Terms of Use

1. Operator and scope

These Terms apply to the BookTamer website at booktamer.app and the BookTamer mobile apps for iOS and Android, together called the Services. By using the Services, you agree to these Terms.

The Services are provided by WEBGEHEUER OÜ, registry code 16922871, Estonian Business Register, Sepapaja 6, 15551 Tallinn, Estonia. Contact: hello@booktamer.app.

Our Privacy Policy explains how personal data is handled.

2. What BookTamer provides

The app helps you organize TBR, current, and finished books, keep journal entries and ratings, view reading statistics, search book catalogs, make local backups, and share content at your direction. The website provides product and release information, historical editorial content, store links, and external book links.

BookTamer currently has no user account or BookTamer-managed cloud sync. Features can differ by platform, app version, territory, and free or Premium access.

3. Eligibility and acceptable use

BookTamer is a general-audience reading service and is not directed at children. If you do not have legal capacity to agree to these Terms or make a purchase, use the Services only with permission from a parent or legal guardian.

You must not:

• use the Services for unlawful activity or to infringe another person's rights;
• interfere with the Services, their security, or systems used to provide them;
• attempt to bypass Premium access controls or other technical restrictions; or
• use the Services in a way that harms other people, devices, or systems.

4. App license and store terms

The iOS app is licensed under the Apple Standard EULA. These Terms govern the BookTamer service and supplement that license. Google Play's terms apply to Android downloads and purchases. If these Terms conflict with applicable app-store terms about a download, app license, or store purchase, the store terms control for that subject, subject always to mandatory law.

The app is licensed for personal, non-commercial use. You may use it only as permitted by these Terms, the applicable store rules, and the law. You may not copy, sell, reverse engineer, or distribute the app except where applicable law expressly allows it.

5. Premium subscriptions and purchases

Some features require BookTamer Premium. Available monthly and annual subscriptions, prices, billing periods, and any eligible trial are displayed by Apple App Store or Google Play before purchase. A trial applies only when the store offer shows one.

Auto-renewing subscriptions continue until canceled through the store that processed the purchase. Renewal, cancellation, refunds, withdrawal rights, price changes, failed payments, grace periods, and access after expiry are governed by that store's rules and mandatory consumer law. Deleting BookTamer does not cancel a subscription.

RevenueCat verifies the Premium entitlement, and the app supports purchase restoration. A purchase does not guarantee access on a different store platform unless the applicable store and entitlement support it. BookTamer will continue to recognize valid historical lifetime Premium entitlements, subject to technical verification, service availability, and mandatory law.

6. Your entries, images, sharing, and backups

You keep your rights in the notes, images, and other material you add. You must have permission to use custom covers, profile images, and anything you choose to share. Because this content remains primarily on your device, BookTamer does not receive a broad license to private library content that you do not send to us.

The manual backup is a partial, readable JSON file, not cloud storage or a complete data export. You are responsible for choosing a safe storage or sharing destination and for protecting copies. Device backups and exported files may remain after the app is removed. BookTamer cannot restore a local library from a company database because no such database exists.

7. Book data and external services

Book searches can use ISBNdb and Google Books. The Services can display third-party catalog information, covers, store destinations, and historical sources. This information can be incomplete, outdated, inaccurate, or unavailable. Third-party services apply their own terms and privacy policies.

Some links in the historical German archive are affiliate links. They are identified on the page. If you buy through one of those links, BookTamer may receive a commission at no additional cost to you.

8. Intellectual property

BookTamer's app, website, brand, original editorial text, screenshots, and design are protected by applicable intellectual-property laws. Book covers, catalog metadata, provider marks, open-source software, and user material remain the property of their respective owners and are used under applicable licenses or permissions.

9. Availability and changes

The Services depend on app stores, catalog providers, devices, operating systems, and other external services. We may maintain, update, add, remove, or discontinue features for security, legal, technical, or product reasons. We do not promise uninterrupted availability or that every feature will remain compatible with every device or platform.

We will respect access already paid for as required by applicable store rules and mandatory law. Valid historical lifetime Premium entitlements will remain recognized while BookTamer continues to provide the relevant app and the entitlement can be verified.

10. Warranties and liability

Nothing in these Terms excludes warranties, remedies, or liability that cannot legally be excluded. Within those limits, the Services are provided as available. You should keep suitable backups of important local data and verify third-party book information before relying on it.

WEBGEHEUER OÜ is not responsible for loss caused solely by a third-party service, unsupported device change, or your chosen backup or sharing destination where that loss was outside our reasonable control. This does not limit responsibility for damage caused intentionally or through gross negligence, personal injury, or any other liability that applicable law does not allow us to limit.

11. Ending use

You can stop using BookTamer at any time. Uninstalling the app does not cancel a store subscription and may not remove exported or operating-system backup copies. A serious or repeated breach of these Terms may end the license to use the app, subject to applicable store rules and mandatory law.

12. Governing law and disputes

Estonian law applies to these Terms, without taking away mandatory consumer protections available under the law of your country of residence. Mandatory rules about competent courts remain unaffected. Before starting a formal dispute, please contact hello@booktamer.app so we can try to resolve it informally.

13. Changes and contact

We may update these Terms when the Services, providers, or law changes. The current version and effective date will remain on this page. For material changes, we will provide additional notice in the app or on the website where reasonably possible. Changes do not reduce rights that already apply under mandatory law.

Questions about these Terms can be sent to hello@booktamer.app.