Fetal Weight Percentile Calculator Privacy Policy

This Privacy Policy explains how we, the operator of the Fetal Weight Percentile Calculator (the "Service"), handle information in connection with the Service, a web-based fetal weight percentile calculator.

This Privacy Policy applies to the Service and the features described in this document.

1. English Version Controls

This English Privacy Policy is the controlling privacy policy for the Service. Localized legal notices may be provided for convenience and to highlight important points in other languages. Those localized notices are summaries only and are not complete translations of this Privacy Policy.

If a localized notice conflicts with this English Privacy Policy, this English Privacy Policy will control to the maximum extent permitted by applicable law. Nothing in this Privacy Policy limits privacy rights, consent requirements, data subject rights, or other protections that cannot be waived under applicable law.

2. Summary

The Service is designed to minimize health data handling on the server.

• Calculator inputs such as gestational age, estimated fetal weight, and optional fetal sex reference are processed in the browser.
• The Service does not intentionally transmit, collect, store, log, analyze, or otherwise process calculator inputs or percentile results on our server.
• The Service does not intentionally send raw calculator inputs or results to hosting, analytics, advertising, event logging, or other server-side systems.
• Technical request information, hosting/CDN logs, browser language, country header, and functional metadata may be processed to operate, secure, and improve the Service.
• If you save, copy, or share a result, your browser, device, clipboard, share sheet, or selected third-party app may process that result.

3. Health-Related Calculator Values

The values you enter into the calculator may relate to pregnancy or health. The Service is designed so that those health-related calculator values are used only inside your browser to calculate and display the result.

We do not intentionally transmit, collect, store, log, analyze, sell, or disclose health-related calculator values on our server. This includes:

• gestational age;
• estimated fetal weight;
• fetal sex reference selection;
• selected reference data source;
• raw percentile;
• displayed percentile;
• percentile bucket;
• chart point or result image contents.

The Service is designed not to include health-related calculator values in URLs, query strings, request bodies, server logs, analytics events, advertising events, or Cloudflare Workers/Pages server-side processing.

Your browser may keep the values temporarily in page memory while the calculator is open. If you save, download, copy, screenshot, or share a result, the saved or shared result may be processed by your browser, device, operating system, clipboard, download folder, or the third-party app or service you choose.

4. Information You Enter Into the Calculator

The Service may ask you to enter:

• gestational age in weeks and days;
• estimated fetal weight in grams;
• optional fetal sex reference selection;
• optional reference data selection.

These values may relate to pregnancy or health. The Service is designed to process these values in your browser to generate the displayed percentile and chart result. We do not intentionally transmit, collect, store, log, analyze, or otherwise process these calculator inputs or results on our server.

You should avoid entering information that is not needed for the calculator. The Service does not require your name, email address, hospital name, chart number, memo, ultrasound image, photo, or account information.

5. Information Automatically Processed

When you access the Service, we or our service providers may process technical information such as:

• IP address;
• browser type, device type, operating system, and user agent;
• language settings and browser locale;
• approximate country or region from hosting/CDN request headers;
• referrer URL or referral category;
• pages or endpoints requested;
• request time, response status, and diagnostic logs;
• security, fraud prevention, and abuse prevention signals.

This technical information is used to deliver the Service, select language or reference defaults, maintain security, troubleshoot issues, understand service performance, and comply with legal obligations.

6. Functional Events and Analytics

The Service may use functional events or analytics to understand whether features work. Event payloads should be limited to non-sensitive metadata such as:

• event name;
• screen or surface name;
• viewport group;
• reference set identifier;
• button or feature used;
• ad slot identifier or reserved size, if advertising slots are enabled;
• timestamp;
• anonymous or rotating session identifier, if enabled.

The Service is designed not to include the following in analytics or advertising event payloads:

• gestational age;
• estimated fetal weight;
• raw percentile;
• displayed percentile;
• percentile bucket;
• fetal sex;
• nickname;
• memo;
• photo name;
• raw search query containing health inputs;
• result image contents.

7. Cookies, Local Storage, and Similar Technologies

The Service does not require an account or server-side health record storage.

The Service may use essential technologies needed to operate the website, remember interface preferences, protect the service, or measure basic performance. If we introduce non-essential cookies, advertising cookies, retargeting, or third-party tracking that requires consent under applicable law, we will update this Privacy Policy and provide any required notice or consent mechanism.

8. Result Saving and Sharing

The Service may allow you to save a result image, download a file, copy share text, or open your browser or operating system share sheet.

When you use these features, the result may include information such as gestational age, estimated fetal weight, displayed percentile, reference name, chart position, or source metadata. Your browser, device, clipboard, download folder, messaging app, social app, cloud storage app, or other selected third-party service may process that information.

You decide whether to save or share the result and with whom. We do not control the privacy or security practices of third-party apps or services you choose.

9. Third-Party Service Providers

We may use third-party service providers for:

• website hosting and content delivery;
• domain, network, and security services;
• web fonts;
• analytics or functional event processing;
• advertising configuration or delivery, if enabled;
• error logging and performance monitoring;
• legal, compliance, and business operations.

Third-party providers may process information only as needed to provide their services to us or as otherwise described in their own terms and privacy policies.

The Service uses Cloudflare, Inc. and its affiliates and subprocessors for hosting, content delivery, edge security, request routing, DDoS protection, and Cloudflare Workers/Pages operation.

The technical and operational data processed through Cloudflare may include IP address, user agent, request metadata, browser language or region headers, security events, and network logs.

