Marcus

Terms of Service

Last updated: July 26, 2026

1. Who we are

Marcus is a reading app operated by Vuvee (“Marcus”, “we”, “us”). These Terms govern your use of the Marcus mobile app and this website (marcus.vuvee.me). By creating an account or using the app you agree to these Terms. If you do not agree, please do not use Marcus. You can reach us any time at marcus@vuvee.me.

2. The service

Marcus is an ADHD-friendly reading app: you import your own books (EPUB/TXT), read with a speed-adjustable word tracker, get instant in-context word explanations and AI summaries, listen with read-along audio, and optionally sync your library and progress to the cloud. Reading works offline; AI features and sync require an internet connection and an account.

3. Eligibility and accounts

• You must be at least 13 years old (or older where your local law requires it).
• You can sign up with an email address. Keep your credentials secure — you are responsible for activity under your account.
• Provide accurate information and keep it up to date.

4. Your content

Books and files you import remain yours. You are responsible for making sure you have the right to use the content you import — only add books you legally own or that are in the public domain. By using cloud sync or AI features you grant us a limited license to store and process your content solely to provide those features to you. We claim no other rights over your content. That license ends when the content goes: delete a book and its stored file is removed from our storage, and deleting your account removes everything we hold for you. We never publish your books, share them with other users, or use them to train AI models.

5. Subscriptions and payments

• Marcus offers a free tier and a paid subscription with additional features (“Marcus Pro”).
• Purchases are made through the Apple App Store or Google Play and are processed by Apple or Google together with our subscription provider, RevenueCat. We never see or store your card details.
• Prices are shown before you buy. Subscriptions renew automatically until cancelled in your App Store or Google Play account settings — deleting the app does not cancel a subscription.
• Refunds are handled by Apple or Google under their respective store policies. Nothing in these Terms limits any statutory refund rights you may have.

6. AI features

Word explanations, summaries and recaps are generated by an AI model. They are provided for convenience and may occasionally be inaccurate or incomplete. They are not professional advice, and they are not a substitute for the underlying text. Use your own judgment.

7. Acceptable use

You agree not to:

• import or distribute content that infringes someone else’s rights;
• reverse-engineer, scrape, probe or disrupt the app or our servers;
• use the service to build a competing dataset or resell access to it;
• use Marcus for anything unlawful.

8. Our intellectual property

The Marcus app, its design, branding, illustrations and code are owned by us and protected by law. We grant you a personal, non-exclusive, non-transferable license to use the app. If you send us feedback, we may use it without obligation to you.

9. Service changes

We may improve, modify or discontinue parts of the service as Marcus evolves. Where a change materially affects a paid feature, we will let you know in advance where reasonably possible.

10. Disclaimers

Marcus is provided “as is” and “as available”, without warranties of any kind, express or implied, to the maximum extent permitted by law. We do not warrant that the service will be uninterrupted, error-free or that AI output will be accurate.

11. Limitation of liability

To the maximum extent permitted by law, we are not liable for indirect, incidental, special or consequential damages, or loss of data, arising from your use of Marcus. Our total liability for any claim is limited to the amount you paid us in the 12 months before the claim arose (or €20 if you have paid nothing). Nothing in these Terms excludes liability that cannot be excluded by law, including mandatory consumer protections in your country of residence.

12. Termination

You can stop using Marcus and delete your account at any time in the app, or by emailing us. We may suspend or terminate accounts that violate these Terms. Sections that by their nature should survive (e.g. limitations of liability) survive termination.

13. Changes to these Terms

We may update these Terms as Marcus evolves. If a change is material, we will notify you in the app or by email before it takes effect. Continuing to use Marcus after a change means you accept the updated Terms.

14. Governing law

These Terms are governed by the laws of the Republic of Serbia, and disputes are subject to the jurisdiction of the courts of Belgrade, Serbia — except where the mandatory consumer law of your country of residence gives you additional rights or a different forum.

15. Apple App Store

If you download Marcus from the Apple App Store, the following additional terms apply. They are concluded between you and us only, not with Apple Inc. (“Apple”). Where they conflict with the rest of these Terms, they control for App Store downloads.

• Acknowledgement. These Terms are between you and us, not Apple, and we — not Apple — are solely responsible for Marcus and its content.
• Scope of license. Your licence to use Marcus is a non-transferable licence to use it on any Apple-branded device that you own or control, as permitted by the Usage Rules in the Apple Media Services Terms and Conditions, except that Marcus may be accessed by other accounts associated with you via Family Sharing or volume purchasing.
• Maintenance and support. We are solely responsible for providing any maintenance and support for Marcus. Apple has no obligation whatsoever to furnish any maintenance and support services with respect to Marcus.
• Warranty. We are solely responsible for any product warranties, whether express or implied by law, to the extent not effectively disclaimed. If Marcus fails to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price (if any) for Marcus; to the maximum extent permitted by law, Apple will have no other warranty obligation whatsoever with respect to Marcus.
• Product claims. We, not Apple, are responsible for addressing any claims by you or a third party relating to Marcus or your possession and use of it — including product liability claims, any claim that Marcus fails to conform to a legal or regulatory requirement, and claims arising under consumer protection, privacy or similar law.
• Intellectual property. If a third party claims that Marcus or your use of it infringes their intellectual property rights, we — not Apple — will be solely responsible for the investigation, defence, settlement and discharge of that claim.
• Legal compliance. You represent and warrant that you are not located in a country subject to a U.S. Government embargo or designated as a “terrorist supporting” country, and that you are not listed on any U.S. Government list of prohibited or restricted parties.
• Third-party terms. You must comply with any applicable third-party terms of agreement when using Marcus.
• Third-party beneficiary. Apple and its subsidiaries are third-party beneficiaries of these Terms and, upon your acceptance, will have the right to enforce them against you.
• Contact. Any questions, complaints or claims about Marcus can be directed to Vukasin Rancic (Vuvee), Zlatiborska, Smederevo, Serbia, marcus@vuvee.me.

16. Contact

Questions about these Terms? Email marcus@vuvee.me.