Privacy Policy

Dates, measurements, units, sex-specific reference selection, and other calculator inputs are processed in your browser to produce a result. Calculator components do not call an external calculation API. The site does not create a user account, child profile, health-record database, or long-term measurement history.

Child Growth Lab does not actively send calculator inputs or results to Google, advertisers, analytics services, email services, or other third parties. Inputs are not embedded in URL queries, advertising parameters, or audience identifiers. Calculator inputs, results, and child measurements will not be passed as ad-targeting parameters.

The calculator code does not persist calculator inputs in localStorage or sessionStorage. Values may exist temporarily in browser memory while the page is open. Page source, browser extensions, device software, screenshots a user creates, and other aspects of the user-controlled environment are not fully controlled by Child Growth Lab.

Vercel provides website hosting and content delivery. Cloudflare provides DNS, security, and request processing. Ordinary requests to load a page or asset may let these providers process an IP address, requested URL, user agent, date and time, request duration or status, basic device or browser information, and network or security events.

Infrastructure logs are not child measurement records. Provider processing, retention, and security depend on the relevant configuration, contracts, policies, and applicable requirements. Child Growth Lab does not promise a single fixed retention period for logs it does not fully control, and does not claim that infrastructure never records visits.

Email information is created only when someone voluntarily sends a message to support@childgrowthlab.com. It may include the sender address, message headers and time, body, attachments, and technical or reproduction details the sender chooses to provide. It may be used to answer a question, reproduce an error, verify a source, address accessibility or privacy concerns, and maintain reasonable security and correction records.

The support address is not a secure medical portal. Do not email a child's name, full real birth date, home address, school, medical-record or identity number, photograph, video, laboratory or imaging material, or a complete diagnosis, medication, or growth record. Send only the minimum information needed to explain the issue.

Email passes through mail and network infrastructure and is not promised to have end-to-end encryption. See Contact for the preferred problem-reporting details and the limits of support.

Child Growth Lab does not currently set advertising cookies or analytics cookies through its own site code. It does not use localStorage or sessionStorage to save calculator inputs. Vercel, Cloudflare, or other necessary infrastructure may use security, routing, load-management, caching, or delivery mechanisms.

This policy does not claim that the entire network path can never involve a cookie, cache, browser storage, or security token. Users can manage cookies and site data through browser settings, although blocking a necessary security or delivery mechanism may affect site operation. No cookie banner is added by this audit because no advertising or analytics script is being activated.

Advertising is not currently enabled. No AdSense ad script or ad slot is loaded. No Google Analytics or third-party audience analytics is loaded. No CMP or advertising consent signal is active.

The google-adsense-account metadata associates the site with a publisher account. The ads.txt record identifies an authorized digital-advertising seller relationship. These records support account association, verification, and sales authorization; neither one loads an advertisement, creates an ad request, sets an advertising cookie, creates a user profile, or sends calculator inputs to Google.

This section is conditional. It does not mean advertising is enabled now. If Google advertising is enabled later, a browser may automatically provide Google and enabled ad technology providers with the current page URL, IP address, browser or device information, ad-request information, cookie or similar local-storage identifiers, ad impressions or interactions, and information used for delivery, frequency control, measurement, security, and fraud prevention.

Google states that third-party vendors, including Google, may use cookies to serve ads. Where personalized advertising is permitted, advertising cookies may reflect prior visits to this or other websites. Users can manage ad personalization through Google Ads Settings / My Ad Center. Any other enabled advertising provider would have to be identified in this policy or the applicable consent flow.

Child Growth Lab's future implementation must not send calculator inputs, results, child measurements, or health records to Google; include health inputs in ad-request parameters; or create audiences from child health inputs. Personalized advertising must not be based on health information, including actual or inferred health information, or activity by users known to be under 13. Child-health pages would default to non-personalized ads or limited ads, and contextual advertising must not use measurements or results entered by a user.

For applicable personalized advertising in the EEA, the UK, and Switzerland, the site must use a Google-certified consent management platform integrated with the IAB Transparency and Consent Framework version then supported by Google. Required disclosures and consent for cookies, local storage, and personalized-ad data processing must be in place before ads load. Google CMP certification does not certify complete compliance with the GDPR or other applicable law. Traffic without a valid consent basis must receive an applicable non-personalized or limited-ads treatment.

Before any advertising script is loaded, the implementation must complete policy, CMP, consent, age-treatment, and technical acceptance. Enabling ads would require code changes, a new effective date, updated privacy validation and tests, Preview review, and Production acceptance.

• Google AdSense — Required privacy content
• Google consent requirements for the EEA, UK, and Switzerland
• Google AdSense — Set up and manage a CMP
• Google Publisher Policies — Personalized advertising
• Google Publisher Policies
• How Google uses information from partner sites and apps
• Google Privacy Policy

Child Growth Lab is written for parents, caregivers, healthcare professionals, and other adults. It is not designed as an interactive service directed to children. The site does not require a child to create an account or provide a name or contact information, and it does not create child health records or advertising profiles.

Health information is not used for personalized advertising, and known activity of users under 13 must not be used for personalized advertising. Users should not send identifiable child health information by email. A website discussing children's health does not thereby have permission to collect children's personal information.

If a future page or traffic context requires child-directed or age-treatment controls, those controls must be configured through the relevant Google tools and applicable requirements before advertising is enabled. This policy does not claim COPPA, GDPR, CCPA, HIPAA, or other legal certification.

Child Growth Lab uses data minimization and reasonable technical controls to reduce risk. Browser-local calculations reduce the need to send health inputs to a server. Having no accounts or child-record database reduces long-term storage risk, and infrastructure providers supply delivery and security capabilities.

No website, network, browser, device, or email system can guarantee absolute security. Email is not a channel for transmitting medical records. Users should avoid sending sensitive or identifying information and should keep their own browser and device secure.

Send a privacy question to support@childgrowthlab.com using only the minimum information necessary. A sender may ask about access to, correction of, or deletion of information they voluntarily emailed and that Child Growth Lab can reasonably identify and control. The site cannot provide calculator inputs it never received, and may not be able to identify or control anonymous, security, or provider-held logs. Applicable rights and handling may differ by location and circumstances.

A material change must update this policy, its effective date, the privacy validator, and tests before release. Material changes include enabling advertising, analytics, or a CMP; adding cookies, browser storage, a provider, or a database; beginning to receive or store calculator inputs; or changing support-email handling or retention.

Related information: Contact, About, Terms of Use, and Medical Disclaimer.