Leaf Terms of Use

Last updated: October 17, 2026

These Terms of Use ("Terms") govern your access to and use of the Leaf application for iOS and Android (the "Application"), provided by Color Hub, operated by Luka Katsadze, a sole proprietor based in Tbilisi, Georgia ("we", "us", or "our"). By downloading, installing, creating an account, or otherwise using the Application, you agree to these Terms. If you do not agree, do not use the Application. These Terms include the licence under which the Application is made available to you (Sections 8 and 20) and serve as its end-user licence agreement.

1. Definitions

"Application" means the Leaf mobile app and any related services we provide. "You" or "User" means the natural person using the Application. "App Store" means the platform you obtained the Application from (for example the Apple App Store or Google Play). "Content" means any library entry, rating, note, review, comment, image, username, list, idea, or other material you create, upload, or store through the Application. "Catalog Data" means the third-party information about books, authors, series and adaptations that the Application displays.

2. Eligibility

You must be at least 13 years old to use the Application. In jurisdictions where the minimum age of digital consent under the EU GDPR is higher than 13 (for example 14 in Italy and Spain, 15 in France, 16 in Germany and the Netherlands), users below that age may use the Application only with the consent of a parent or legal guardian. By using the Application you confirm that you meet these requirements.

3. Your Account

You are responsible for keeping your account credentials confidential and for all activity under your account. Notify us promptly at support@colorhub.online of any unauthorised access. You may use the Application without signing in, but such an anonymous account is tied to a single installation and its data may be lost if the Application is removed. Link a sign-in method to keep it. Following other users, commenting, reviewing and reporting require a linked account. You can delete your account at any time in the Application's settings or by emailing us.

4. Acceptable Use

You agree not to, and not to attempt to:

  • use the Application in violation of any applicable law or regulation;
  • reverse-engineer, decompile, disassemble, or otherwise attempt to derive the source code of the Application, except to the extent mandatory law allows it;
  • copy, modify, distribute, sell, or lease any part of the Application, or create derivative works, except as expressly permitted by these Terms;
  • circumvent any security feature, rate limit, paywall, or access control;
  • harass, threaten, impersonate, or stalk another user, including through follows, usernames, profile images, banners, comments, or reviews;
  • upload or post content that is unlawful, infringing, defamatory, hateful, harassing, discriminatory, sexually explicit, violent, or that depicts the sexual exploitation of minors;
  • post spam, advertising, or malware, or interfere with the Application's operation or infrastructure;
  • redistribute or bulk-extract Catalog Data or other users' profiles;
  • access the Application by automated means (bots, scrapers) without our prior written consent.

We may suspend or terminate your access if you materially breach these Terms. Where reasonably possible, we will give advance notice and an opportunity to cure.

5. User Content

You keep all rights in your Content. We do not claim ownership of anything you create or upload to the Application.

To operate the Application, you grant us a worldwide, non-exclusive, royalty-free, limited licence to host, store, transmit, back up, display, and reproduce your Content solely as needed to (i) provide the Application to you, including syncing across your devices; (ii) show the parts of it that are public under your profile and social settings, and your comments and reviews, to other users; (iii) make backups; (iv) perform security, fraud-prevention, and technical operations; and (v) comply with applicable law. This licence ends when you delete the relevant Content or your account, except where retention is required by law or for backups, as limited in our Privacy Policy.

You confirm that you own or have the necessary rights to your Content and that it does not violate these Terms or anyone else's rights. We do not actively monitor Content, but we may remove Content that we reasonably believe violates these Terms or applicable law.

6. Objectionable Content and Community Safety

The Application includes public profiles, comments and reviews in which content created by other users becomes visible to you. We have zero tolerance for objectionable content or abusive behaviour towards other users.

  • Report. Every profile, comment and review can be reported from its menu. Reports reach us directly. A comment reported by several users is hidden automatically until we review it.
  • Block. You can block any user at any time. Blocking stops that user from following you or seeing your profile, and hides their activity from you.
  • Our response. We review reports of objectionable content and abusive users and act within 24 hours of receiving a report, by removing the content, banning the account, or both. A banned account loses access to all social features.

By using the social features, you agree to these rules and to the removal of any Content that violates them.

