This Privacy Policy explains how SmartFin (“SmartFin,” “we,” “us” or “our”) handles information when you use the SmartFin website, calculators, simulations, historical analyses, APIs, MCP tools, embeds and related services.
SmartFin does not require user accounts or logins, and we do not intentionally collect your name, email address or other direct identifiers merely because you use the calculators.
Using a website involves some technical information. Our hosting, analytics, security and infrastructure providers may process information such as IP address, browser and device information, pages visited, referrer information and approximate location, as described below.
SmartFin’s calculators and both stock-history tools (Stock Returns Over Time and Compare Two Stocks) calculate on SmartFin’s server: the numbers you enter are sent to the server when you press Calculate or open a link that carries inputs, and PDF and image downloads are made on the server from the same inputs. SmartFin’s code does not store these inputs. Because inputs can be part of the page address, our hosting providers’ request logs may record them for up to 30 days; see Server Logs and Security below.
A stock ticker is sent to our server to retrieve historical price data. In Stock Returns Over Time, a price file you choose is read in your browser, and only its dates and prices are sent to calculate the answer; nothing from the file is stored.
SmartFin uses Google Analytics as its only analytics. There are no ads, no accounts and no sale of data. See Cookies and Your Choice below for how this works where you are.
SmartFin’s calculators use the numbers and choices you enter to calculate a result.
Calculated on our server. All SmartFin calculators and both stock-history tools calculate on SmartFin’s server. When you press Calculate, or open a link that carries inputs, the numbers and choices are sent to the server, which works out the answer and sends it back; PDF and image downloads are made the same way. SmartFin’s code does not store these inputs. Because they can be part of the page address, our hosting providers’ request logs may record them for up to 30 days (see Server Logs and Security).
Price files. In Stock Returns Over Time, a price file you choose is read in your browser; only its dates and prices are sent to the server to calculate the answer, and nothing from the file is stored.
Do not enter passwords, payment-card numbers, government identification numbers, account credentials, private keys or other highly sensitive information into SmartFin. No SmartFin calculator asks for them.
When you request a stock or other market-history result, SmartFin may send the ticker or other identifier to its server so the relevant historical data can be retrieved and calculated.
The ticker request is not intentionally linked to a SmartFin user account because the core Service does not require an account. Server infrastructure may nevertheless record technical request information such as IP address, timestamp and user-agent as described in the server-log section below.
Some SmartFin tools may create URLs containing calculation parameters so that a result can be reproduced or shared.
Anyone who receives such a URL may be able to see the parameters encoded in it. Do not put sensitive personal, confidential or account information into a calculation if it could appear in a shareable URL.
SmartFin uses Google Analytics (GA4) as its only analytics. There are no ads, no user accounts, and SmartFin does not sell data.
Google signals and ad personalization are turned off for SmartFin’s site, and SmartFin’s Google Analytics is not linked to any advertising account.
Google Analytics can include pages viewed, referrer information, browser and device information, and approximate location derived from IP information. Google processes this information under its own privacy practices; see Google’s privacy information for details.
SmartFin also runs a separate page-view count that does not use cookies and does not need a choice from you.
To work out which choice to show you, SmartFin asks its own server for your approximate country, taken from a header our hosting provider adds to the request. Nothing about this check is stored.
Where you are decides the starting point.
In the European Economic Area, the United Kingdom, Switzerland, the French overseas regions (Réunion, French Guiana, Guadeloupe, Martinique, Mayotte and the French side of Saint Martin) and the Åland Islands, analytics cookies stay off until you choose Accept in the banner shown on your first visit. Reject and Accept are given equal weight. If SmartFin cannot tell your region quickly enough, or cannot tell it at all, you get this same banner.
Everywhere else, analytics cookies are on by default to count visits, and a Global Privacy Control signal from your browser is honoured as a request to turn them off.
Wherever you are, a “Privacy choices” link in the footer reopens this choice at any time. Turning analytics off removes the Google Analytics cookies already set on your browser. Your choice is remembered in your browser’s storage.
SmartFin’s servers and infrastructure automatically record technical request information such as IP address, request time and user-agent information. Because calculator inputs are part of the page address, this request information can include them.
Our hosting providers keep these request logs for up to 30 days. Logs are kept only as long as reasonably needed for security, abuse prevention, reliability, debugging and operational purposes. We process these logs on the basis of our legitimate interest in keeping the Service secure and working. The logs are not used to build behavioral profiles of individual users.
SmartFin may allow AI assistants such as ChatGPT or Claude to use selected calculators or computational tools through MCP or similar integrations.
When an AI assistant calls a SmartFin tool, the assistant may send the minimum numbers, parameters or identifiers needed to perform the requested computation. SmartFin returns the computed result and related information required by the tool.
SmartFin does not control how an external AI provider stores, processes, retains or uses information once that information is handled by the external provider. Users should review the privacy terms of the AI service they are using.
SmartFin should not be treated as a private storage system for prompts, personal financial records or confidential information.
SmartFin may use third-party providers for hosting, analytics, market data, security, content delivery, AI integrations and other infrastructure.
Those providers may process technical or feature-specific information as necessary to provide their services. Their processing may be governed by their own terms and privacy policies.
SmartFin does not sell your personal information to third parties.
SmartFin is intended for a general audience and is not designed to knowingly collect personal information from children. If you believe a child has provided personal information to SmartFin in a manner that should not have occurred, contact us so we can review the situation.
SmartFin may be accessed from countries outside the location where the Service operator or its providers are based. As a result, information processed by hosting, analytics or other providers may be transferred to or processed in other jurisdictions, subject to applicable law and the relevant provider’s practices.
Because SmartFin does not maintain user accounts for the core Service and generally does not intentionally collect direct identifiers, there may be limited personal information that SmartFin can associate with a particular person.
If you have a privacy question or believe SmartFin holds information that can be associated with you, contact contactus@smartfin.fyi. We will review the request and respond as required by applicable law.
SmartFin retains information only for as long as reasonably necessary for the purposes described in this Policy.
Under the settings SmartFin uses: hosting request logs are kept for up to 30 days; Google Analytics keeps event data for 2 months and user-level data for 14 months; and the cookieless page-view count discards its daily visitor code within 24 hours.
SmartFin uses reasonable technical and organizational measures appropriate to the Service to protect information against unauthorized access, alteration or misuse. No internet service can guarantee absolute security, and users should avoid submitting highly sensitive information to a public web application.
SmartFin may update this Privacy Policy as the Service, technology, data sources, analytics configuration, APIs, MCP integrations or legal requirements change. The “Last updated” date will indicate when the current version took effect.
For privacy questions or requests, contact contactus@smartfin.fyi.