Terms of Service

§ 1 Scope

These Terms of Service apply to all contracts between:

(hereinafter "Provider") and any natural or legal person (hereinafter "Customer") using the service offered at knallhart.dev.

Deviating terms of the Customer are not recognised unless the Provider expressly agrees to them in writing.

§ 2 Service description

The Provider offers a one-time digital feedback service at knallhart.dev that works as follows:

• The Customer submits a website URL and an email address.
• After payment, the system automatically takes a desktop full-page screenshot of the submitted URL.
• The screenshot is analysed using an AI model (Google Gemini API).
• The Customer receives an email with three specific critiques covering UX, design, or page structure, along with actionable recommendations.

The feedback is AI-assisted and does not constitute professional agency, legal, or business consulting. The Provider does not guarantee that implementing the recommendations will lead to specific outcomes (e.g. higher conversion rates or increased revenue).

§ 3 Contract formation

The presentation of the service on this website does not constitute a legally binding offer, but an invitation to place an order (invitatio ad offerendum).

A contract is formed when the Customer completes the form, consents to these Terms and the waiver of withdrawal rights, and successfully completes payment via Stripe. A confirmation email is sent upon receipt of payment.

§ 4 Pricing and payment

The price for one feedback analysis is €10.00. As a small business owner pursuant to § 19 UStG, the Provider does not charge VAT. Payment is made exclusively through Stripe.

Payment is due upon completion of the order process. The Provider reserves the right to adjust pricing for future orders at any time.

§ 5 Right of withdrawal and exclusion

Consumers generally have a 14-day right of withdrawal.

Exclusion of the right of withdrawal: As this is a digital service that is provided automatically and immediately after payment, the right of withdrawal expires pursuant to § 356(5) BGB, provided the Customer has explicitly agreed — before placing the order — that the Provider may begin performance before the withdrawal period expires, and has confirmed awareness that the right of withdrawal is thereby forfeited.

This consent is collected via the checkbox in the order form. Placing an order is not possible without this consent.

§ 6 Customer obligations

The Customer warrants that:

• they are authorised to submit the website URL for analysis (e.g. as the owner or with the owner's permission);
• the submitted URL does not contain unlawful, criminal, or third-party-infringing content;
• the URL does not lead to malware, phishing, or illegal content;
• the email address provided is correct and accessible.

In the event of a breach of these obligations, the Customer bears sole responsibility. The Provider reserves the right to refuse service in such cases and issue a refund.

§ 7 Limitation of liability

The Provider is liable without limitation for damages arising from injury to life, body, or health, and for intentional or grossly negligent conduct.

Otherwise, the Provider's liability is limited to the amount paid for the respective order (€10.00). Liability for indirect damages, lost profits, or missed business results is excluded.

The feedback does not constitute professional advice. The Provider accepts no liability for damages arising from the implementation or non-implementation of the recommendations.

§ 8 Usage rights

The feedback report is produced exclusively for the Customer. The Customer receives a simple, non-transferable right of use for personal or business purposes.

The Provider retains the right to use anonymised example feedback (without customer data, email, or identifiable URL) for marketing and demonstration purposes. Publication with names or URLs requires the Customer's express written consent.

§ 9 Service availability

The Provider strives for high availability but cannot guarantee uninterrupted service. Technical outages or failures at third-party providers (Vercel, Stripe, Google, Resend) may temporarily affect delivery.

If delivery is not possible due to technical reasons, the full payment will be refunded.

§ 10 Privacy

Data processing is carried out in accordance with our Privacy Policy, which forms part of these Terms.

§ 11 Amendments

The Provider reserves the right to amend these Terms with effect for the future. Changes will be published on this page. For contracts already concluded, the Terms valid at the time of conclusion apply.

§ 12 Governing law and jurisdiction

German law applies, excluding the UN Convention on Contracts for the International Sale of Goods (CISG).

For consumers within the EU, the mandatory consumer protection provisions of their country of residence apply where more favourable.

The place of jurisdiction for merchants and legal entities under public law is the Provider's registered place of business, to the extent permitted by law.

§ 13 Severability

If any provision of these Terms is or becomes invalid, the validity of the remaining provisions shall not be affected. The invalid provision shall be replaced by the applicable statutory rule.