Effective July 22, 2026
Privacy, in plain language
GreekFlow does not use advertising pixels, analytics trackers, marketing cookies, accounts, or contact forms.
Information processed when you use the site
Like nearly every web server, our infrastructure can temporarily process basic request information needed to deliver and protect the service: IP address, timestamp, requested path, response status, browser user-agent, and referring page. This operational data may appear in server or proxy logs. We use it only for reliability, security, abuse prevention, and troubleshooting.
Ticker searches
The symbol in a search becomes part of a request to our server. We send that symbol to our market-data provider to retrieve quotes and listed options, then cache the resulting market data for a limited period to improve reliability and reduce repeated upstream requests. The cache is organized by ticker, not by visitor.
What stays on your device
Your color-theme preference and recent symbols may be stored in your browser’s local storage. That data is not transmitted to us unless you later request one of those symbols. You can remove it through your browser’s site-data controls.
Third parties
Market-data requests are made server-side using Yahoo Finance data through the yfinance software library. The browser-facing site does not load Google Analytics, Google Fonts, advertising networks, or third-party JavaScript. If this changes, this notice should be updated before deployment.
Retention and disclosure
Operational log retention depends on server configuration and host-level security needs. We do not sell personal information. We may disclose limited operational records when required by law or when reasonably necessary to investigate abuse or protect the service.
Your choices
You may use browser privacy controls, block local storage, or clear this site’s stored data at any time. GreekFlow has no user account to delete. Questions about this notice can be raised through the project’s published contact channel when one is made available.