Effective Date: October 23, 2026

Developer & Publisher: Ostryx (ostryx.com)

Contact Email: contact@ostryx.com

1. Introduction & Acceptance of Terms

Welcome to the PDF Viewer application ("App"), designed, created, and developed exclusively by Ostryx. By downloading, installing, accessing, or using this App, you agree to be bound by these Terms of Service ("Terms"). If you do not agree to these Terms, please do not use the App.

2. Intellectual Property & Ownership Rights

Ostryx reserves and retains all full rights, ownership, title, and interest in and to the App. This includes, without limitation, all software code, visual assets, logos, user interfaces, branding elements, design systems, trademarks, and associated intellectual property. Nothing in these Terms shall be construed as transferring any ownership rights to the user.

3. User License Grant

Ostryx grants you a personal, worldwide, non-exclusive, non-transferable, non-sublicensable, and revocable license to use the App on supported personal devices strictly in accordance with these Terms.

4. Restrictions on Use

You expressly agree that you will not, directly or indirectly:

• Modify, reverse engineer, decompile, disassemble, or attempt to derive the source code or underlying structure of the App.
• Sell, resell, lease, license, distribute, or commercially exploit the App or any portion thereof.
• Remove, alter, or obscure any copyright, trademark, or proprietary rights notices displayed in or on the App.
• Use the App for any illegal, unauthorized, or unlawful purpose.

5. User Content & PDF Documents

You retain complete ownership and responsibility for any PDF documents, files, or content accessed, viewed, or processed through the App. Ostryx does not claim any ownership rights over your personal files.

6. Disclaimer of Warranties

The App is provided on an "AS IS" and "AS AVAILABLE" basis without warranties of any kind, either express or implied, including but not limited to implied warranties of merchantability, fitness for a particular purpose, or non-infringement. Ostryx makes no guarantees that the App will meet your requirements or run uninterrupted, secure, or error-free.

7. Limitation of Liability

To the maximum extent permitted by applicable law, in no event shall Ostryx, its affiliates, or its officers be liable for any indirect, incidental, special, consequential, or punitive damages, including loss of data or profit, arising out of or in connection with your use or inability to use the App.

8. Modifications to Terms & App

Ostryx reserves the right to update, modify, or discontinue the App or these Terms at any time. Any changes to these Terms will be effective immediately upon publication. Your continued use of the App following any updates signifies your acceptance of the revised Terms.

9. Contact Information

For any questions or legal inquiries regarding these Terms of Service, please contact us at:

Ostryx

Website: ostryx.com

Email: contact@ostryx.com