Terms of Service

1. Introduction

Welcome to Booko ("the App"). These Terms of Service ("Terms") govern your use of the Booko application developed and operated by jiayifun ("Developer", "we", "us").

By downloading, installing, or using Booko, you agree to be bound by these Terms. If you do not agree, please do not use the App.

2. Description of Service

Booko is a reading highlight management app that allows you to:

• Paste and organize reading notes from sources such as Apple Books, WeChat Read, Kindle, and more.
• Visualize and browse your highlights locally on your device.
• Sync data across your Apple devices via iCloud.

Booko is a local content-management tool. It does not provide user accounts, social networking, public content hosting, publishing, public display, user-to-user distribution, or public sharing features. We do not operate servers that host user-created content.

Optional features may connect directly to services selected and authorized by you, such as iCloud and the WeRead Skill gateway. Purchase transaction information is processed by Apple and RevenueCat as described in our Privacy Policy.

3. User Eligibility

You must be at least 13 years old (or the minimum age required in your jurisdiction) to use Booko. By using the App, you represent that you meet this requirement.

4. Account

Booko does not require or provide any Booko account registration. Content is stored locally on your device and, only if you enable iCloud sync, may be synced through your personal iCloud account, which is managed by Apple.

5. Purchases and Payments

5.1 In-App Purchase

Booko offers a one-time in-app purchase ("Lifetime Unlock") through Apple's App Store. It unlocks the non-AI premium features included in the applicable purchase offering for as long as Booko continues to make those features available, subject to these Terms and applicable law. Features that use AI models, cloud inference, or related computing services are not included in Lifetime Unlock and, if offered, may require a separate purchase, subscription, usage-based payment, or other plan clearly disclosed before purchase. "Lifetime" does not promise that the App, updates, compatibility, or any third-party service will be available indefinitely.

5.2 Billing

All purchases are processed by Apple through the App Store. RevenueCat provides purchase validation, entitlement management, restoration, and purchase analytics as described in our Privacy Policy. By making a purchase, you also agree to Apple's App Store Terms of Service.

5.3 No Auto-Renewal

The Lifetime Unlock is a one-time purchase and does not auto-renew. No subscription billing applies.

5.4 Restoring Purchases

If you reinstall Booko or use a new device signed in with the same Apple ID, you can restore your purchase from within the app at any time. No additional fees will be charged.

5.5 Refunds

All refund requests are handled by Apple in accordance with App Store policies. The Developer cannot directly issue refunds.

5.6 Free Features

Certain features of Booko are available for free. The Developer may change which features are free or premium in future versions. Any change affecting an existing purchase will be handled in accordance with applicable law and App Store requirements.

6. User Content

6.1 Local Tool and No Public Sharing

As between you and the Developer, content you create or import into Booko, such as reading notes and highlights, remains yours or subject to the rights of its original owner. Booko stores and processes this content locally, except when you choose to use iCloud sync or an external import feature.

The Developer does not actively access, review, edit, host, publish, recommend, or distribute your content. Because Booko has no public posting or sharing service, the Developer generally has no technical ability to monitor content stored on your device or in your personal iCloud account.

If you copy, export, send, or publicly share content using operating-system functions or another third-party service, you initiate that action independently. It is not a content publishing or sharing service provided by Booko.

6.2 Your Responsibility

You are solely responsible for content you create, import, copy, store, process, export, send, or share, and for ensuring that you have all permissions and lawful grounds required to do so. Booko does not verify the accuracy, legality, ownership, or licensing status of user content.

To the extent permitted by law, you are responsible for claims, disputes, penalties, or losses arising from your content, your violation of these Terms, or your unlawful use of the App. If your intentional or negligent violation causes the Developer a direct and documented loss, you will be responsible for that loss to the extent permitted by applicable law.

7. Optional WeRead Skill Connection

Booko includes an optional client-side connection to the official WeRead Skill gateway. The feature is disabled until you independently obtain an API key from WeRead and choose to enter it in Booko. Booko does not create a WeRead account, obtain a key on your behalf, or access your WeRead data without your action.

When you initiate a connection, search, cover lookup, or import, Booko sends the API key and the request needed for that action directly from your device to the official WeRead gateway. Requests may include a search term, book identifier, pagination information, and the WeRead Skill version. The gateway may return book metadata, cover addresses, your notebook book list, reading progress, highlights, and thoughts. Selected data is then stored locally in Booko and may sync through your personal iCloud account if you enable iCloud sync.