7. Catalog Data and AI Features

Titles, authors, covers, descriptions, series, bestseller lists and other Catalog Data are supplied by third-party providers and remain the property of those providers or their licensors. They are provided for personal reference within the Application only. We do not guarantee that Catalog Data is accurate, complete, or continuously available. The Application does not provide the text of any book.

The AI assistant generates replies automatically and may be wrong or incomplete. It changes your library only when you ask it to, and you remain responsible for reviewing what it does. Do not rely on it for decisions that matter. AI use is subject to the limits shown in the Application.

8. Intellectual Property

The Application, including its software, design, text, graphics, logos, and trademarks (such as "Leaf" and "Color Hub"), is owned by us or our licensors and protected by intellectual property laws. Subject to these Terms, we grant you a personal, limited, revocable, non-exclusive, non-transferable, non-sublicensable licence to use the Application for your personal, non-commercial purposes. All rights not expressly granted are reserved.

9. Subscriptions and Billing

The Application offers optional auto-renewing subscriptions and one-time purchases that unlock premium features. Price, billing period, and any free trial are shown at the point of purchase and may vary by region and over time.

  • Auto-renewal. Subscriptions renew automatically at the then-current price at the end of each billing period unless you cancel at least 24 hours before the period ends.
  • How to cancel. Manage or cancel your subscription in your Apple App Store or Google Play account settings. Deleting the Application or your account does not cancel a subscription.
  • Free trials. If a free trial is offered, any unused portion is forfeited when you start a paid subscription, unless mandatory consumer law provides otherwise.
  • Refunds. Refunds for in-app purchases are processed by Apple or Google under their policies. Your statutory rights as a consumer, including the EU/UK 14-day cancellation right described in our Privacy Policy, are not affected.
  • Price changes. We will give you advance notice of a price change before it applies to you and, where required by law or by the App Store, ask for your consent.
  • Taxes. Prices may include or exclude applicable taxes depending on your location and the rules of the relevant store.
  • Free features. Features that are free today may change, but we will not remove access to a feature you have already paid for during the period you paid for.

10. Security and Device Responsibility

You are responsible for the security of your device and of the credentials you use to access the Application. We advise against jailbreaking or rooting your device, as this may compromise security and stop the Application from working correctly.

11. Third-Party Services

The Application relies on third-party services that are subject to their own terms, including Google Firebase, Google Cloud (Vertex AI), RevenueCat, Sentry, Open Library, Google Books, and TheTVDB. We are not responsible for third-party services or their content.

12. Connectivity and Data Charges

Some functions of the Application need an internet connection. We are not responsible for limited functionality caused by a lack of connectivity, or for charges from your network provider, including roaming charges. If you are not the bill payer for the device, you confirm that you have the bill payer's permission to use the Application.

13. Updates and Availability

We may release updates to the Application and change the operating systems or devices it supports. You may need to install updates to keep using the Application. We do not guarantee that the Application will always be available or compatible with every device, OS version, or country, and we may add or remove features.

14. Termination

You may stop using the Application and delete your account at any time. We may suspend or terminate your access if (i) you materially breach these Terms; (ii) we are required to by law or by a court or regulator; (iii) there is a serious security or fraud risk; or (iv) we discontinue the Application. Where reasonably possible, we will give you advance notice. If we terminate your access to a paid feature for reasons other than your breach of these Terms, we will refund the pro-rata portion of any prepaid fee covering the period after termination. Sections that by their nature should survive termination (including Sections 5, 8, 15–19 and 24) will survive.

15. Disclaimer of Warranties

The Application is provided "as is" and "as available", without warranties of any kind, express or implied. To the maximum extent permitted by law, we disclaim all warranties, including implied warranties of merchantability, fitness for a particular purpose, non-infringement, and accuracy. We do not warrant that the Application will be uninterrupted, error-free, or secure, or that Catalog Data or AI replies will be accurate. Nothing in these Terms limits any warranty or liability that cannot be limited under applicable consumer law. If you are a consumer in the EU or UK, your statutory rights are not affected.

