Privacy Policy

SeeItFlow never requires an account or payment to read lessons. If you choose to sign in with Google, Google tells us your Google account identifier, name, email address and profile picture, and we store them to operate your account. We never receive or store your Google password. If you do not sign in, we do not collect these.

Information collected automatically

• Usage data: Pages visited, modules and lessons viewed, learning-player and simulator interactions, and the search terms you enter in the site's search box, collected via Google Analytics (GA4).
• Device and browser data: Browser type, operating system, screen resolution, language, referring URL and approximate location (country, region or city), as reported by GA4. GA4 does not log or store individual IP addresses; it uses the IP address of a request only to derive approximate location.
• Hosting and delivery data: SeeItFlow is delivered through Cloudflare. To serve, cache and protect the site, Cloudflare processes technical request data such as your IP address, the requested URL, browser and device information, and request headers, under Cloudflare's own privacy policy.
• Advertising data: This site loads Google's AdSense script. Google and its advertising partners may collect data via cookies or similar technologies — such as your IP address, approximate location, browser and device type, and pages viewed — to serve and measure ads. See Section 6 (Advertising) below.

Account and learning data (signed-in users only)

• Learning progress: the lessons you mark complete, the lessons you save for later, and your most recently visited lessons (the latest 10, recorded after a short reading time) are stored against your account so they sync across your devices. Anonymous visitors cannot record progress, and nothing about their learning is saved.
• Sessions: signing in creates a session that lasts up to 30 days; we store only a hashed form of the session token, not the token itself.
• Importing earlier browser progress: before accounts existed, completed lessons were saved only in your browser. After you sign in we ask whether to import them (Import now, Remind me later or Don't import). They are sent to us only if you import, and the browser copy is removed once the import succeeds.

Information stored on your device

• Session cookie: see Section 5.
• Browser storage (localStorage): a non-secret flag recording that this browser has signed in before (so the page can show your account quickly), any earlier-version progress awaiting import, and your import choice (remind later or don't import). None of these grants access to your account.
• Session storage: short-lived markers, cleared when you close the tab, that prevent repeated automatic reloads after a site update and repeated lesson-visit updates. They are not used to identify you.

If you contact us by email, we retain that correspondence to respond to your enquiry.

We use the data described above to:

• Understand aggregate usage — which content is most viewed and where visitors encounter friction.
• Maintain and improve the reliability and performance of the site.
• Respond to support requests and enquiries sent to us directly.
• Where advertising is enabled, display and measure ads — including personalized ads, subject to your consent choices where required by law (see Section 6).

We do not sell your personal data, and we do not use it to train AI or machine-learning models. Our advertising partners' use of data is governed by their own privacy policies, linked in Section 6.

Account data (profile, sessions, progress, saved lessons and recent lessons) is stored in a Cloudflare D1 database and accessed only through our API on Cloudflare Workers. Sign-in sessions use an essential cookie that is HttpOnly (not readable by page scripts) and, on the live site, Secure; session tokens are stored only as hashes. Visitors who do not sign in have no account data stored. Usage, device and advertising-related data described in Section 1 is collected and processed directly by Google (Analytics and advertising) and, for delivery of the site, by Cloudflare, under their own security practices.

No system is perfectly secure, so we cannot guarantee absolute security. Signed-in progress is available on any device where you sign in. You can delete it at any time (Section 7).

We share information only in the following limited circumstances:

• Google Analytics: Usage and device data is processed by Google under Google's own Privacy Policy.
• Google Sign-In: If you open the sign-in dialog, your browser loads Google's sign-in script and button from Google, which processes that request and your sign-in under Google's own Privacy Policy. We receive only the account details listed in Section 1.
• Cloudflare: Our hosting and content-delivery provider processes technical request data as described in Section 1, and hosts our API and the database that stores account data, under Cloudflare's own privacy policy.
• Google AdSense / Google Ads: Google and its advertising partners may collect and use data to serve and personalize ads and measure their performance, as described in Section 6.
• Legal requirements: We may disclose information if required by law, court order, or to protect the rights and safety of SeeItFlow and its users.

We do not sell your personal data under any circumstances.

SeeItFlow sets one cookie of its own, and only if you sign in: an essential, HttpOnly session cookie that keeps you signed in for up to 30 days and is removed when you sign out. It is not used for analytics or advertising. Google Analytics and Google's advertising technology (AdSense) may set first- and third-party cookies to distinguish sessions, measure usage and serve relevant ads, subject to the consent choices described in Section 6.

Our own browser storage is limited to the items listed in Section 1 (a sign-in flag, earlier-version progress awaiting import, your import choice and short-lived session-storage markers). You can block or delete cookies and site data at any time through your browser settings without losing access to any lesson; if you do, you will be signed out, but your saved progress stays in your account. See Section 6 for advertising-specific cookie controls.

