Apps for the construction site, designed with passion – because we don't know any other way

123onsite was born from an idea by a construction company owner who had been looking for a mobile time-tracking solution for his company for quite some time, but couldn’t find a suitable package – so he developed one himself!


He had the goal to develop software for construction companies that would make their work much easier. This is achieved by tracking all the construction site data by using a tool that every construction worker now carries – the smartphone. Together with a software developer, 123onsite was developed as a smart and efficient solution. Just a few years later, the app has grown tremendously, and so has the company – with consistent growth averaging 60 to 80% per year, 123onsite has now become the market leader in mobile construction site management.


In 2018 GmbH was acquired by NEVARIS Bausoftware GmbH, the technology leader for digital processes in the construction industry in Germany. What started with two highly motivated experts has developed into a modern company with a Silicon Valley atmosphere. We are passionate about developing our software and do so as an energetic and highly motivated team. With heart and soul – for your business!

About Us
About Us

Quickly find the answers you need

Our FAQs contain answers to our customers’ most frequently asked questions regarding our apps. If you would like to know more about 123onsite solutions, we would be happy to advise you in person. Just fill out our contact form and we will get back to you as soon as possible.