Health-related calculator values, including gestational age, estimated fetal weight, fetal sex reference selection, selected reference data source, percentile results, and chart or result image contents, are not intended to be transmitted to Cloudflare Workers, Cloudflare Pages, Cloudflare logs, Cloudflare analytics, or Cloudflare subprocessors.

Cloudflare's current subprocessors are listed at https://www.cloudflare.com/gdpr/subprocessors/.

The Service currently references Google Fonts in the web layout. Browser requests to font providers may reveal technical request information to those providers.

10. Purposes of Processing

We process information for the following purposes:

• provide and operate the Service;
• calculate and display results in the browser;
• select appropriate language or reference defaults;
• display reference data and source metadata;
• provide save or share features;
• maintain security and prevent abuse;
• debug errors and improve reliability;
• understand feature usage without collecting raw health inputs;
• comply with legal obligations;
• respond to inquiries.

11. Legal Bases Where Applicable

Depending on applicable law, our legal bases may include:

• providing the Service at your request;
• our legitimate interests in operating, securing, and improving the Service;
• compliance with legal obligations;
• your consent, where required by law for non-essential cookies, certain analytics, advertising, sensitive information handling, or international transfers.

Where consent is required, you may have the right to withdraw consent as provided by applicable law.

12. EEA and UK Users

This section applies where the EU GDPR, UK GDPR, or similar European data protection law applies to the processing of your personal data.

For health-related calculator values, the Service is designed to perform calculation only in your browser. We do not intentionally transmit, collect, store, log, analyze, or otherwise process those values on our server. Because those values are not intentionally collected by us, we may not be able to access, correct, delete, export, or otherwise act on them after you close the page unless you provide them to us separately.

For technical and operational personal data, the operator of the Service is the controller. Our legal bases may include performance of the service you request, legitimate interests in operating and securing the Service, compliance with legal obligations, and consent where consent is required.

If we process personal data of EEA or UK users through Cloudflare, Inc., its affiliates or subprocessors, Cloudflare Workers, Cloudflare Pages, or other service providers outside the EEA or UK, we will rely on an applicable transfer mechanism, such as an adequacy decision, the EU Standard Contractual Clauses, the UK International Data Transfer Addendum or UK International Data Transfer Agreement, the EU-US Data Privacy Framework where applicable, or another lawful transfer mechanism.

Where applicable, you may have the right to request access, correction, deletion, restriction, portability, objection to processing, withdrawal of consent, and to lodge a complaint with a competent supervisory authority. These rights may be limited where we cannot identify you or where the Service has not intentionally collected the relevant calculator values.

13. Retention

Calculator inputs and results are not intentionally transmitted to or stored on our server.

Technical logs and functional event records, if collected, are retained only for as long as reasonably necessary for the purposes described in this Privacy Policy, unless a longer period is required or permitted by law.

Retention periods may vary depending on the type of record, operational need, security need, service provider configuration, and applicable legal requirements.

14. Disclosure

We may disclose information:

• to service providers that help operate the Service;
• to comply with applicable law, regulation, legal process, or government request;
• to protect the rights, safety, and security of users, the public, the Service, or us;
• in connection with a merger, acquisition, financing, reorganization, or sale of assets, subject to appropriate safeguards;
• with your direction or consent.

We do not sell raw calculator inputs or percentile results.

15. International Processing

The Service may be accessed from multiple countries. We and our service providers may process information in countries other than your country of residence.

If applicable law requires specific notice, consent, transfer safeguards, or contractual measures for international processing, we will provide them before or at the time required.

The Service uses Cloudflare, Inc. and its affiliates and subprocessors for hosting, content delivery, edge security, request routing, DDoS protection, and Cloudflare Workers/Pages operation.

The technical and operational data processed through Cloudflare may include IP address, user agent, request metadata, browser language or region headers, security events, and network logs.

The processing location may include Cloudflare's global edge network and countries where Cloudflare, its affiliates, or subprocessors operate. Cloudflare's current subprocessor list is available at https://www.cloudflare.com/gdpr/subprocessors/.

For EEA and UK users, international transfers may rely on applicable safeguards such as adequacy decisions, the EU Standard Contractual Clauses, the UK International Data Transfer Addendum or UK International Data Transfer Agreement, the EU-US Data Privacy Framework where applicable, or another lawful transfer mechanism.

Because the Service is designed not to transmit health-related calculator values to the server, the international processing described in this section concerns technical and operational personal data rather than the calculator values themselves.

16. Security

We use reasonable technical and organizational measures designed to protect information processed by the Service. However, no website, browser, network, device, or transmission method is completely secure.

Because result sharing through the Service depends on your device and selected third-party apps, you should share results only with people and services you trust.

17. Children and Minors

The Service is intended for adults or for use with appropriate parental or guardian involvement where required by law. The Service is not directed to children.

We do not knowingly collect personal information from children through the Service. If you believe a child has provided personal information to the Service, contact us so we can review and take appropriate action.

18. Your Rights

Depending on where you live, you may have rights to:

• request access to personal information;
• request correction or deletion;
• object to or restrict certain processing;
• withdraw consent where processing is based on consent;
• request data portability where applicable;
• lodge a complaint with a privacy authority.

Because the Service does not intentionally transmit or store calculator inputs or results on the server, we may not be able to identify or retrieve calculator-specific records unless you provide enough information for us to locate relevant technical records.

19. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. The updated version will replace the prior version when made available through the Service.

If changes are material, we will take reasonable steps to provide notice appropriate to the nature of the Service.

20. Contact

For privacy questions or requests, contact:

• the official contact channel made available for the Service.