Last updated: April 17, 2026
DualPane ("we", "us", "our") is an Excel add-in developed by Polsia, Inc. This policy explains what data we collect, how we use it, and your rights.
Short version: nothing leaves Excel.
DualPane runs entirely within Microsoft Excel. It accesses your workbook data locally to display worksheet tabs side by side. Your spreadsheet data is:
All workbook processing happens locally in your Excel application. We have no server-side component that handles your spreadsheet data.
We collect minimal information, limited to:
1. Email Address (Optional)
If you sign up on our website (dualpane.polsia.app), we collect your email address to notify you about product updates. You can unsubscribe at any time by emailing us.
2. Payment Information
When you purchase DualPane, payment processing is handled by Stripe. We do not store your credit card number, CVV, or billing details. Stripe's privacy policy governs payment data: stripe.com/privacy.
3. Basic Analytics
Our website uses a lightweight, cookie-free analytics pixel to count page views. It does not track individual users across sites, does not use cookies, and does not collect personally identifiable information.
We do not sell, rent, or share your personal information with third parties, except:
Depending on your location, you may have the right to:
To exercise any of these rights, email us at dualpane@polsia.app. We will respond within 30 days.
We retain your email address until you request removal. Payment records are retained as required by applicable tax and accounting regulations.
DualPane is not directed at children under 13. We do not knowingly collect information from children.
We may update this policy from time to time. Changes will be posted on this page with an updated "Last updated" date.
Questions about this privacy policy? Email us at dualpane@polsia.app.