Terms & pricing

General terms of use, pricing and the statutory right of withdrawal for Heureka's prepaid credits.

§ 1 Scope and provider

These terms govern the use of the Heureka learning app ("the service") by consumers. The provider is:

Tom Skoropinski
TSK Software · Einzelunternehmen
Raiffeisenstraße 2
63633 Birstein
Deutschland
contact@getheureka.com

§ 2 Conclusion of contract

You register with your Google account; access is by invitation only (allow-list). A paid contract is concluded only when you purchase prepaid credits (a top-up). Using the free parts of the app does not require a purchase.

§ 3 Description of the service

Heureka is an AI-assisted learning app. Prepaid credits are consumed by AI features (creating cards, generating and evaluating review questions, voice transcription and image generation). Reviewing your existing cards is free. We provide the service with reasonable care but give no guarantee of availability, uninterrupted operation, or any particular learning outcome. AI-generated content can be incomplete or incorrect.

§ 4 Prices and payment

Credits are sold as one-time top-ups of 10 € or 20 €, each including 19 % German VAT. Payment is processed by Stripe; we never receive your card details. Credits are added to your balance immediately after successful payment and are consumed as you use AI features. You can optionally enable auto-recharge, which tops up your saved package automatically when your balance runs low, capped by your monthly limit. Consumed credits are non-refundable, cannot be paid out in cash and are not transferable.

§ 5 Right of withdrawal

Consumers have a statutory right of withdrawal. The following withdrawal instruction applies.

Right of withdrawal: You have the right to withdraw from this contract within fourteen days without giving any reason. The withdrawal period is fourteen days from the day of the conclusion of the contract.

To exercise your right of withdrawal you must inform us (Tom Skoropinski, Raiffeisenstraße 2, 63633 Birstein, contact@getheureka.com) of your decision by a clear statement (e.g. an email). You may use the model withdrawal form, but this is not obligatory. To meet the deadline it is sufficient to send your communication before the period has expired.

Consequences of withdrawal: If you withdraw, we will reimburse all payments received from you without undue delay and within fourteen days at the latest, using the same means of payment you used, unless expressly agreed otherwise.

Early expiry: For the supply of digital content not on a tangible medium, the right of withdrawal expires if you have expressly consented to performance beginning before the end of the withdrawal period and have acknowledged that you thereby lose your right of withdrawal once the contract has been fully performed (§ 356(5) BGB). We obtain this consent from you before every top-up. As credits are made available immediately, the right of withdrawal lapses once the credits have been fully used.

§ 6 Liability

We are liable without limitation for intent and gross negligence and for injury to life, body or health. For slight negligence we are liable only for the breach of a material contractual obligation, limited to the foreseeable, typical damage. Heureka does not provide legal, medical, tax or other professional advice; AI-generated content is provided without warranty and must not be relied upon as such advice.

§ 7 Term and termination

The contract runs for an indefinite term. You can stop using the service and delete your account at any time. Any remaining prepaid credit is not paid out; please use it up before deleting your account. We may terminate or restrict access for good cause (e.g. abuse).

§ 8 Final provisions

German law applies. If you are a consumer, mandatory consumer-protection provisions of your country of residence remain unaffected. Should individual provisions be invalid, the validity of the remaining provisions is unaffected. The German version of these terms is authoritative; this English text is a translation for convenience.

These terms are provided to the best of our knowledge and do not constitute legal advice.