Terms of Service

These Terms of Service (the “Terms”) are a binding agreement between you and Linus Publications, Inc. (“Company”, “we”, “us”, or “our”) governing your use of ActiveBook — the website at activebook.ai and the ActiveBook reading applications for iOS, macOS, Android, and Windows (together, the “Service”).

By creating an account, making a purchase, or otherwise using the Service, you agree to these Terms and to our Privacy Policy, Cookie Policy, Copyright & DMCA Policy, and Refund Policy, which are incorporated into these Terms by reference. If you do not agree, do not use the Service.

1. Eligibility and accounts

• You must be at least 13 years old (or the minimum age required in your country) to use the Service. If you are under the age of majority where you live, you may use the Service only with the consent of a parent or legal guardian who agrees to these Terms on your behalf.
• You agree to provide accurate, current information when registering and to keep it up to date.
• You are responsible for safeguarding your password and for all activity under your account. Accounts are personal: you may not share, sell, or transfer your account or your access to purchased content.
• Notify us promptly at support@activebook.ai if you suspect unauthorized use of your account.

2. The Service and platforms

ActiveBook is a platform for publishing, selling, and reading interactive digital books and learning materials (“Content”). The Service is available through the website and through native reader apps on iOS, macOS, Android, and Windows. We may add, change, or discontinue features of the Service at any time. We will make reasonable efforts to give notice of changes that materially reduce the Service’s core functionality for paid content.

3. Security, devices, and app integrity

• Device limits. To protect authors and licensed content, access to purchased content may be limited to a maximum number of registered devices per account at one time. You can manage (deregister) devices from your account settings or by contacting support.
• App verification. Our reader apps may attach a verification token to their requests so that we can confirm requests come from a genuine, unmodified ActiveBook app. We may refuse to serve protected content to clients that fail this verification.
• Sessions. We may sign you out of inactive sessions or revoke sessions for security reasons.

4. Purchases, licensing, and access to content

• License, not sale. When you buy Content, you buy a personal, non-exclusive, non-transferable, revocable license to access and use that Content through the Service for your own personal, non-commercial use (including personal study and coursework). You do not acquire ownership of the Content or any copy of it.
• Where purchases happen. All purchases are made on the ActiveBook website and are processed by our payment provider, Stripe. The reader apps do not sell content or offer in-app purchases. Content you have purchased on the website becomes available in the apps when you sign in.
• Prices and taxes. Prices are shown at checkout and may change at any time. You are responsible for any applicable taxes; where required, taxes are added at checkout.
• Coupons. Promotional coupons are subject to their stated conditions, may be withdrawn at any time, and have no cash value.
• Refunds. Refunds are governed by our Refund Policy.
• Continuity of access. We intend for purchased Content to remain available to you through the Service. In rare cases (for example, where an author’s rights lapse or Content must be removed for legal reasons) Content may be withdrawn; where reasonably possible we will provide notice and, where appropriate, a remedy such as a refund or replacement.

5. Authors and instructors

If you use an author or instructor account to create, upload, or publish Content on the Service (“Author”), the following additional terms apply:

• Warranty of rights. You represent and warrant that you own, or hold all necessary rights and permissions to, everything you upload — including text, images, figures, data sets, quizzes, and interactive or embedded materials — and that your Content does not infringe any third party’s intellectual-property, privacy, or other rights, and complies with applicable law.
• License to us. You grant Company a worldwide, non-exclusive, royalty-free license to host, store, reproduce, format, display, distribute, and deliver your Content through the Service for the purposes of operating, promoting, and improving the Service, for as long as your Content remains on the Service.
• Attribution and sources. You are responsible for including accurate attribution and source credits for any third-party material your Content lawfully incorporates, as described in our Copyright & DMCA Policy.
• Editorial review. Content and revisions you submit may pass through a review and approval workflow before publication. We may decline, unpublish, or require changes to Content at our reasonable discretion, including for legal, quality, or policy reasons.
• Accuracy. You are responsible for the accuracy of your Content. Educational Content is provided for general informational and instructional purposes and is not professional advice.
• Collaborators. If designers or other collaborators edit your Content through the Service, you remain responsible for the published result.

6. User content (reviews, ratings, notes, and annotations)

• The Service lets you post reviews and ratings (visible publicly) and create highlights, notes, and annotations (private to your account) (“User Content”).
• You retain ownership of your User Content. You grant Company a worldwide, non-exclusive, royalty-free license to host, store, display, and (for reviews and ratings) publish it as part of the Service.
• User Content must be your own, must be honest, and must not be unlawful, infringing, deceptive, hateful, harassing, obscene, or spam. Reviews may be moderated; we may edit for formatting or remove User Content that violates these Terms.

7. Interactive and third-party content in books

• Content on the Service may include interactive elements — exercises, quizzes, simulations, calculators, 3D/AR elements, and embedded HTML materials — some of which are authored or supplied by third parties.
• Interactive and embedded materials are provided as-is as part of the Content they belong to. They run in a restricted (sandboxed) environment inside the reader, but we do not guarantee they are error-free.
• Third-party materials remain the property of their respective owners and may carry their own attribution and license notices. See our Copyright & DMCA Policy for sources, attribution, and takedown procedures.

