Scope
These terms apply to the use of the Engrain app and its related server services, in particular the AI features, provided by Codext GmbH, Frankenstr. 10, 74549 Wolpertshausen, Germany (“we”).
You buy the app from Apple’s App Store or Google Play. The purchase itself, payment and refunds are governed by the terms of the respective store.
License on Android
Purchases through Google Play are subject to the Google Play Terms of Service. We grant you a simple, non-transferable right to use the app for your own purposes on your devices.
One-time purchase
Engrain is a one-time purchase. There is no subscription and there are no recurring costs. The price is shown in the respective store. The AI features are included in the purchase price.
AI features and fair use
The AI features are included under fair use. Currently:
- 300 AI actions per month per installation; creating cards from a photo or PDF counts as two actions,
- up to 50 cards per generation request.
You can see your current quota in the app’s settings.
We may limit, temporarily suspend or change the AI features to a reasonable extent and with due regard to your interests where necessary to prevent abuse, to keep the service stable, or when our AI provider is unavailable.
The AI features require an internet connection and a successful purchase check. All other features of the app, in particular studying, work independently of them and offline.
AI output
AI output is generated automatically and can be wrong, incomplete or outdated. Check important content against reliable sources, especially for exams and in fields like medicine or law. AI output is not professional advice.
Your content
Your cards and content belong to you; we claim no rights to them. You are responsible for the content you send to our AI features. In particular, you
- only send content you are allowed to use, for example for your own studying within the limits of the law,
- don’t send illegal content or other people’s personal data without a legal basis,
- don’t try to bypass quotas or the purchase check, overload the service or use it in an automated way outside the app.
In case of violations we may block the AI features for the installation concerned.
Warranty
Statutory warranty rights apply. We give no guarantee beyond that.
Liability
We are liable without limitation for intent and gross negligence, for injury to life, body or health, under the German Product Liability Act and to the extent of any guarantee we have given.
For slight negligence we are liable only for breach of an essential contractual obligation, meaning an obligation whose fulfilment makes the proper performance of the contract possible in the first place and on whose fulfilment you may regularly rely. In that case, liability is limited to the foreseeable damage typical for this type of contract. Otherwise, liability for slight negligence is excluded.
For loss of data we are liable only for the effort that would have been needed to restore it had regular backups been made. Please make regular backups; the app helps you with that.
These limitations also apply in favour of our employees and agents.
Changes to these terms
We may update these terms with effect for the future, for example for new features or changes in the law. Changes that put you at a significant disadvantage only apply if you agree to them. The current version is always available on this page.
Governing law and dispute resolution
German law applies, excluding the UN Convention on Contracts for the International Sale of Goods. If you are a consumer, the mandatory consumer protection provisions of the country where you have your habitual residence remain unaffected.
We are neither willing nor obliged to take part in dispute resolution proceedings before a consumer arbitration board.