Privacy Policy
Last updated: November 11, 2026
This policy explains how ChartMemory handles information when you visit our website or use the market-pattern explorer. ChartMemory is the service operator referred to as “we,” “us,” and “our” below.
Information we use
- Market selections and activity. We process your chosen symbol, timeframe, window length, and matching settings to fetch market data and calculate historical matches.
- Recent symbols. Your browser stores up to five recent symbols in local storage so you can select them again. They remain there until replaced or you clear the site’s browser data.
- Usage information. Google Analytics measures page visits and actions such as opening the explorer, searching for matches, using playback, and changing settings. Events can include the selected symbol, interval, pattern length, matching options, and number of matches.
- Technical information. Your browser sends connection information when accessing the service and Google Analytics, including an IP address and browser or device information. Our server may record request paths, request times, and response status for operation and troubleshooting.
Why we use this information
We use market selections to provide the explorer, recent symbols for convenience, and usage information to understand and improve the product. The explorer does not require an account or payment information, and does not connect to a brokerage account.
Google Analytics and cookies
We use Google Analytics through a web stream associated with our Firebase project. Google Analytics may use cookies and identifiers to measure visits and interactions. Google signals and advertising personalization are disabled in our site configuration. Our custom events do not include chart prices, historical bar series, or raw error messages.
Google processes information under its own policies. Read how Google uses information from sites using its services and the Google Privacy Policy. Depending on your location, a valid legal basis, including consent where required, applies to analytics processing.
Service providers and sharing
We use Google to provide usage analytics and market-data services to retrieve price information for the symbol you select. Hosting and technical providers may process information needed to deliver and maintain the service. We may disclose information when required by applicable law or to protect the security and lawful operation of the service. This policy does not authorize selling personal information or using it for unrelated advertising.
Storage and retention
Recent-symbol preferences and preview saved patterns are stored in your browser. A saved pattern includes its symbol, interval, selected bars and matching context, chart choice, and timestamps. The current Google sign-in flow is a mock preview: these saved entries remain on this device and are not linked to a verified Google or Firebase account or uploaded for background checks. If you choose to enable browser notifications, permission is managed by your browser; this preview does not yet run scheduled checks or send pattern alerts. You can delete saved entries from the app or clear this site’s browser storage. The server temporarily holds chart snapshots to match the exact pattern you are viewing; older snapshots are replaced as new ones are loaded. Market-data caches may be kept for operation. Analytics data is retained according to the settings of our Google Analytics property, and technical records are kept as needed for operation, security, and legal obligations. We do not promise a fixed retention period in this policy.
Your cookie choices
Optional Google Analytics is off until you accept it. Use Cookie settings in the footer to accept, reject, or customize Analytics. Your consent choice is stored in your browser for up to 180 days, after which we ask again. Withdrawing Analytics consent stops further tracking on this site, removes accessible Analytics cookies, and reloads the page; it does not delete data previously collected by Google. Essential storage for recent symbols and privacy preferences remains available.
Your choices and rights
You can clear site data to remove recent symbols, manage or block cookies through your browser, or use Google’s Analytics opt-out browser add-on. Blocking Analytics does not prevent the explorer from functioning. Clearing cookies does not delete information already collected by Google.
Depending on applicable law, you may have rights to access, correct, delete, restrict, or object to processing of personal information, withdraw consent, or complain to a relevant authority. To make a request, contact ChartMemory through the communication channel through which the service was made available to you. We may need information to identify and verify a request.
International processing and security
Our providers may process information in countries other than your own. Their applicable policies describe how they handle international processing. We take steps appropriate to the service to protect information, but no system or transmission can be guaranteed completely secure.
Children and policy changes
ChartMemory is intended for adults exploring financial markets, not children. We may update this policy as the service changes; the date above identifies the latest revision. Material changes will be communicated as required by applicable law.