Privacy Policy

1. Introduction

Smile Tracker ("we", "us", or "our") operates the website thesmiletracker.com, which provides free, browser-based AI tools including a Smile Analyzer, Age Estimator, and Face Analyzer. This Privacy Policy explains what data we collect, how we use it, and your rights regarding that data.

By using this website, you agree to the practices described in this policy.

2. Information We Do NOT Collect

Your photos never leave your device. All image analysis — smile scoring, age estimation, and face analysis — runs entirely inside your browser using client-side JavaScript and on-device AI models. No photo is ever uploaded to any server, database, or third-party service.

• No account creation is required to use any tool.
• No biometric data is stored or transmitted.
• No personally identifiable information is collected from our tools.
• Photos are discarded immediately when you leave or reset a tool.

3. Information We Do Collect

We collect limited, non-personal data automatically when you visit the site:

• Usage data — page views, session duration, device type, browser, and traffic source, collected via Google Analytics (GA4) in anonymised form.
• Cookies — small text files placed on your device by our advertising and analytics providers (see Section 4 below).

We do not sell, rent, or trade this data to third parties.

4. Cookies and Advertising

Smile Tracker is supported by advertising through Google AdSense. Google AdSense may place cookies on your device and collect data to serve personalised advertisements based on your browsing activity across the web.

We also use Google Analytics (GA4) which sets cookies to collect anonymised usage data such as page views, session duration, and traffic source.

What these cookies do:

• Google may use cookies or similar technologies to serve ads based on your prior visits to this site or other sites on the internet.
• Third-party vendors, including Google, use cookies to serve ads based on your prior visits to our website.
• Analytics cookies help us understand how visitors find and use the site so we can improve it.

Data collected by Google through these cookies is governed by Google's Privacy Policy.

Your opt-out options:

• Visit Google Ads Settings to opt out of personalised advertising.
• Visit aboutads.info to manage interest-based advertising preferences.
• Disable cookies in your browser settings. Note: this may affect some site functionality.

5. How We Use Collected Data

The limited, anonymised data we collect is used solely to:

• Understand how visitors use the site and improve the user experience.
• Monitor site performance and fix technical issues.
• Display relevant advertisements that support the free operation of this site.

6. Third-Party Technologies

Our tools use the following third-party technologies, all processed locally in your browser:

• Google MediaPipe Face Landmarker — used for smile analysis and face shape detection (Apache 2.0 licence).
• face-api.js — used for age estimation. Models are fetched from public CDNs and cached in your browser.

Smile Tracker is not affiliated with or endorsed by Google.

7. Children's Privacy

This site is not directed at children under the age of 13. We do not knowingly collect any information from children under 13. Users under 18 should have parental or guardian consent before using any photo-based tool on this site. If you believe a child under 13 has provided information through this site, please contact us and we will take appropriate action.

8. Your Rights

Depending on your location, you may have the following rights regarding any personal data we process:

• Right to access — request a copy of data we hold about you.
• Right to erasure — request deletion of your data (note: we hold no photo data).
• Right to object — object to processing of your data for advertising purposes.
• Right to opt out of cookies — see Section 4 for opt-out options.

To exercise any of these rights, contact us at thesmiletracker@gmail.com.

9. Data Retention

We do not retain any photo data — it is never transmitted to us. Anonymised analytics data collected via Google Analytics is subject to Google's own retention policies. Cookie data expires according to the respective cookie lifetimes set by Google AdSense and Google Analytics.

10. Changes to This Policy

We may update this Privacy Policy from time to time. The "Last updated" date at the top of this page reflects any changes. Continued use of the site after changes are posted constitutes your acceptance of the revised policy.

11. Contact Us

If you have any questions or concerns about this Privacy Policy or our data practices, please contact us: