Privacy Policy

Last updated: February 6, 2026

Overview

Multipl.tools (“we,” “us,” or “our”) builds software that helps organizations understand and reduce waste. This privacy policy explains how we collect, use, and protect your information across our products, including the Burn Counter Chrome extension and the Multipl.tools website.

Our core principle: your sensitive data stays on your device. We are privacy-first by design, not by afterthought.

Burn Counter Chrome Extension

Data stored locally on your device

The Burn Counter extension operates with a local-only architecture. The following data is stored exclusively on your device using Chrome's built-in storage APIs:

  • Compensation data (salary/hourly rates) — Encrypted using AES-256-GCM with a unique encryption key generated on your device. This data never leaves your browser.
  • Participant profiles — Names and roles of meeting participants, stored locally.
  • Meeting history — Records of past meetings including duration and calculated costs, stored locally.
  • Active meeting state — Current meeting timer data, stored in session storage (cleared when you close the browser).
  • Extension settings — Your display preferences and theme selection.

Encryption

All compensation data is encrypted using AES-256-GCM before storage. A unique encryption key is generated on first install using the Web Crypto API and stored locally. Each encryption operation uses a unique initialization vector (IV). We never have access to your encryption key or unencrypted compensation data.

No data collection (free tier)

The free version of Burn Counter makes zero network requests. No analytics, no telemetry, no usage tracking. Your data stays entirely on your device.

Premium Features (Optional)

If you choose to create an account and subscribe to Premium, the following additional data is processed:

  • Account information — Email address and authentication data, managed by Clerk (our authentication provider).
  • Payment information — Processed by Stripe. We never store your credit card details.
  • Theme preferences — Your selected visual theme, synced across devices.

Important: Even with Premium, your compensation data (salary/hourly rates) remains encrypted on your local device and is never transmitted to our servers. Cross-device sync applies only to non-sensitive data like theme preferences.

Multipl.tools Website

When you visit multipl.tools, we collect minimal data necessary to operate the website:

  • Authentication data — If you sign in, Clerk manages your session. See Clerk's Privacy Policy.
  • Hosting logs — Standard server logs (IP address, browser type, pages visited) as maintained by Vercel. See Vercel's Privacy Policy.

We do not use cookies for advertising or tracking. We do not run third-party analytics scripts. We do not sell, share, or transfer your data to third parties for advertising or marketing purposes.

Third-Party Services

We use the following third-party services:

  • Clerk — Authentication and user management (Premium accounts only).
  • Stripe — Payment processing (Premium subscriptions only).
  • Vercel — Website hosting and deployment.
  • Supabase — Database hosting for Premium account data.

Each service processes only the minimum data required for its function. We do not share user data between services beyond what is necessary for product functionality.

Data Retention & Deletion

  • Local extension data — Deleted when you uninstall the extension or clear browser data. You control this entirely.
  • Premium account data — Retained while your account is active. Contact us at privacy@multipl.tools to request account deletion. We will delete your data within 30 days.
  • Payment records — Retained by Stripe per their data retention policies and applicable financial regulations.

Children's Privacy

Our services are not directed at children under the age of 13. We do not knowingly collect personal information from children. If you believe a child has provided us with personal information, please contact us and we will delete it promptly.

Changes to This Policy

We may update this privacy policy from time to time. If we make material changes, we will notify users through the extension or website before the changes take effect. Your continued use of our services after changes are posted constitutes acceptance of the updated policy.

Contact Us

If you have questions about this privacy policy or our data practices, contact us at:

privacy@multipl.tools