Roiko — Terms of Service

1. Who we are; scope of these Terms

1.1 These Terms of Service ("Terms") govern the use of the Roiko software-as-a-service ("Roiko", "the Service"), operated by Rodrigo Alonso Corona Davila, Zillertalstraße 41, 81379 München, Germany ("we", "us"). Full provider identification: see our Legal Notice (Impressum).

1.2 By creating an account, ticking the acceptance checkbox, or using the Service, you agree to these Terms and to the Privacy Policy (https://roiko.ai/privacy).

2. Business customers

2.1 Paid subscription plans are offered exclusively to entrepreneurs within the meaning of § 14 BGB (businesses, freelancers, and self-employed professionals acting in the exercise of their trade or profession) and to public bodies. When ordering a paid plan you confirm that you are acting as an entrepreneur and not as a consumer.

2.2 The free Sandbox tier may be used by individuals (including students and researchers) for evaluation and learning.

3. The Service — an engineering tool, not an engineer

3.1 Roiko is a software tool that performs structural analysis and design calculations according to the methods and standards stated in the product documentation (including the Eurocodes and selected National Annexes). Roiko does not provide engineering, architectural, or consulting services. No engineer–client or other professional relationship is created by your use of the Service.

3.2 Independent verification is mandatory. The Service is intended for use by qualified professionals. All inputs, results, models, reports, and other outputs must be independently reviewed, verified, and approved by a qualified engineer — where required by the applicable jurisdiction, a licensed or chartered engineer — who assumes full professional responsibility before any output is used in the design, assessment, or construction of a real structure.

3.3 You are responsible for the correctness and completeness of your inputs, for the selection of the applicable design standard, National Annex, and design parameters, and for confirming that the implemented code scope is applicable to your project and jurisdiction.

3.4 AI-assisted features generate suggestions that may be incorrect or incomplete. AI-generated content is marked as such in the product. Suggestions are subject to the same verification duty as every other output (§ 3.2).

4. Account, acceptable use

4.1 You must provide accurate registration information and keep your credentials secure. Accounts are personal to the registered user or, for team plans, the invited seat holders.

4.2 You must not: reverse engineer the Service except where mandatory law permits; resell or sublicense access; probe or disrupt the Service's security; use the Service to violate applicable law; or exceed usage limits of your plan by technical circumvention.

5. Sanctions and export control

5.1 The Service must not be accessed or used from, or for the benefit of any person in, a jurisdiction subject to comprehensive EU or UN sanctions, including Russia, Belarus, Iran, North Korea, Syria, Cuba, and the temporarily occupied territories of Ukraine. EU Regulation 833/2014 Art. 5n specifically prohibits the provision of engineering and industrial design software, including via cloud, to entities established in Russia.

5.2 You warrant that you are not located in, ordinarily resident in, or acting on behalf of a person in any such jurisdiction, and are not a sanctioned or listed party. We may suspend or terminate access immediately where required by sanctions law.

6. Intellectual property

6.1 All rights in the Service, its source code, underlying models, section and material catalogues, and user interface remain with us. You receive a non-exclusive, non-transferable right to use the Service for the duration of your subscription in accordance with these Terms.

6.2 Your results are yours. The work products you create with the Service (models, drawings, reports, material take-offs) belong to you. We claim no intellectual property in your projects.

7. Data use and AI training

7.1 Paid plans: we do not use your project data or models to train our AI models, unless you expressly opt in via the corresponding setting in the product.

7.2 Free Sandbox tier: in exchange for free access, you grant us a non-exclusive, worldwide right to use your inputs, structural data, and generated outputs to improve, train, and develop the Service and its models. Free-text content — in particular the text of your requests to the AI assistant — is used as you entered it and is not anonymized. Do not include personal data or confidential information in free-tier projects or requests. You warrant that you are entitled to make the data available for this purpose (e.g. no breach of confidentiality obligations).

8. Subscription, term, termination; switching

8.1 Subscriptions renew automatically for the chosen billing period until cancelled. Cancellation takes effect at the end of the current billing period. Prices, tiers, and seat mechanics are shown at checkout and in the product.

8.2 We may change these Terms with effect for the future. For material changes we will notify you and require renewed acceptance in the product.

8.3 Switching and exit. You may terminate in accordance with these Terms and retrieve your exportable data (projects, models, reports) in a commonly used, machine-readable format free of charge. We will provide reasonable assistance with the transition to another service or to on-premises infrastructure.

9. Warranty and liability

9.1 We provide the Service with reasonable skill and care. Statutory warranty rights for defects apply; we do not warrant that calculations are suitable for any particular project without independent verification (§ 3).

9.2 We are liable without limitation for intent and gross negligence, for injury to life, body, or health, under the German Product Liability Act (Produkthaftungsgesetz), and for fraudulently concealed defects.

9.3 For slight negligence we are liable only for breach of essential contractual obligations — obligations whose fulfilment makes the proper performance of this contract possible in the first place and on whose fulfilment you regularly rely — and in that case liability is limited to the foreseeable damage typical for this type of contract.

9.4 Subject to §§ 9.2–9.3, our aggregate liability per contract year is limited to the fees you paid for the Service in the twelve months preceding the event giving rise to the claim, and liability for indirect and consequential damages, lost profit, and loss of data is excluded.

10. Governing law; jurisdiction

10.1 German law applies, excluding the CISG. If you are a consumer, this choice of law does not deprive you of the protection of mandatory provisions of the law of your habitual residence.

10.2 For entrepreneurs, the exclusive place of jurisdiction is Munich, Germany.