a database hosted by Cloudflare. A sign-in cookie keeps you logged in for up to 30 days. We never receive your Google password. You can sign out, or delete your account and synced data, at any time from the account menu.

Ads and analytics: Stopline does not currently run ads or analytics. If that changes, this page will name each provider, the cookies they set, and how to opt out.

Contact: stoplineinvestor@outlook.com. Last updated: October 16, 2026.