16. Limitation of Liability

To the maximum extent permitted by law, we will not be liable for any indirect, incidental, special, consequential, exemplary, or punitive damages, or for any loss of profits, revenue, data, goodwill, or business opportunity, arising out of or in connection with the Application or these Terms, on any legal theory, even if we have been advised of the possibility of such damages. Our total liability arising out of or in connection with the Application or these Terms shall not exceed the greater of (a) the amount you paid us for the Application in the 12 months before the event giving rise to the claim, and (b) one hundred US dollars (USD 100). These limitations do not apply to liability for death or personal injury caused by our negligence, fraud, or any liability that cannot be limited under applicable law.

17. Indemnification

To the extent permitted by law, you agree to defend, indemnify, and hold us harmless from any claims, damages, liabilities, costs, and expenses (including reasonable legal fees) arising out of (i) your breach of these Terms; (ii) your Content; (iii) your violation of anyone's rights or of any law; or (iv) your misuse of the Application. This does not apply where the claim arises from our wilful misconduct or where consumer law prohibits such an indemnity.

18. Governing Law

These Terms are governed by the laws of Georgia, without regard to its conflict-of-laws principles. The UN Convention on Contracts for the International Sale of Goods does not apply. If you are a consumer habitually resident in the EU, the UK, or another jurisdiction whose mandatory consumer protection law applies to you, you also keep the protection of those mandatory provisions.

19. Dispute Resolution

Before starting formal proceedings, please contact us at support@colorhub.online and try to resolve the dispute in good faith. A dispute that cannot be resolved informally will be brought before the competent courts of Tbilisi, Georgia. If you are a consumer, you may instead bring proceedings in the courts of the country where you habitually reside. EU consumers may also use the European Commission's Online Dispute Resolution platform at https://ec.europa.eu/consumers/odr/. We are not obliged or willing to take part in proceedings before a consumer arbitration board.

20. Apple App Store Terms

The following applies if you obtained the Application from the Apple App Store. These Terms are concluded between you and us only, not with Apple Inc. ("Apple"), and we alone are responsible for the Application and its content. Apple has no obligation to provide maintenance or support for the Application. If the Application fails to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price (if any); to the maximum extent permitted by law, Apple has no other warranty obligation. Apple is not responsible for addressing any claims relating to the Application, including product liability, regulatory, or consumer protection claims, or claims that the Application infringes a third party's intellectual property rights. You confirm 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 on any U.S. Government list of prohibited or restricted parties. Apple and its subsidiaries are third-party beneficiaries of these Terms and may enforce them against you. Your use of the Application must also comply with the Apple Media Services Terms and Conditions.

21. Digital Services Act (DSA) Contact Point

Under Regulation (EU) 2022/2065 (Digital Services Act), the single point of contact for users, authorities of EU Member States, the European Commission, and the European Board for Digital Services is support@colorhub.online. The language of communication is English. Notices of allegedly illegal content can be sent to the same address or through the in-app report action. We review notices in a timely, diligent, and non-arbitrary manner and inform the sender of our decision and the available means of redress.

22. Force Majeure

We are not liable for any failure or delay caused by events beyond our reasonable control, including natural disasters, war, terrorism, civil unrest, government action, labour disputes, internet or telecommunication failures, power outages, cyber-attacks, or the failure of third-party service providers.

23. Changes to These Terms

We may update these Terms from time to time. We will post the updated version on this page and update the "Last updated" date. For material changes, we will give you reasonable advance notice (for example an in-app notice). If you do not agree to the updated Terms, you must stop using the Application before they take effect.

24. Miscellaneous

  • Entire agreement. These Terms, together with our Privacy Policy and any additional terms for specific features or purchases, are the entire agreement between you and us about the Application.
  • Severability. If any provision is held invalid or unenforceable, the rest remains in effect.
  • No waiver. Our failure to enforce a provision is not a waiver of our right to enforce it later.
  • Assignment. You may not transfer these Terms without our prior written consent. We may assign them in connection with a merger, acquisition, or sale of assets, provided your rights are not adversely affected.
  • No third-party beneficiaries, except Apple as described in Section 20.
  • Language. The English version of these Terms is authoritative. Any translation is provided for convenience only.

25. Contact Us

If you have any questions about these Terms, contact us at support@colorhub.online.