PatternMark Terms of Use

These Terms of Use govern your use of the PatternMark mobile application, provided by Sleepycat Software LLC("Sleepycat Software," "we," "us," or "our").

By downloading or using PatternMark, you agree to these Terms.

1. Using PatternMark

PatternMark gives you a limited, personal, non-exclusive, non-transferable license to use the application on devices you own or control, subject to these Terms and the rules of the app store through which you obtained it.

You may not copy, resell, redistribute, reverse engineer, interfere with, or misuse PatternMark except where applicable law expressly permits it.

2. Free version and lifetime unlock

The free version includes a bundled demonstration pattern, the full grid calibration workflow, symbol highlighting, stitch marking, progress tracking, and undo and redo. The free version cannot import personal PDF patterns.

The lifetime unlock is an optional one-time purchase that enables importing personal PDF patterns, unlimited projects and chart pages, and project backup and restoration. It is not a subscription.

3. Purchases and refunds

Purchases are processed by Apple App Store or Google Play, not directly by Sleepycat Software.

Purchase restoration requires the same applicable store account used for the original purchase. Apple purchases do not transfer to Google accounts, and Google purchases do not transfer to Apple accounts.

Refund requests and payment disputes are handled according to the policies of the store that processed the purchase.

4. Your data

PatternMark stores imported PDFs, calibration, symbol matching, and progress data locally on your device. You are responsible for safeguarding your device and for maintaining any backups available through your operating system or PatternMark's project backup export.

Deleting PatternMark, deleting a project, losing the device, or experiencing device or storage failure may result in permanent loss of project data. PatternMark does not currently provide cloud synchronization or independent cloud backups.

Our handling of information is described further in the PatternMark Privacy Policy.

5. Your content

You retain ownership of the patterns, projects, calibration, marks, and other content you create or import using PatternMark. PatternMark does not modify the original PDF.

You are responsible for having the right to import and use the PDF patterns you choose and for ensuring that your use of PatternMark complies with applicable laws and does not infringe the rights of others.

6. Symbol matching and accuracy

Symbol matching runs on your device and produces suggestions, not guaranteed recognition. It may miss matches, include false positives, or produce different results for visually similar symbols.

You remain responsible for reviewing highlighted matches and using manual corrections before relying on progress counts or exported project files.

7. Ownership

PatternMark, including its software, design, branding, and other materials, is owned by Sleepycat Software or its licensors. These Terms do not transfer ownership of PatternMark or grant rights beyond the limited right to use it.

8. Availability and changes

We may update, modify, suspend, or discontinue parts of PatternMark. We do not guarantee that every feature will always be available on every device or operating-system version.

We may also update these Terms. The effective date above will be revised when updated Terms are published.

9. Disclaimer

PatternMark is provided "as is" and "as available." To the maximum extent permitted by law, Sleepycat Software disclaims all warranties, express or implied, including warranties of merchantability, fitness for a particular purpose, accuracy, and non-infringement.

PatternMark is a tracking and document tool. You remain responsible for reviewing your patterns, calibration, symbol selections, and progress before relying on them.

10. Limitation of liability

To the maximum extent permitted by law, Sleepycat Software will not be liable for indirect, incidental, special, consequential, or punitive damages, including lost data, lost progress, or lost profits arising from your use of PatternMark.

Our total liability relating to PatternMark will not exceed the greater of the amount you paid for PatternMark or ten U.S. dollars.

Some jurisdictions do not allow certain warranty exclusions or liability limitations, so portions of these sections may not apply to you.

11. App Store Terms

Your use of PatternMark is also subject to the applicable terms of Apple App Store or Google Play. If these Terms conflict with mandatory app-store terms, the applicable app-store terms control.

For applications obtained through Apple App Store, Apple is not responsible for providing maintenance or support for PatternMark, and Apple is a third-party beneficiary of the applicable license terms.

12. Governing law

These Terms are governed by the laws of the State of Texas, without regard to its conflict-of-law rules, except where the laws of your jurisdiction require otherwise.

13. Contact

Questions about these Terms may be sent to:

Sleepycat Software LLC

patternmark@sleepycatsoftware.com

Support information is available at the PatternMark Support page.