PercentLab

Privacy Policy

Last Updated: January 2025

Introduction

PercentLab ("we," "our," or "us") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you visit our website percentlab.app (the "Site"). This policy complies with the General Data Protection Regulation (GDPR) and the California Consumer Privacy Act (CCPA).

By using our Site, you agree to the collection and use of information in accordance with this policy. If you do not agree with the terms of this Privacy Policy, please do not access the Site.

Information We Do NOT Collect

PercentLab is designed with privacy in mind. We want to be clear about what we DO NOT collect:

  • We do not require user registration or accounts
  • We do not collect names, email addresses, or contact information (except when voluntarily provided via our contact form)
  • We do not store your calculation data or inputs
  • We do not collect payment information (our service is free)
  • We do not use cookies for tracking or identification purposes
  • We do not sell, rent, or share any personally identifiable information

Information We Collect

1. Analytics Data

We use Google Analytics 4 to understand how visitors use our Site. This service collects:

  • Browser type and version
  • Operating system
  • Pages visited and time spent on pages
  • Referring website
  • Anonymized IP address (IP anonymization is enabled)
  • General geographic location (country/city level only)

Purpose: To understand usage patterns, improve our service, and identify technical issues.

Legal Basis (GDPR): Legitimate interest in improving our service.

Opt-Out: You can opt out by enabling Do Not Track in your browser settings, which we respect, or by using browser extensions like uBlock Origin.

2. Advertising Data

We use Google AdSense to display advertisements on our Site. Google may use cookies and similar technologies to:

  • Serve ads based on your visit to this and other websites
  • Collect data about your browsing behavior for ad personalization

Purpose: To generate revenue that allows us to keep the service free.

Third-Party Privacy Policy: Google's use of advertising cookies is governed by Google's Privacy Policy. You can learn more and opt out at https://policies.google.com/technologies/ads

3. Contact Form Data

If you choose to contact us through our contact form, we collect:

  • Name (optional)
  • Email address
  • Message content

Purpose: To respond to your inquiries and provide customer support.

Legal Basis (GDPR): Consent (by submitting the form) and legitimate interest in responding to inquiries.

Retention: We retain contact form submissions for up to 2 years, unless you request deletion.

How Your Calculations Are Processed

All percentage calculations are performed entirely in your web browser using JavaScript. Your calculation inputs and results:

  • Never leave your device
  • Are not transmitted to our servers
  • Are not stored or logged anywhere
  • Disappear when you close or refresh the page

This design ensures complete privacy for your calculations and data.

Cookies and Tracking Technologies

Our Site uses the following types of cookies:

Essential Cookies

We use minimal essential cookies for:

  • Theme preference (dark/light mode)
  • Basic site functionality

These cookies do not identify you personally and are necessary for the Site to function properly.

Analytics Cookies

Google Analytics cookies help us understand how visitors interact with our Site. These are anonymized and do not contain personally identifiable information.

Advertising Cookies

Google AdSense may use cookies for ad personalization and measurement. You can control these through your Google Ad Settings.

Your Rights Under GDPR (EU/UK Users)

If you are located in the European Economic Area (EEA) or the United Kingdom, you have the following rights:

  • Right to Access: Request copies of your personal data
  • Right to Rectification: Request correction of inaccurate data
  • Right to Erasure: Request deletion of your data
  • Right to Restrict Processing: Request limitation of data processing
  • Right to Data Portability: Request transfer of your data
  • Right to Object: Object to processing based on legitimate interests
  • Right to Withdraw Consent: Withdraw consent at any time

To exercise any of these rights, please contact us at the email address provided in the Contact section below.

Your Rights Under CCPA (California Residents)

If you are a California resident, you have the following rights under the California Consumer Privacy Act:

  • Right to Know: Request information about data collected, used, disclosed, or sold
  • Right to Delete: Request deletion of personal information
  • Right to Opt-Out: Opt out of the sale of personal information (Note: We do not sell personal information)
  • Right to Non-Discrimination: Not receive discriminatory treatment for exercising CCPA rights

To submit a request, please use the contact information provided below.

Do Not Track Signals

We respect Do Not Track (DNT) signals. If your browser has DNT enabled, we will not load Google Analytics or other tracking scripts on your device.

Third-Party Services

We use the following third-party services:

These third parties have their own privacy policies governing their collection and use of information.

Data Security

We implement appropriate technical and organizational security measures to protect your data, including:

  • HTTPS encryption for all data transmission
  • Regular security updates and patches
  • Minimal data collection practices
  • Access controls and monitoring

However, no method of transmission over the Internet is 100% secure. While we strive to protect your information, we cannot guarantee absolute security.

Children's Privacy

Our Site is not intended for children under the age of 13 (or 16 in the EEA). We do not knowingly collect personal information from children. If you believe we have collected information from a child, please contact us immediately so we can delete it.

International Data Transfers

Our Site is hosted on servers that may be located in various countries. By using our Site, you consent to the transfer of your information to countries outside your country of residence, which may have different data protection laws.

For EEA/UK users: Data transfers to the United States and other countries are conducted in accordance with GDPR requirements, including the use of Standard Contractual Clauses where applicable.

Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last Updated" date.

We encourage you to review this Privacy Policy periodically for any changes. Changes are effective when posted on this page.

Contact Us

If you have any questions about this Privacy Policy, want to exercise your privacy rights, or have concerns about how your data is handled, please contact us:

PercentLab
Email: privacy@percentlab.app
Contact Form: /contact

We will respond to your request within 30 days (or as required by applicable law).