Effective Date: January 1, 2026
These Terms govern your use of mobile and desktop applications ("Apps") developed and published by kaifeng sang ("we," "us," or "our").
If you download an App from Apple App Store or Google Play, the store's terms and policies also apply. In case of conflict, the store terms control only to the extent required by the store.
Apple and Google are not parties to these Terms and are not responsible for the Apps, except as required by applicable law.
If you download an App from the Apple App Store, you acknowledge that Apple is a third-party beneficiary of these Terms and may enforce these Terms against you.
By downloading, installing, accessing, or using our Apps, you agree to be bound by these Terms. If you do not agree, do not use the Apps.
Some Apps may allow or require an account. You agree to:
Subject to your compliance with these Terms, we grant you a limited, non-exclusive, non-transferable, revocable license to use the Apps for your personal and lawful purposes.
You must not:
The Apps and all related content and intellectual property are owned by us or our licensors. These Terms do not grant you any ownership rights.
You retain ownership of content you create, upload, or store in the Apps. You are responsible for your content and represent that you have the necessary rights to it.
If an App requires us to process your content to provide the service (for example, syncing, formatting, or displaying it), you grant us a limited license to use your content only for operating and improving the App.
The Apps may provide tools, templates, calculations, reminders, or informational content. Unless explicitly stated otherwise, such content is provided for general information only and does not constitute medical, legal, financial, or other professional advice. You are solely responsible for how you use the Apps and any decisions you make.
You are responsible for maintaining appropriate backups of your content. To the maximum extent permitted by law, we are not responsible for any loss, corruption, or failure to store or transmit data, including losses caused by device failure, operating system updates, third-party services, network issues, or user actions.
Some Apps may offer in-app purchases through Apple App Store or Google Play. Payments are processed by the store provider, and we do not receive or store full payment card details.
Subscriptions (if offered) renew automatically unless cancelled through your store account settings before the renewal date.
Refund requests are handled by Apple or Google under their policies. We do not process refunds directly.
The Apps may integrate third-party services (for example, analytics, crash reporting, ads, or cloud services). Your use of third-party services may be subject to their terms and policies.
Your privacy matters. Our collection and use of personal information is described in our Privacy Policy .
To the maximum extent permitted by law, the Apps are provided "as is" and "as available" without warranties of any kind. We do not guarantee uninterrupted, secure, or error-free operation.
Some jurisdictions do not allow the exclusion of certain warranties or the limitation of certain damages. Nothing in these Terms affects your statutory rights that cannot be waived.
To the maximum extent permitted by law, we are not liable for indirect, incidental, special, consequential, exemplary, or punitive damages, or any loss of data, profits, or goodwill arising from your use of the Apps.
To the maximum extent permitted by law, our total liability for any claim relating to an App will not exceed the amount you paid (if any) to use that App in the 12 months before the event giving rise to the claim.
To the extent permitted by law, you agree to defend, indemnify, and hold us harmless from claims arising out of your use of the Apps, your content, or your violation of these Terms.
We may suspend or terminate access to an App if we reasonably believe you violated these Terms or if required for security, legal, or operational reasons.
We may update these Terms from time to time. We will post the updated Terms on this page and update the effective date above.
These Terms are governed by the laws of the jurisdiction where we are established, excluding conflict of law rules, unless applicable law requires otherwise.
If you have questions about these Terms, please contact us at:
Email: sangkl@163.com