BookGPT terms and conditions

1. Provider and scope

Your contracting party for BookGPT is:

Maximilian Löser IT Solutions
c/o IP-Management #6776
Ludwig-Erhard-Straße 18
20459 Hamburg
Germany
Email: hello@book-gpt.app

These terms apply to registration, the purchase of credits and the use of BookGPT. They apply to consumers and businesses. A consumer is a natural person who enters into the contract mainly for purposes outside their trade, business or profession. A business customer acts for purposes relating to their trade, business or profession.

A business customer's conflicting terms apply only if we expressly accept them in text form.

2. Account and conclusion of the contract

Paid functions require a personal account. Registration details must be accurate and kept up to date. Login credentials may not be shared with third parties.

The display of credit packages is an invitation to place an order. The user selects a package and is redirected to Stripe Checkout. Before the paid order is completed, Stripe displays the package, total price, applicable taxes and payment method. The user places a binding order by pressing the button clearly labelled as creating an obligation to pay. The contract is concluded when Stripe confirms successful payment and BookGPT credits the account.

The contract documents and confirmation are provided electronically. Users should save the confirmation for their records.

3. BookGPT service

BookGPT assists with planning, generating, editing and exporting books, text, covers and related content. External AI providers perform these functions. Users can select the provider for text functions where the app offers a choice. Image functions may use a technically configured sequence of providers.

AI output is probabilistic. The same input can produce different results. BookGPT is obliged to provide the booked technical functions. It does not promise a particular content, quality, commercial outcome, publication or acceptance by a platform.

4. Credits and usage

Credits are prepaid balance for paid BookGPT functions. Before a paid call, the app displays an estimated credit cost or spending cap. The account is charged the usage shown for the completed call. If a call fails for technical reasons, credits may be charged only to the extent that a usable provider service has already been produced and the interface identifies the charge. Statutory remedies for defective performance remain unaffected.

Purchased credits are tied to the account. They cannot be transferred or redeemed for cash. This does not limit refunds resulting from a valid withdrawal, a justified defect claim or another mandatory legal right.

Purchased credits have no fixed expiry date. They remain available until used or until the user requests account deletion. Before account deletion, the app warns that any remaining credits will be permanently lost. If BookGPT is permanently discontinued or we terminate an account without cause, we will refund the price of unused purchased credits on a pro rata basis.

Free, promotional or bonus credits may have an expiry date disclosed when they are granted. They are not redeemable for cash.

5. Packages, prices and payment

BookGPT currently offers one-time purchase packages at EUR 39.00, EUR 99.00 and EUR 149.00. The package content, number of credits and price displayed in BookGPT and Stripe Checkout immediately before the order are decisive.

Prices shown to consumers are total prices. They include statutory VAT where it applies. Before the order is completed, Stripe displays the tax charged. Taxes, payment methods and availability may differ for buyers outside Germany.

Payments are processed by Stripe. Only the payment methods displayed in Checkout are available. The payment method is charged after Checkout is completed. BookGPT does not store full card or bank account details.

6. Withdrawal instructions for consumers

Right of withdrawal

Consumers have the right to withdraw from this contract within fourteen days without giving any reason.

The withdrawal period is fourteen days from the date on which the contract is concluded.

To exercise the right of withdrawal, the consumer must inform us, Maximilian Löser IT Solutions, c/o IP-Management #6776, Ludwig-Erhard-Straße 18, 20459 Hamburg, Germany, phone +49 163 7929930, email hello@book-gpt.app, of the decision to withdraw by an unequivocal statement, such as a letter or email. The model withdrawal form below may be used but is not mandatory.

It is sufficient for the consumer to send the withdrawal notice before the withdrawal period expires.

Effects of withdrawal

If the consumer withdraws, we will reimburse all payments received for the withdrawn purchase. Reimbursement will be made without undue delay and no later than fourteen days after we receive the withdrawal notice. We will use the same payment method used for the original transaction unless expressly agreed otherwise. The consumer will not incur any reimbursement fee.

If the consumer expressly requested that performance classified as a service begin during the withdrawal period, the consumer may owe a proportionate amount for the part supplied before withdrawal where the statutory requirements are met.

Early loss of the right for digital content

For digital content not supplied on a tangible medium, the right of withdrawal ends early under section 356(6) of the German Civil Code if:

1. we have begun performance,
2. the consumer first expressly agreed that performance may begin before the withdrawal period expires,
3. the consumer acknowledged that this causes the right of withdrawal to be lost when performance begins, and
4. we provided the contract confirmation required by law.

A separate unchecked consent box in Checkout is required for use before the withdrawal period expires. Without consent, use of purchased credits for digital content will begin only after the withdrawal period expires. If the consumer gives valid consent and requests book or content generation before that date, the right of withdrawal for the affected digital content may end when performance begins.

Where a BookGPT function is legally classified as a service rather than digital content, section 356(5) of the German Civil Code applies. For a paid service contract, the right will generally end only upon full performance and only if the consents and acknowledgements required by that provision have been given.

