Privacy Policy

Last updated: May 4, 2026

Opus ("we", "our", or "us") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, and safeguard your information when you use Opus.

Information We Collect

Account Information: When you sign in with Google, we receive your name, email address, and profile picture. This information is used solely to identify you within Opus.

Documents and Presentations: The content you create in Opus (manuscripts, presentations, notes) is stored either:

Locally on the server where Opus is installed, or
In your connected cloud storage provider (Google Drive, Dropbox, Box, or Nextcloud)

Usage Data: We may collect basic usage information such as feature usage patterns to improve Opus. This data is anonymized and never includes your document content.

How We Use Your Information

To provide and maintain the Opus service
To identify you and enable collaboration features
To sync your documents with your chosen storage provider
To improve and develop new features

Data Storage and Security

Your documents are stored in the location you choose:

Local storage: Documents remain on your server and are never transmitted to us
Cloud storage: Documents are stored in your personal cloud account (Google Drive, Dropbox, etc.). We access only files created by Opus or files you explicitly select through the file picker, not your entire cloud storage

We use industry-standard security measures to protect your account information. All data transmission uses HTTPS encryption.

Third-Party Services

Opus integrates with the following third-party services:

Google: For authentication and optional Google Drive storage
Dropbox: For optional cloud storage
Box: For optional cloud storage
Nextcloud: For optional self-hosted cloud storage

Each of these services has their own privacy policy. We only request the minimum permissions necessary to provide storage functionality.

Google API Services Usage

Opus uses Google API Services for authentication and cloud storage. Our use of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements.

Specifically, Opus:

Uses Google Sign-In data (name, email, profile picture) only to identify you within the application
Accesses Google Drive only to read and write files you explicitly select through the file picker or files created by Opus
Does not use Google user data for advertising purposes
Does not transfer Google user data to third parties except as necessary to provide the service
Does not use Google user data to train AI or machine learning models

Data Sharing

We do not sell, trade, or otherwise transfer your personal information to third parties. We do not use your document content for any purpose other than providing the Opus service to you.

Your Rights

You have the right to:

Access: View all data associated with your account
Export: Download your documents at any time in standard formats
Delete: Remove your account and all associated data
Disconnect: Revoke access to connected cloud storage providers at any time

Self-Hosted Instances

If you are using a self-hosted instance of Opus, your data is stored on your own infrastructure. The operator of that instance is responsible for data security and privacy compliance.

Children's Privacy

Opus is not intended for children under 13. We do not knowingly collect personal information from children under 13.

Changes to This Policy

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

Contact Us

If you have questions about this Privacy Policy, please contact us at support@opus.phd.