8. AI-generated and AI-assisted content

• Portions of the Content offered on the Service, and certain features of the Service (for example, in-book assistants or study aids where offered), may be created or assisted by artificial-intelligence tools.
• AI-assisted material can contain errors or omissions. It is provided for general informational and educational purposes only and is not professional, legal, medical, financial, or other specialist advice. Always verify important information independently.
• Authors remain responsible for Content they publish, including AI-assisted portions, as set out in Section 5.

9. Acceptable use

You agree not to, and not to help anyone else to:

• copy, download, scrape, extract, redistribute, publicly display, sell, or sublicense Content, except as expressly permitted by the Service’s features;
• circumvent, disable, or interfere with access controls, device limits, app verification, or other content-protection or security measures;
• share account credentials or make purchased Content available to people outside your account;
• reverse engineer, decompile, or disassemble any part of the Service, except where such a restriction is prohibited by law;
• use the Service to store or transmit malicious code, or probe, scan, or test the vulnerability of the Service without our written authorization;
• use automated means (bots, crawlers) to access the Service other than standard search-engine indexing of public pages;
• upload or post anything unlawful, infringing, or fraudulent, or misrepresent your identity or affiliation;
• use the Service or Content to train machine-learning models without our prior written consent.

10. Intellectual property and copyright complaints

The Service — including its software, design, logos, and the “ActiveBook” name and marks — is owned by Company or its licensors and is protected by intellectual-property laws. Content is owned by its authors, publishers, or other rights holders. If you believe material on the Service infringes your copyright, follow the notice procedure in our Copyright & DMCA Policy.

11. Third-party services

The Service relies on third-party providers, including Stripe (payment processing on Stripe-hosted pages), sign-in providers you may choose (Google, Apple, Microsoft, LinkedIn), a font-delivery CDN, and hosting infrastructure. Their services are governed by their own terms and privacy policies, and we are not responsible for third-party services we do not control. See our Privacy Policy for details on data shared with these providers.

12. Termination and account deletion

• You may stop using the Service or request deletion of your account at any time, as described in the Privacy Policy.
• We may suspend or terminate your account or access to the Service if you materially breach these Terms (including the acceptable-use rules and payment obligations), where required by law, or to protect the Service, other users, or rights holders. Where practicable we will give notice and an opportunity to remedy.
• On termination, your license to access purchased Content through the Service ends. Sections that by their nature should survive termination (including Sections 5–6 license grants for content that remains published, and Sections 13–16) survive.

13. Disclaimer of warranties

The Service and all Content are provided “as is” and “as available”. To the fullest extent permitted by law, we disclaim all warranties, express or implied, including merchantability, fitness for a particular purpose, non-infringement, accuracy, and uninterrupted or error-free operation. Nothing in these Terms excludes warranties or rights that cannot be excluded under applicable law, including mandatory consumer-protection rights in your country of residence.

14. Limitation of liability

To the fullest extent permitted by law: (a) Company will not be liable for indirect, incidental, special, consequential, or punitive damages, or for lost profits, data, or goodwill; and (b) Company’s total liability for all claims relating to the Service in any 12-month period will not exceed the greater of the amounts you paid us in that period or USD 100. These limitations do not apply to liability that cannot be limited by law, including for willful misconduct or gross negligence.

15. Indemnification

You agree to indemnify and hold Company harmless from claims, damages, and reasonable costs (including attorneys’ fees) arising out of your Content (if you are an Author), your User Content, or your breach of these Terms — except to the extent caused by our own breach or misconduct. This section does not apply where prohibited by applicable consumer law.

16. Governing law and disputes

These Terms are governed by the laws of the United States and the State of New York, without regard to conflict-of-law rules, and disputes will be resolved in the state or federal courts located in New York, whose jurisdiction you and we accept — except that if you are a consumer in a jurisdiction whose law grants you mandatory rights or a home forum, those rights are unaffected. Both parties will first attempt in good faith to resolve any dispute informally by contacting legal@activebook.ai.

17. Changes to these Terms

We may update these Terms from time to time. When we do, we will revise the “Last updated” date above and, for material changes, provide additional notice (for example, by email or an in-Service notice) before the changes take effect. Your continued use of the Service after changes take effect constitutes acceptance of the updated Terms.

18. App-store terms

• Apple. If you use our iOS or macOS apps, these Terms are between you and Company only, not Apple. Apple has no obligation to furnish maintenance or support for the apps and is not responsible for any product warranties or claims relating to them. Apple and its subsidiaries are third-party beneficiaries of these Terms as they apply to the Apple apps and may enforce them against you. You represent that you are not located in an embargoed country and are not on any U.S. government restricted-party list.
• Google. Use of our Android app must also comply with the Google Play Terms of Service.
• Microsoft. Use of our Windows app must also comply with the Microsoft Store terms.
• Reader apps do not offer registration or purchases; accounts are created and Content is purchased on the website.

19. Miscellaneous

These Terms, together with the policies they incorporate, are the entire agreement between you and Company about the Service. If any provision is found unenforceable, the rest remains in effect. Our failure to enforce a provision is not a waiver. You may not assign these Terms; we may assign them in connection with a merger, acquisition, or sale of assets.

20. Contact

Linus Publications, Inc.
Legal: legal@activebook.ai
Support: support@activebook.ai
Website: https://activebook.ai