Terms of Service

These Terms govern Dr. Katze accounts and contracts between users and the operator identified in the Imprint. Mandatory consumer protection rules in a consumer’s country of habitual residence remain unaffected.

Dr. Katze is a digital medical-German learning service with lessons, vocabulary, reading, writing, speaking, progress, audio and optional AI-assisted explanations, transcription and feedback. It is not medical advice, diagnosis, treatment, professional licensing or a promise of exam or career success. Content must be independently checked before real-world clinical use.

A personal account requires a reachable email address and accurate information. Credentials must be protected and may not be shared. Automated registration, abusive duplicate accounts, access-control circumvention and use of another person’s payment details are prohibited.

Some features use artificial intelligence and identify this in context. AI output can be incomplete or wrong and must be reviewed critically. Never enter or record real patient data, another person’s health data, secrets, passwords or other confidential personal data. Use fictional or effectively anonymised cases only.

Where offered, the card-backed trial lasts seven days and includes nine server-selected lessons: three each from A0–A1, A2–B1 and B2–C2. The selection remains tied to the account. A trial is available only once. Any subsequent paid subscription, price, billing interval and automatic renewal are highlighted immediately before ordering. Cancelling before the trial ends prevents the subsequent charge.

Email confirmation creates the free-account contract. A paid contract is formed only after the user submits an order through a button clearly indicating a payment obligation and the order is accepted. Scope, total price including applicable tax, billing interval, minimum term, renewal and cancellation are shown before ordering and confirmed on a durable medium.

The total price shown immediately before ordering applies. The stated payment provider processes payment; Dr. Katze does not store complete card details. Access may be restricted after notice if payment fails, without limiting statutory consumer rights.

The selected checkout option determines term and renewal. Renewable subscriptions can be cancelled for the end of the current billing period through the provided online cancellation function or customer area. Statutory termination rights remain unaffected; ordinary cancellation normally preserves access until the paid period ends.

Consumers generally have a fourteen-day right of withdrawal for distance contracts. Instructions, the model form and any legally required online withdrawal function are provided on the Withdrawal page. Early performance begins only when expressly requested; statutory rules on compensation and expiry remain unaffected.

For the contract term, users receive a personal, non-transferable licence. Content, software, marks and design may not be republished, sold, systematically scraped, used to train third-party models or technically circumvented without permission. Mandatory statutory exceptions remain unaffected.

The operator aims for reliable service but does not promise uninterrupted availability. Maintenance, security work, internet failures and third-party outages can cause restrictions. Changes for security, compliance or teaching quality are permitted within statutory limits; material adverse changes are announced in advance.

Statutory rights for defective digital products apply. Liability is unlimited for intent, gross negligence, injury to life, body or health, guarantees and mandatory product liability. For slight negligence affecting an essential contractual duty, liability is limited to foreseeable typical loss; otherwise it is excluded where legally permitted.

Material or repeated breaches may lead to proportionate suspension or termination, normally after an opportunity to remedy. Users can delete their account in settings after ending active paid contracts. Statutory retention duties and outstanding claims remain unaffected.

German law applies, excluding the CISG, without removing mandatory protection in a consumer’s country of habitual residence. Consumer-dispute information appears in the Imprint. If a provision is invalid, statutory law applies and the remaining provisions continue.