About the Sdui Group

Since its founding in Koblenz in 2018, the Sdui Group has developed into one of the fastest growing companies for educational technologies in Europe. As a reliable partner, the EdTech provider supports educational institutions, providers and ministries with digitalisation by developing innovative operating systems for digital schools and preschools.
The aim of the platform is to use smart functions to connect teachers, educators, parents and children. The Sdui Group’s solutions reduce the amount of administrative work required, freeing up time for the organisations’ main task: providing the best possible education. To this end, the Sdui Group offers GDPR-compliant solutions with functions such as chat, translation functions, cloud, class register or AI lesson planner, which are specially tailored to the needs of schools and daycare centres. 
The Sdui Group also includes the administration and management platform PUPIL and the learning and grade management offering Additio. The company is based in Koblenz and currently employs around 230 people. It is active in more than 70 countries. Following the acquisition of FoxEducation, a total of around 22,000 educational institutions currently use Sdui Group offerings.  

The team in summer 2022
3 +

The Sdui Group’s expert team is continually growing

Educational institutions
2500 +

Schools, preschools and authorities use our digital solutions

1 +

Teachers, pupils, parents and administrative staff across the world benefit from our offerings

1 Mio. €

The Sdui Group has already received 25 million € capital from investors & capital providers

Empower humans to
transform education for a
better tomorrow.



Why does Sdui exist and why does it make sense that we do our job every day? Our purpose gives a clear answer to these questions: We empower people to transform education – for a better tomorrow.

A world in which technology
enables everyone to
benefit from the best
possible education.


We believe that the future of
learning is highly personalized,
engaging and relevant
for our every day life.



What should this better tomorrow look like? Our vision paints a picture of the educational future we would like to contribute to: A world where technology enables everyone to participate in education. Because: We believe that the future of learning is highly personalised, engaging and relevant to real life.

We build the operating system
for modern education.


We simplify communication
and organization to connect
people and to make learning
more effective and
accessible worldwide.


What are we doing every day to make our vision of the future come true? Our mission is: We build the operating system for modern education. We simplify communication and organisation to connect people and make learning more effective and accessible worldwide.

Sdui founding story

Founders Daniel Zacharias and Jan Micha Kroll came up with the idea for Sdui in 2015, when they were students at the Martin-Butzer-Gymnasium in Dierdorf: they didn’t want to hear about it only at school when lessons were cancelled. They developed a digital solution (initially called “Basic P”) for the “Jugend forscht” competition. Due to the positive response and high demand, they continued to pursue the idea of their app after graduating from secondary school. On 8 February 2018, they officially founded the Sdui GmbH in Koblenz. In May 2018, the Sdui app was implemented for the first customers. From the very beginning, Sdui’s goal has been to simplify communication and organisation in schools and daycare centres, and to use digital solutions to make a lasting change in everyday school life. Today, we express our motivation in our purpose slogan:

Jan Micha Kroll, Daniel Zacharias and Timo Stosius
The team in summer 2020

Sdui Group

To make an even bigger impact on the digitalisation of education, we unite the best solutions from schools and day care centres in Europe under the Sdui Group umbrella.

Pupil AG

The Swiss school management software PUPIL offers 45 modules as an all-in-one solution for the organisation of everyday school life.

Additio App

The Spanish Additio App is an all-in-one platform for school management, performance assessment and communication.



With SchoolFox for schools and KidsFox for daycare centres, the EdTech from Austria offers digital solutions for over 9,000 institutions.

Sdui is backed by:

among others known for Zalando and Flixbus

Investmentholding Franz Haniel & Cie.

The leading ed-tech venture capital firm in Europe

Europas #1 Seedinvestor


Dirk Freise & Martin Ostermayer

Development bank of the state of Rhineland-Palatinate

D. Nothacker, J. Köhler & N. Schefenacker

Hinderer - 2ms

Family Office JSM Hinderer GmbH


One of the world's leading providers of investment

Summiteer Logo

Venture capital fund with focus on innovative business models