SeeItFlow may display advertisements served by Google AdSense and other third-party advertising networks to support the free operation of the site. Google's AdSense script is loaded on every page; whether and where ads appear depends on how our AdSense account is configured at any given time.

Third-party vendors, including Google, use cookies to serve ads based on a user's prior visits to this website or other websites. Google's use of advertising cookies enables it and its partners to serve ads to you based on your visit to this site and/or other sites on the internet.

These advertising partners may collect information such as your IP address, cookie identifiers, browser and device type, and the pages you view, in order to serve ads relevant to your interests and to measure ad performance. This site does not control the cookies or data-collection practices of third-party ad networks — those are governed by each provider's own privacy policy. Google's practices are described in its How Google uses information from sites that use its services page.

Your choices

• Opt out of personalized advertising from Google by visiting Google Ads Settings.
• Opt out of personalized advertising from other participating third-party vendors by visiting optout.aboutads.info (or, youronlinechoices.eu if you are in the EEA/UK).
• Block or delete advertising cookies at any time through your browser's privacy settings.

For visitors in the European Economic Area, the United Kingdom and Switzerland, analytics and advertising storage (including ad personalization and the sharing of user data for ads) is set to "denied" by default, so Google's tags do not set analytics or advertising cookies until a choice is recorded. Choices are collected through Google's consent management platform (Google Funding Choices, a Google-certified CMP), which is configured with Google Consent Mode for both advertising and analytics purposes. The message may ask for consent and offers legitimate-interest controls for advertising partners, and Google may display it automatically across the site. The 'Privacy settings' link in the footer of the home page reopens that message; it has no effect if your browser blocks Google's consent script. While consent is denied, Google's tags may still send limited, cookieless signals to Google. Outside those regions, Google's standard behaviour applies and you can use the opt-out options above and your browser settings.

SeeItFlow is not directed at children under 13, and we do not knowingly serve personalized advertising to children.

Depending on where you live, you may have rights over your personal data under laws such as the EU and UK GDPR, India's Digital Personal Data Protection Act, 2023, and California privacy law (CCPA/CPRA). Depending on the law that applies to you, these can include the right to:

• Access the personal data held about you.
• Ask for inaccurate data to be corrected.
• Ask for your personal data to be deleted — signed-in users can do this themselves under Account & Privacy (My Learning → Account & Privacy), immediately and permanently. Deletion removes the data we hold in your account; data held by Google or Cloudflare is governed by their policies.
• Opt out of personalized advertising, and of the sale or sharing of personal information. SeeItFlow does not sell personal data.
• Withdraw consent you have previously given, at any time, without affecting processing that took place before you withdrew it.

SeeItFlow holds personal data only for users who choose to sign in; most usage, device and advertising data is collected and held by Google or Cloudflare, not by us. To control that data, use the opt-out tools in Section 6, the 'Privacy settings' link in the home-page footer, or your browser's tracking-protection and cookie settings. To exercise any other right, or to ask a question, email hello@seeitflow.com and describe your request.

You also have the right to complain to a data-protection authority in your country or region if you believe your personal data has been handled unlawfully.

• Analytics data: retained in Google Analytics for 14 months.
• Account and learning data: kept until you delete your account. There is no automatic expiry of an inactive account.
• Account deletion: under My Learning → Account & Privacy → Delete account, you can permanently delete your account at any time. This immediately removes your profile (Google identifier, name, email address and picture), completed lessons, saved lessons, Continue Learning history, any legacy activity counts described below and every sign-in session on every device. It cannot be undone. Not removed: any legacy anonymous daily totals described below, data held by Google Analytics (kept for the period above) and Google or Cloudflare's own records, and any email correspondence you sent us.
• Sign-in sessions: each session expires 30 days after sign-in (it does not extend with use) or when you sign out; expired sessions are deleted by a daily cleanup. Session expiry does not delete your account or progress.
• Legacy activity counts: we no longer collect first-party activity counts for signed-in users, and no report or tool uses them. Daily counts collected earlier (sign-ins, lessons viewed or completed, bookmarks and similar events) may still be stored against your account until you delete it; they are not deleted automatically.
• Legacy anonymous daily totals: aggregate counts calculated before first-party analytics was removed contain no user identifiers, are no longer updated, and are not recalculated when an account is deleted.
• Email correspondence: kept only as long as needed to respond to you.

Google and Cloudflare may process data outside your country, including outside the EEA, the UK and India, under their own policies and safeguards. See their privacy policies for details.

SeeItFlow is intended for users aged 13 and older. We do not knowingly collect personal data from children under 13, and the site requires no account to read lessons, and signing in is not intended for children under 13. This site is not directed at children, and we do not knowingly serve personalized ads to children.

We may update this Privacy Policy from time to time — including to reflect changes in our advertising or analytics partners. We will notify you of significant changes by updating the "Last updated" date at the top of this page. Continued use of the Service after changes are posted constitutes acceptance of the revised policy.

For privacy-related questions, requests, or concerns: