Apps for the construction site

We provide advanced mobile applications that are especially designed for the construction industry. You get everything from a single source, affordable for every business, ready to go.


for time recording and more


for defect management


for fleet management


Everything the construction industry needs

Digital and mobile solutions for construction sites, from time tracking and automated construction reports, to scheduling, defect management and smart fleet management. Simply build smarter.

Your added value:

An integrated system – even offline

Automatic data transfer from mobile devices on construction sites to the office – even without a network connection.

Minimize errors

No more inaccurate information due to incorrect or missing time sheets. And no more sleepless nights either!

See all information in real time

Check the progress of your projects from anywhere, track all activities, snap photos from your construction site. Welcome to the future!

Developed by a contractor

We know exactly what the construction industry needs. With 123onsite you can manage your entire construction site from start to finish – without data loss and saving a maximum amount of time and money. From construction experts, for construction experts.

The paperless office – without compromise, from just €4.90/month

This is just a brief example of our features. Imagine what else you can do with it ... This is the future of construction software.

Apps for construction companies – how do I benefit from 123onsite

It's simple: our intuitive apps streamline your data-collection process, keep your team motivated, provide a project overview at all times and enable you to check your costs afterwards. We make your life easier – and save you time and money in the process.

Individual & flexible


Create your individual app package with the features you need. You always remain flexible because everything can be canceled on a monthly basis.

Safety first


You don't need to worry about updates and data security – we take care of this for you via our servers.

Getting started is so easy


Our apps are self-explanatory for you and your employees. And you don't need any additional equipment, so you can get started right away!

Front runner – 123onsite in numbers

satisfied customers
daily users
hours logged
photos taken

Make your phone as versatile as a Swiss Army knife

Record time and activity from anywhere, with just a tap of your finger. Make all construction processes fully transparent. It's easy as one, two, three.

All this is only one download away ...

You can download our 123onsite app here. It is fully compatible with the 123onsite system back at your office.

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 our 123onsite solutions, we are happy to advise you in person. Just fill out our contact form and we will get back to you as soon as possible.