ℹ️ This is a non-binding English translation provided for convenience. The legally binding version is the German one: Deutsche Fassung.

Terms and Conditions

also serving as the Terms of Use · Version 2026-06-20

These Terms and Conditions govern the use of the gruenki service and replace the previous "Terms of Use".

1. Scope and Contracting Parties

1.1 These Terms and Conditions apply to the use of the web application and all functions of the "gruenki" service (hereinafter "Service") between the provider and the using person or organisation (hereinafter "User", "you").

1.2 The provider and contracting party is Marius Erdmann (kontiTec), Brunnenstraße 1a, 56459 Langenhahn, Germany (hereinafter "Provider"). Full details: Legal Notice.

1.3 These Terms and Conditions apply in the version valid at the time the contract is concluded. Any deviating or conflicting terms of the User are objected to; they only become part of the contract through the Provider's express written confirmation.

1.4 A consumer is any natural person who concludes the contract for purposes that are predominantly outside their commercial or self-employed professional activity (Section 13 of the German Civil Code, BGB). An entrepreneur is any person who acts in the exercise of a commercial or self-employed professional activity (Section 14 BGB); associations, foundations, corporations and other organisations are treated as equivalent. Consumer-protection provisions (in particular the right of withdrawal) apply only to consumers.

2. Description of Services

2.1 gruenki is an AI-supported chat assistant. Its functionality includes in particular: dialogue-based chat, a persistent memory across conversations, reminders and to-dos, the analysis of uploaded documents and images, the creation of files, as well as an optional web research feature (simple web search and deep search) via an external search service.

2.2 The responses are generated automatically and non-deterministically by an AI language model. Identical inputs may lead to different outputs. No specific result, specific property or consistent output is owed.

2.3 The Provider may further develop the Service and change, supplement or discontinue functions where there is a valid reason for doing so (e.g. technical development, IT security, changed legal situation or economic viability), provided this is reasonable for the User and the core contractual benefit is preserved. Material restrictions of paid functions will be announced with reasonable notice; if a legitimate interest of the User opposes them, the User may terminate the contract effective as of when the change takes effect.

2.4 The scope of functions and use depends on the chosen plan (see Section 7).

3. Nature of the AI Outputs; No Advice

3.1 The content generated by the Service may be incorrect, incomplete, outdated, misleading or inappropriate for the individual case. AI systems may invent or incorrectly reproduce facts, sources, figures, deadlines, names or legal information ("hallucinations"). No warranty is given for accuracy, completeness, timeliness, fidelity to sources or fitness for a particular purpose.

3.2 The outputs in particular do not constitute legal, tax, medical, financial or other professional advice and do not replace such advice. They do not establish any mandate, treatment or advisory relationship. They must be reviewed on your own responsibility before any use; for binding information, the competent authorities (e.g. tax office, public authority, lawyer, tax adviser, physician) or the relevant original sources must be consulted.

3.3 Results of the web/research function originate from external search providers and third-party sources; the Provider does not adopt their content as its own and warrants neither its accuracy nor its constant availability.

3.4 The User makes no decisions with legal or comparably significant effect solely on the basis of the outputs without reviewing them.

4. Conclusion of Contract and Registration

4.1 Use requires the setup of an account. By submitting the registration, the User makes an offer to conclude a usage contract; the contract is concluded upon activation of the account by the Provider. For free use (the "Free" plan), a non-paid usage relationship arises.

4.2 Switching to a paid plan takes place through a separate order within the Service; the paid contract is concluded upon confirmation of the order. Before a paid order is placed, the essential characteristics, the total price and the contract term are displayed; the order button is labelled in accordance with Section 312j BGB.

4.3 The information provided during registration must be accurate and complete. Access credentials must be kept confidential and protected against access by third parties.

4.4 Minimum age: By registering, the User confirms that they are at least 18 years old, or at least 16 years old and have the consent of the persons with parental authority. Paid plans require legal majority (18 years); in the case of minors, the Provider may make the conclusion of a paid contract conditional on demonstrable consent of the legal representatives.

5. Accounts for Organisations and Teams

5.1 The Service may offer shared workspaces for organisations/teams. Anyone who creates or manages such a workspace (owner/administrator) warrants that they are authorised to represent the organisation; in this case, the contracting party for a paid plan is the organisation.

5.2 The owner/administrator manages members, roles and shared content (e.g. shared templates) and is responsible for the lawful inclusion of members. Within a shared workspace, authorised members may access jointly provided content; private content of the individual members remains separate.

