Terms of Use

1. Scope

These Terms of Use govern the use of the learning app “Hurra Mathe” and the website hurra-mathe.de, operated by SLT-Software, Bauer & Schmid GbR, Mittelfeldstraße 29, 70806 Kornwestheim, Germany (“we”). They apply to all accounts, including the free Free plan and demo mode. Our General Terms and Conditions (GTC) additionally apply to paid plans and add-on packs; in case of conflict the GTC prevail. Our Privacy Policy explains how we process personal data.

2. Accounts and registration

A user account is required for use with synchronisation across devices. Parent or teacher accounts may only be created by adults. Registration requires truthful information and confirmation of a valid e-mail address.

• Access data must be kept secret and protected against access by third parties.
• Each account is personal and may not be passed on, sold or shared with third parties; this does not apply to the management of assigned child accounts by the parent or teacher account.
• If misuse is suspected, change the password immediately and notify us at info@slt.de.

Demo mode can be used without an account. Progress is stored only locally in the browser and deleted automatically after 7 days without use.

3. Parent, teacher and child accounts; consent

Hurra Mathe is aimed at primary school children. Child accounts are created or invited and managed by a parent or teacher account. If a child registers on their own, full use is only possible after consent by a person with parental responsibility; until then only a restricted demo mode without purchases or invitations is available.

• Anyone who creates a child account or invites a child confirms that they hold parental responsibility or – as a teacher or school – have the required consent of the persons with parental responsibility or another legal basis.
• The managing account is responsible for the use by the assigned children and can edit, replace or delete child accounts at any time.
• Child accounts cannot make purchases or conclude paid contracts; purchases are only possible via the parent or teacher account.
• The number of child accounts depends on the booked plan.

Children under 16 cannot consent to the processing of their data themselves (Art. 8 GDPR in conjunction with German law); consent is given by the persons with parental responsibility. If a child registers themselves, we send a confirmation request to the e-mail address of a parent (double opt-in); the account is only fully activated after this confirmation. The confirmation request is valid for 14 days. If a parent declines or the request is not confirmed within 14 days, we delete the child account with all its data. As proof we only keep the outcome, the timestamps and pseudonymised data (check value of the parent’s e-mail address and, for a refusal, of the IP address) – without the plain e-mail address and without the child’s name – and delete this proof at the end of the third calendar year following the event. Use by schools in class is only offered through a separate school solution on request (see “Hurra Mathe for schools”).

4. Permitted use

The app may only be used for private learning purposes or – by teachers and schools – for teaching and supporting their own learning groups. In particular, it is prohibited:

• to copy, distribute, make publicly available or commercially exploit the app or its content unless expressly provided for (e.g. printing certificates, tests and reports for one’s own teaching);
• to circumvent or manipulate security mechanisms, plan or time limits or the single-device session;
• to carry out automated access (e.g. bots, scrapers), load tests or attacks on the infrastructure or to introduce malicious code;
• to use false identities or other people’s accounts or to create child accounts without authorisation;
• to enter unlawful, offensive or child-inappropriate content or unnecessary personal data in free-text fields (e.g. names of groups, learning profiles or training plans, e-mail templates).

5. Single-device session

To protect against account sharing and for security reasons, an account can only be signed in on one device at a time; several tabs in the same browser are possible. While a session is active on one device, signing in on another device is refused. After signing out or a few minutes of inactivity, the account is released again. For this purpose we process device and session identifiers (see Privacy Policy). Child accounts are separate accounts and can be used independently of the managing account.

6. Content and rights

All content of the app and the website – in particular software, exercises, learning paths, texts, graphics, characters, medals and certificates – is protected by copyright or other rights and belongs to us or our licensors. For the duration of use, we grant users a simple, non-transferable and non-sublicensable right to use the app as intended within the scope of these Terms of Use and the respective plan.

Content entered by users themselves (e.g. names, custom learning profiles, training plans, e-mail templates) remains theirs. Users grant us only the rights required to provide the app (storage, synchronisation, display and – for shared templates – display to the recipients). Anyone who shares templates with others confirms that they are entitled to do so.

7. Suspension

We may temporarily suspend an account or restrict access if there are concrete indications of a breach of these Terms of Use or of statutory provisions, in particular in cases of misuse, security risks or a risk to children. When choosing the measure, we take the user’s legitimate interests into account, in particular whether they are at fault. Where reasonable, we inform the user in advance and give them the opportunity to respond. In the event of serious or repeated breaches, we may terminate the user relationship and – in accordance with the GTC – a subscription for good cause without notice.

If we justifiably suspend an account because of a culpable breach of these Terms of Use by the user, fees already paid for the current billing period are not refunded. The user remains free to prove that no damage or significantly less damage has occurred.

8. Termination and deletion of the account

Users can delete their account at any time in the app (user profile → delete account); deletion is confirmed with a code sent by e-mail. An ongoing paid subscription must be cancelled first: deletion is only possible once there is no active subscription that has not been cancelled. Deleting a parent or teacher account also deletes the assigned child accounts and their learning data.

After the account has been switched to the Free plan (e.g. through cancellation or downgrade), only the scope of the Free plan (currently one child account) is available. If at that time the customer’s profile contains more child accounts than the Free plan allows, the excess child accounts and their learning data are blocked from use (“frozen”) but not deleted immediately. The customer can choose in the parent or teacher account which account remains active. The frozen accounts and data remain stored for a period of at least 12 months so that they can be restored upon a renewed upgrade. After 12 months of inactivity, the provider is entitled to permanently delete this frozen data; the customer will be informed of this in advance by e-mail.

Free accounts that have been completely inactive for 24 months (no sign-in) are deleted automatically; we inform the user by e-mail four weeks beforehand, and signing in during this time prevents the deletion. Accounts with a paid or ongoing subscription are not deleted for inactivity. Statutory retention obligations (e.g. for invoice and payment data) remain unaffected. Records of the conclusion of contracts, cancellations and consents given are kept after an account has been deleted until 31 December of the third year following the deletion (§§ 195, 199 BGB); until then they are restricted. We may terminate free accounts with four weeks’ notice.

9. Liability for free use

For free use (Free plan, demo mode), we are only liable for intent and gross negligence, for injury to life, body or health, under the Product Liability Act and for fraudulently concealed defects. For paid plans, the liability provisions of the GTC apply. The operators of external websites to which we link are solely responsible for their content.

10. Changes to these Terms of Use

We may change these Terms of Use for the future if there is a valid reason (e.g. new functions, changes in law, security requirements). We inform registered users in good time in advance by e-mail or in the app. Material changes only take effect with consent; anyone who does not agree can delete their account at any time. For paid subscriptions, the change rules of the GTC apply in addition.

11. Final provisions

German law 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. The German version is authoritative. Contact: info@slt.de.

Version: 21 September 2026 (version 2026-09-22, draft)