For Apple Books and Kindle imports, WeRead cover matching is optional and requires your choice for each import. Choosing cover matching authorizes Booko to send the relevant book titles and authors directly to the official WeRead gateway for that purpose; choosing local import only does not.

The API key is stored locally in your device Keychain and is not synced through iCloud. The Developer does not operate a proxy for these requests and does not receive or store the API key or returned WeRead data on its own servers.

Booko is an independent product and is not affiliated with, sponsored by, or endorsed by Tencent or WeRead. The WeRead Skill and gateway are third-party services operated by Tencent or WeRead, and their availability and permitted use remain subject to their current terms, privacy practices, technical rules, and your authorization.

You may use the connection only with an API key issued for your own WeRead account and only to access data you are authorized to access. You must not provide another person's key, bypass access controls, obtain unauthorized data, interfere with the service, or use imported content in violation of intellectual-property, privacy, confidentiality, or other rights.

You are responsible for safeguarding your key and for actions you initiate with your WeRead account. Tencent or WeRead may change, restrict, or discontinue the gateway at any time. The Developer may modify, suspend, or remove the connection where reasonably necessary for legal compliance, third-party requirements, security, compatibility, or service availability.

The WeRead Skill, API key, and gateway access are provided by WeRead, not sold by Booko. Booko paid features relate only to Booko's own local library capacity and other Booko functionality.

8. Intellectual Property

The Booko app, including its design, code, icons, and visual elements, is the intellectual property of the Developer. You may not copy, modify, distribute, or reverse-engineer any part of the App.

Booko does not grant you any rights in books, covers, notes, highlights, or other third-party material you import. You must obtain any permission required for your use of that material.

9. Prohibited Conduct

You agree not to:

• Reverse-engineer, decompile, or disassemble the App.
• Use the App or any imported content for an unlawful or fraudulent purpose.
• Create, import, copy, store, process, or assist with content that violates applicable law, promotes terrorism, extremism, violence, gambling, fraud, obscenity, sexual exploitation, or criminal activity, or unlawfully discloses state secrets or other protected information.
• Infringe copyrights, trademarks, privacy, personal information, reputation, confidentiality, trade secrets, or other rights of any person.
• Access another person's account or data without authorization, bypass technical restrictions, scrape services, or use credentials that you do not have the right to use.
• Create or distribute malicious code or use the App to compromise any device, account, network, or third-party service.
• Attempt to interfere with the App's functionality.

10. Disclaimer of Warranties

Booko is provided on an "AS IS" and "AS AVAILABLE" basis. The Developer makes no warranties, express or implied, regarding the App's reliability, availability, or fitness for a particular purpose.

We do not guarantee that:

• The App will be error-free or uninterrupted.
• iCloud sync will always function correctly (iCloud is managed by Apple).
• The WeRead Skill gateway or any other third-party service will remain available, permitted, secure, or compatible.
• Data will never be lost (please maintain your own backups).

11. Limitation of Liability

To the maximum extent permitted by applicable law, the Developer is not liable for indirect, incidental, special, consequential, or punitive damages arising from your use of the App, including loss of data, third-party account restrictions, or claims resulting from content or credentials supplied or actions initiated by you.

To the maximum extent permitted by applicable law, the Developer's aggregate liability relating to the App will not exceed the amount you paid for the Lifetime Unlock. Nothing in these Terms excludes or limits liability that cannot lawfully be excluded or limited, including liability arising from the Developer's fraud, intentional misconduct, or gross negligence where applicable.

12. Termination

You may stop using Booko at any time by deleting the App from your device.

The Developer reserves the right to discontinue the App or any feature at any time, with reasonable notice when possible.

13. Changes to These Terms

We may update these Terms from time to time. Changes will be reflected by updating the "Last updated" date at the top. Continued use of the App after changes constitutes acceptance of the revised Terms.

14. Governing Law

These Terms shall be governed by and construed in accordance with the laws of the Developer's country of residence, without regard to conflict of law principles.

15. Severability

If any provision of these Terms is found to be unenforceable or invalid, that provision will be limited or eliminated to the minimum extent necessary so that the remaining provisions of these Terms will otherwise remain in full force and effect.

16. Contact

If you have any questions about these Terms, please contact us at:

Email: [email protected]