6. User Obligations and Prohibited Use

6.1 The User undertakes not to use the Service abusively or unlawfully. In particular, the following is prohibited:

6.2 The User warrants that they hold the necessary rights to all content they enter or upload.

7. Plans, Prices and Payment

7.1 The Service is offered in several plans (e.g. Free, Plus, Premium, Team). The plans provide the same model quality and the same core functions; they differ in their usage allowance. The respectively applicable services and prices are set out in the pricing overview within the Service at the time of the order.

7.2 Paid plans are – unless stated otherwise – billed in advance for the respective billing period (monthly). Prices are final prices; pursuant to Section 19 of the German VAT Act (small-business regulation), no value-added tax is shown and it cannot be claimed by the User as input tax.

7.3 Payment processing for paid plans is handled via a payment service provider. The contracting party for the payment, the accepted means of payment and the due date are clearly displayed in the ordering process before a paid order is concluded.

7.4 If a due fee is not settled, the Provider may suspend paid functions after an unsuccessful reasonable grace period. The statutory provisions on default remain unaffected. In the case of returned direct debits or chargebacks for which the User is responsible, the Provider may charge the reasonable costs arising as a result.

7.5 Usage allowances/fair use: If usage exceeds the allowance of the plan, the Provider may throttle the function until the next billing period or limit it temporarily. Abusive overuse or overuse that endangers operations entitles the Provider to take reasonable measures.

7.6 Price changes in continuing obligations will be announced in text form with reasonable notice (at least six weeks). In this case, the User has a special right of termination effective as of when the change takes effect; no deemed consent applies in relation to consumers.

8. Term, Termination and Suspension

8.1 The non-paid usage relationship (Free) runs for an indefinite period and may be ended by either side at any time without notice.

8.2 Paid plans may be terminated at any time effective as of the end of the current billing period. Termination is possible via an easily accessible function within the Service (termination button pursuant to Section 312k BGB). The User will receive prompt confirmation in text form of the receipt and of the time the termination takes effect.

8.3 The Provider may ordinarily terminate the contractual relationship with reasonable notice. The right to extraordinary termination and to immediate suspension for cause (e.g. significant or repeated breaches of Section 6) remains unaffected; the Provider will inform the User thereof where reasonable.

8.4 Before content is finally deleted, there is – where technically and legally possible – the option to export data. In all other respects, the privacy policy applies.

8.5 Free accounts that have not been used for more than twelve months may be closed by the Provider after prior announcement in text form with reasonable notice, and the associated data may be deleted. The option to export data beforehand is preserved.

9. Right of Withdrawal for Consumers

9.1 Consumers have a statutory right of withdrawal for paid contracts. Details, deadlines and consequences are set out in the Withdrawal Policy.

9.2 gruenki is a digital service (Section 327(2) BGB). The right of withdrawal expires prematurely if the consumer expressly agrees that performance begins before the expiry of the withdrawal period and confirms that, through this consent, they lose their right of withdrawal upon the start of performance (Section 356(5) BGB). No compensation for value is payable in this case. This consent is obtained separately during the payment process.

10. Rights to Content

10.1 The rights to your own inputs and uploads ("User Content") remain with the User. The Provider is granted only the simple, non-exclusive right of use required to provide the Service, limited to the duration of use (e.g. storage, processing, display in your own account or shared workspace).

10.2 User Content is not used to train AI models. The content is not sold and not exploited for advertising.

10.3 The Provider reserves no rights – as far as legally possible – in the outputs generated by the Service; the User may use them freely within the scope of these Terms and Conditions. No warranty is given for the freedom from third-party rights, protectability or uniqueness of the outputs; identical or similar outputs to other Users are possible.

10.4 The rights to the Service itself (software, design, the "gruenki" trademark, logos) remain with the Provider or the respective rights holders. No right beyond the use of the Service is granted.

11. Integrated Service Providers

11.1 To provide individual functions, the Provider uses carefully selected service providers (including server hosting in Germany, optional sign-in via an identity service, an optional external search/research service, a payment service provider for paid plans). The AI language model is operated on the Provider's own hardware in Germany.

11.2 The nature, purpose, involved providers and any transfers to third countries are described in the Privacy Policy. Optional functions (e.g. sign-in via an identity service, web search) are only active at the User's initiative.

11.3 Processing on behalf (Art. 28 GDPR): Insofar as the User, within the scope of a commercial, professional or organisation-related activity, enters personal data of third parties (e.g. of members, donors or clients) into the Service and the Provider processes this data on the User's behalf, the Provider acts in this respect as a processor and the User as the controller. The separate data processing agreement (DPA), which the Provider makes available to organisations and entrepreneurs on request, applies in this regard; in the event of conflicts, the DPA prevails over these Terms and Conditions. The Provider engages sub-processors (including for hosting and – at the User's initiative – web search); details as well as a procedure for being informed about and objecting to new sub-processors are governed by the DPA. As the controller, the User is responsible for the lawfulness of the third-party data they enter (legal basis, informing data subjects).

