// privacy.policy

Last updated: February 2026

Back to HomepageView Pricing

Introduction

Quilon ("we", "us", "our", or "Company") operates the Quilon application and website. This Privacy Policy explains how we collect, use, disclose, and safeguard your information.

We are committed to protecting your privacy. If you have questions about this Privacy Policy, please contact us at privacy@quilon.dev.

What Information We Collect

Account Information

When you create a Quilon account, we collect your email address and account password. This information is used to authenticate your identity and deliver our service.

Clipboard Data

Quilon syncs clipboard content across your devices. This data is encrypted end-to-end (AES-256) and never stored on our servers. It flows through our servers in transit but is never persisted.

Device Information

We may collect device type, OS version, and app version for service reliability, debugging, and compatibility support.

Usage Analytics

We may collect service usage signals (for example: feature usage counts and operational error logs) to improve performance, stability, and product quality.

Payment Information

Payment information (credit card details) is handled by our payment processor, LemonSqueezy. We never see or store your credit card information. Only LemonSqueezy processes and stores this data.

Private Share & File Transfer

Files shared via Private Share or P2P file transfer are end-to-end encrypted and relayed through our servers without storage. The server cannot access, read, or decrypt any file content. Share sessions expire automatically after 30 minutes.

How We Use Your Information

  • Authenticate your account and provide clipboard sync services
  • Process payments and manage your subscription
  • Send transactional emails (password resets, receipts, etc.)
  • Improve our service through anonymized analytics
  • Debug and resolve technical issues
  • Comply with legal obligations
  • Prevent fraud and abuse

Zero-Knowledge Architecture

Quilon is built with privacy as the core principle. Your clipboard data is encrypted on your device before leaving it. Here's how it works:

  1. Your clipboard data is encrypted with AES-256 on your device
  2. Only the encrypted data is sent to Quilon servers
  3. Our servers cannot decrypt this data—only your devices have the keys
  4. Encrypted data is relayed in real-time to your other devices
  5. Data is never stored on our servers (relay-only architecture)

Important: Even if Quilon's servers were compromised, no plaintext data could be accessed because we never have the encryption keys.

Data Sharing and Disclosure

We do not sell, trade, or rent your personal information to third parties.

Third-Party Services

We use the following third parties to deliver our service:

Legal Requests

We may disclose your information if required by law, court order, or government request. We will attempt to notify you before disclosing your information, unless legally prohibited.

Data Retention

  • Account data: Retained until you delete your account
  • Clipboard data: Not stored. Real-time sync only. Deleted immediately after delivery.
  • Payment information: Retained by LemonSqueezy per their policy
  • Analytics data: Retained for 90 days, then anonymized
  • Logs: Retained for 30 days, then deleted

Your Rights

Depending on your location, you may have the following rights:

GDPR (Europe)

  • Right to access your personal data
  • Right to rectification (correct inaccurate data)
  • Right to erasure ("right to be forgotten")
  • Right to restrict processing
  • Right to data portability
  • Right to object to processing

CCPA (California)

  • Right to know what personal data is collected
  • Right to delete personal data
  • Right to opt-out of sale of personal data
  • Right to non-discrimination for exercising CCPA rights

To exercise these rights, email us at privacy@quilon.dev.

Security

We implement industry-standard security measures to protect your data, including end-to-end encryption, secure password hashing, and TLS for data in transit. However, no method of transmission over the Internet is 100% secure.

Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by updating the "Last updated" date above. Your continued use of Quilon signifies your acceptance of the updated Privacy Policy.

Contact Us

If you have questions about this Privacy Policy or our privacy practices, please contact us at:

Email: privacy@quilon.dev

Website: quilon.dev