7. Model withdrawal form

Consumers wishing to withdraw may complete and send the following form:

To Maximilian Löser IT Solutions, c/o IP-Management #6776, Ludwig-Erhard-Straße 18, 20459 Hamburg, Germany, email hello@book-gpt.app

I hereby withdraw from the contract concluded by me for the purchase of the following credit package or the supply of the following service:

• Ordered on:
• Consumer's name:
• Consumer's address:
• Email address of the BookGPT account:
• Date:
• Signature, only if submitted on paper:

8. Rights in input and output

Users retain their rights in their own input and uploaded content. For the duration of the contract, users grant us the rights technically necessary to store and process content, send it to the selected AI provider and return the requested output.

To the extent that transferable rights arise in generated output and are available to us under the participating AI provider's terms, we transfer those rights to the user upon full payment. The transfer is unlimited in time, territory and scope. It does not cover rights that do not arise or cannot legally be transferred.

AI output may not qualify for copyright protection due to a lack of human authorship. Similar or identical output may be generated for other people. We do not guarantee exclusivity or protectability and do not perform rights or trademark clearance.

9. User obligations

Users may enter, upload, edit and publish only content they are legally permitted to use. Prohibited uses include illegal content, infringement of copyright, trademark, personality or privacy rights, deception, malware and content that promotes criminal offences.

Before publication, users must:

• verify facts, quotations, sources and calculations,
• clear third-party rights and obtain required permissions,
• remove sensitive or personal data unless its use is lawful,
• comply with legal and platform-specific AI disclosure duties, and
• comply with the rules of the selected distribution channel.

When publishing through Amazon KDP, users must follow the then-current requirements for disclosing AI-generated text, images or translations. The app does not replace a review of the KDP rules.

BookGPT may reject manifestly unlawful requests, temporarily suspend access and preserve or remove content where required by law and proportionate.

10. Public book pages

Books are private by default. A public page is created only after separate approval. By approving publication, the user permits us to make the selected title, author name, cover, sample and files publicly available. The user may withdraw approval for the future.

The user is responsible for ensuring that published content is lawful. Search engines and third parties may cache public content. After approval is withdrawn, we have limited control over those external copies.

11. Availability and changes to functions

We aim to provide a reliable service but do not promise uninterrupted or error-free availability. Maintenance, security measures, disruption affecting hosting, payment or AI providers, and events outside our control may temporarily limit functions.

We may develop, replace or discontinue functions provided this does not unreasonably impair the contractual purpose or the use of credits already purchased. If a material function is permanently restricted, we will offer a reasonable replacement or reimburse unusable purchased credits on a pro rata basis.

12. Remedies for defects

Statutory remedies for defective digital products and services apply. Users are asked to report errors, with a description and the error reference if available, to hello@book-gpt.app. This request does not shorten statutory periods.

An AI result that is technically generated as agreed is not defective merely because the user dislikes its content. The agreed function, parameters displayed before the call and statutory requirements are decisive.

13. Liability

We have unlimited liability for intent and gross negligence, injury to life, body or health, liability under the German Product Liability Act and all other mandatory statutory liability.

For a slightly negligent breach of a material contractual obligation, liability is limited to foreseeable loss typical of the contract. Material obligations are those whose performance is essential for proper performance of the contract and on which the user may regularly rely. Liability for other slight negligence is excluded to the extent permitted by law.

These limitations also apply for the benefit of our legal representatives and agents. Mandatory consumer rights and liability under an express guarantee remain unaffected.

Users remain responsible for the professional, legal and factual review of AI output. This provision does not shift any liability that mandatory law places on us.

14. Term, termination and account deletion

The free account relationship continues for an indefinite period. There is no subscription or recurring base fee. Users may delete the account at any time in the security settings.

Account deletion permanently removes books, files, sessions, support conversations and account data. Remaining credits are lost if the user confirms deletion after a clear warning. Mandatory refund and withdrawal rights remain unaffected.

We may suspend or terminate an account for cause. Cause includes serious or repeated legal violations, attacks on the service, payment fraud and circumvention of technical safeguards. Where reasonable, we will first allow time to remedy the breach. If we terminate without cause, we will reimburse unused purchased credits on a pro rata basis.

15. Changes to these terms

New purchases are governed by the version displayed when the order is placed. We may change terms governing an existing relationship where required by a change in law, security requirements or necessary technical development, provided the change does not alter the contractual balance to the user's detriment.

We will notify users of material changes in text form at least four weeks before they take effect. A detrimental change to the price, credit quantity, usage rights or validity of credits already purchased requires the user's express consent unless mandated by law.

16. Consumer dispute resolution

The European Commission's former Online Dispute Resolution platform was discontinued on 20 July 2025.

We are neither willing nor obliged to participate in dispute resolution proceedings before a consumer arbitration board.

17. Governing law, jurisdiction and language

The law of the Federal Republic of Germany applies, excluding the UN Convention on Contracts for the International Sale of Goods. Consumers habitually resident in another country retain the protection of mandatory consumer law in that country.

Statutory rules on jurisdiction apply to consumers. If the user is a merchant, a legal entity under public law or a special fund under public law, Hamburg is the place of jurisdiction to the extent such an agreement is permitted by law.

If a provision is invalid, the remaining provisions remain effective and the statutory rule applies in place of the invalid provision.

This English version is provided for convenience. The German version prevails in the event of a conflict. This language clause does not limit mandatory consumer rights or the interpretation most favourable to a consumer where required by law.