12. Availability, Maintenance, Force Majeure

12.1 The Provider endeavours to achieve high availability but does not owe any specific availability (no SLA). Maintenance, update and downtime periods as well as capacity limits are possible; in the event of temporary overload, a request may be rejected and a renewed attempt requested.

12.2 The Provider is not liable for events of force majeure (e.g. failures of upstream services, power/network disruptions, official measures); the obligation to perform is suspended for their duration.

12.3 A temporary full or partial failure of the AI function (e.g. due to maintenance, load or a disruption of the underlying computing infrastructure) or of the accessibility of the Service (e.g. due to a disruption of the Provider's internet connection) is possible and does not give rise to any claim to uninterrupted availability. The Provider will remedy disruptions that become known as quickly as reasonably possible. The User's statutory rights and liability under Section 14 remain unaffected.

12.4 Individual availability or support commitments for business customers can be agreed separately on request.

13. Data Backup and Privacy

13.1 The processing of personal data is governed by the Privacy Policy. Content is processed and stored in Germany; personal content is field-encrypted (encrypted at rest).

13.2 The User is responsible for backing up the content important to them and can export their data at any time. Liability for data loss exists only within the scope of Section 14 and only for the typical recovery effort remaining where the User has carried out proper backups.

13.3 As part of proper operations, the Provider carries out technical backups to protect against system failures. These do not replace the User's own responsibility under Section 13.2.

13.4 Where the User processes personal data of third parties using gruenki and a data processing agreement (DPA under Art. 28 GDPR) is required for this, the Provider will provide one on request. Enquiries should be sent to info@gruenki.de.

14. Liability

14.1 The Provider is liable without limitation in the case of intent and gross negligence, for injury to life, body or health, in the case of fraudulent intent, as well as under the Product Liability Act and to the extent of a guarantee assumed.

14.2 In the case of simple negligence, the Provider is liable only for breach of a material contractual obligation (cardinal obligation, the fulfilment of which makes the proper performance of the contract possible in the first place and on the observance of which the User regularly relies). In this case, liability is limited to the foreseeable damage typical for the contract.

14.3 In all other respects, liability – on whatever legal ground – is excluded.

14.4 The foregoing limitations of liability also apply for the benefit of the Provider's legal representatives and vicarious agents.

14.5 Insofar as liability is excluded or limited, this applies in particular also to damage arising from the fact that the User relied on an unverified AI output (cf. Section 3). Any mandatory statutory liability remains unaffected.

15. Indemnification

The User indemnifies the Provider against all third-party claims asserted against the Provider on account of an unlawful use of the Service by the User or on account of content entered/uploaded by the User, including reasonable costs of legal defence. This does not apply insofar as the User is not responsible for the infringement.

16. Changes to these Terms and Conditions

16.1 The Provider may amend these Terms and Conditions with effect for the future, insofar as this is necessary for a valid reason (e.g. a change in the legal situation, case law, the scope of functions or the service providers used) and the User is not thereby unreasonably disadvantaged.

16.2 Changes will be communicated in advance with reasonable notice in text form or within the Service. In the case of material changes, renewed active consent is required; no deemed consent applies in relation to consumers. If the User does not consent, either side may end the contractual relationship effective as of when the change takes effect.

17. Final Provisions

17.1 The law of the Federal Republic of Germany applies, to the exclusion of the UN Convention on Contracts for the International Sale of Goods. For consumers, this applies only insofar as the consumer is not thereby deprived of the mandatory protection of the law of their state of habitual residence (Art. 6 Rome I Regulation).

17.2 If the User is a merchant, a legal entity under public law or a special fund under public law, the exclusive place of jurisdiction is the Provider's registered office.

17.3 Notices in connection with this contract in text form (e.g. email) are sufficient. The User is permitted to set off only against undisputed claims or claims established by a final court decision. A transfer of the contract to third parties by the Provider is permitted if the User is free to terminate.

17.4 Should a provision of these Terms and Conditions be or become invalid, the validity of the remaining provisions remains unaffected; the statutory provision shall take the place of the invalid provision.

17.5 Consumer dispute resolution: The Provider is neither willing nor obliged to participate in dispute resolution proceedings before a consumer arbitration board (Section 36 VSBG).

17.6 The German version of these Terms and Conditions is authoritative.

17.7 The Service is aimed at users in Germany. Use from abroad is at your own risk and under your own responsibility for compliance with the regulations applicable there.

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