Terms of Use

Last updated: 6 September 2026 · Applies to mathezeit.de and the MatheZeit app

This version is a translation of the German version dated 6 September 2026 and is provided for information purposes. In the event of discrepancies, the German version prevails.

1. Scope and contracting parties

These Terms of Use govern the use of the web services, mobile applications and learning content (hereinafter: the “Platform”) operated by MatheZeit UG (haftungsbeschränkt) (hereinafter: the “Provider”). They apply to all users: teachers, schools and pupils.

When the Platform is used at school, the respective school or school authority concludes a data processing agreement (DPA) and supplementary usage agreements with the Provider. For use by individual teachers, the provisions of this document apply in addition. Teachers who create classes with pupil access thereby confirm that their school has approved the use and has concluded or is concluding the data processing agreement.

2. Services

The Provider offers an adaptive mathematics learning platform for primary school. The services include:

Guided learning units (“MatheZeiten”) for various year groups; the content available at any given time can be viewed in the learning area.
Practice areas (“Knobelbox”, “Basiscamp”) with tasks matched to each child's level of practice, as well as the learning assistant “Mazio”, which gives hints while the child practises (details in the Privacy Policy).
Teacher dashboard with the learning progress of the teacher's own classes and tools for lessons.
Browser access via the MatheZeit Lernsystem and a native app.

The Provider is entitled to further develop, adapt or discontinue functions, provided that this does not significantly impair the core educational purpose.

3. Registration and access

3.1 Teachers

Teachers register with their work email address. Registration is personal; passing on login details to third parties is not permitted.

3.2 Pupils

Pupils log in with a pseudonymous access code generated by the teacher. As a rule, no real names, email addresses or personal data of the children are collected (for details see the Privacy Policy).

4. Permitted use

The Platform may be used exclusively for school and lesson-related purposes. In particular, the following is permitted:

Use in lessons by teachers and their classes.
Use by pupils within the class access set up by the school.
The preparation of evaluations by teachers for educational purposes.

The learning progress data, indicators and classifications in the teacher dashboard serve the observation of learning and the planning of practice and support. They are not intended for grading, performance assessment, promotion or placement decisions and may not be used as a basis for such decisions. The hints given by the learning assistant Mazio are aids for practising and not an assessment.

5. Obligations of users

The following in particular is prohibited:

Circumventing or manipulating technical protection measures.
Distributing malware, spam or unlawful content.
Reading out, automatically querying or copying Platform content to a disproportionate extent.
Reverse engineering, decompiling or creating derivative works of the software.
Using the Platform to harm, harass or discriminate against other users.
Using the Platform for commercial purposes outside its intended use in schools.

In the event of violations, the Provider reserves the right to restrict or terminate access.

6. Content and copyright

All content on the Platform (tasks, texts, graphics, software, mascots, didactic materials) is protected by copyright. It may be used for lessons within the scope of the intended use in schools. Any reproduction, editing, distribution or commercial use beyond this requires the prior written consent of the Provider.

Where content has been created by third parties (e.g. academic partners providing scientific support), their copyrights are respected and identified accordingly.

7. Availability

The Provider endeavours to ensure the highest possible availability of the Platform but cannot guarantee continuous, uninterrupted accessibility. Maintenance windows, technical faults or adjustments to third-party interfaces may lead to temporary restrictions.

8. Liability

The Provider is liable without limitation for damage resulting from injury to life, body or health and for damage caused by intent or gross negligence. In cases of slight negligence, the Provider is liable only for the breach of essential contractual obligations (cardinal obligations), and then only up to the amount of the foreseeable damage typical for this type of contract.

Otherwise, liability is excluded to the extent permitted by law. Liability under the German Product Liability Act (Produkthaftungsgesetz) remains unaffected.

Note on legal form: The Provider is an Unternehmergesellschaft (haftungsbeschränkt), a German limited liability entrepreneurial company, with its registered office in Oeversee, entered in the commercial register of the Amtsgericht Flensburg (Flensburg Local Court) under HRB 18391 FL. The company is liable with its company assets.

9. Data protection and AI system

The provisions of the Privacy Policy apply. When the Platform is used at school, the school is the controller under data protection law; the Provider acts as processor on the basis of a separate data processing agreement (DPA). The learning assistant Mazio is an AI system within the meaning of Regulation (EU) 2024/1689; the Provider is its provider, and schools that use MatheZeit are deployers. The Provider makes information available to schools on how the system works and how it is classified.

10. Termination

Teachers can terminate their access themselves at any time. Schools can terminate use in accordance with the provisions of the DPA. Upon termination, personal data is deleted or anonymised in accordance with the Privacy Policy.

11. Changes to these Terms of Use

The Provider may amend these Terms of Use where this is necessary for legal, security or educational reasons. Material changes will be announced with reasonable notice. The current version can be viewed at this URL.

12. Final provisions

12.1 Applicable law

The law of the Federal Republic of Germany applies, excluding the UN Convention on Contracts for the International Sale of Goods. Mandatory consumer protection provisions of the state in which the user has their habitual residence remain unaffected.

12.2 Place of jurisdiction

If the user is a merchant, a legal entity under public law or a special fund under public law, the place of jurisdiction is the registered office of the Provider.

12.3 Severability clause

Should any provision of these Terms of Use be or become invalid or unenforceable, the validity of the remaining provisions remains unaffected. The invalid provision shall be replaced by a provision that comes closest to the economic purpose of the invalid provision.