Team Sdui - HTGF Start-up Investment


Sdui is the digital platform for secure communication and organisation in schools. With the web-based app, students, teachers and parents can interact with each other easier than ever before: Any important information around school life, such as timetables, parent letters and announcements can be communicated easily via the app. The development of Sdui began for a school project in 2015, 2018 the Sdui GmbH has officially been founded. Currently, the company employs around 30 people and has reached many hundreds of schools. The app has been awarded several times and is used as GDPR-compliant standard for school communication by cities and communities all across Germany.

Press releases

6. February 2020

High-Tech Gründerfonds invests in Sdui – The school app extends its seed financing to around two million euros

The school app Sdui extends its seed financing. The potential of the central communication platform, on which teachers, students and parents can exchange information in a GDPR-compliant manner, convinced High-Tech Gründerfonds (HTGF) and business angels Martin Ostermayer and Dirk Freise (,, among others) to join the seed round as new lead investors. The Investitions- und Strukturbank Rheinland-Pfalz (ISB) as well as Udo Schloemer, founder and CEO of Factory Berlin, have also

Info & Contact

+49 261 13490810


Universitätsstr. 3
56070 Koblenz

In portfolio

19. Dec 2019

HTGF Manager

Dr. Maurice Kügler, Investment Manager