Legal Notice


1. Content of the Online Offering


The contents of this website have been created with the greatest possible care.

However, no guarantee is given for the accuracy, completeness or timeliness of the information provided.


As a service provider, the operator is responsible for its own content on these pages in accordance with § 7 para. 1 of the German Telemedia Act (TMG) under general laws. According to §§ 8 to 10 TMG, however, the service provider is not obliged to monitor transmitted or stored third-party information.



2. Use of the “HOAI Calculator” App


The app presented on this website is intended to provide computational guidance and a structured presentation of fee calculations.


It does not replace individual contract review, a formally verifiable fee calculation, or legal advice.


The following always remain decisive:


• the contractual agreements between the parties

• the applicable statutory regulations

• and the relevant professional regulations applicable in each individual case


Use of the app is at the user’s own responsibility.



3. Limitation of Liability


Liability for material or non-material damages arising from the use or non-use of the information provided is generally excluded, unless it can be proven that the damage was caused intentionally or through gross negligence.



4. External Links


This website may contain links to external third-party websites.


The operator has no influence on the contents of these external sites.

Responsibility for the content of linked pages always lies with the respective provider or operator.



5. Copyright


The content and works created by the website operator on this site are subject to German copyright law.


Any reproduction, editing, distribution or other use outside the limits of copyright law requires the written consent of the respective author or creator.



6. Trademarks and Product Names


Where product names or trademarks of third parties are mentioned on this website (e.g. “iPhone”), these are registered trademarks of their respective owners.


They are used for descriptive purposes only.



7. No Guarantee for Economic Results


The results generated by the app represent non-binding calculation results.


No guarantee is given regarding economic, contractual or legal consequences resulting from the use of these calculations.




© 2026 Marcus Schellstede - SchelloLabs . Alle Rechte vorbehalten.

APPS MADE IN PETERSFEHN - GERMANY