# CoronaMelder, GGD Contact & CoronaCheck

The coronavirus pandemic was the first pandemic where IT played a crucial role in fighting the virus. The Dutch Ministry of Health, Welfare and Sport developed several apps that played a key role in policy to prevent the spread. To achieve this, the ministry relied on expertise both within and outside the government, including ours.

- Public
- Health
- Mobile
- CMS
- PHP
- Open Source

**Discovery**## Taking control

During the pandemic, the ministry wanted to take matters into its own hands. Its goal: to develop technological applications with the help of specialists to combat the virus and its impact effectively.

**Design & development**## Three public apps

We collaborated on the development of three applications, including the CoronaMelder app. This app warned users and provided corresponding advice if they had been in close contact with someone who tested positive. One of our solution architects designed the technical architecture, bridging the gap between the development team and policymakers. By translating requirements into tangible solutions and visualizing complex ideas, we helped establish a common language for faster progress.

We also supported the creation of GGD Contact, an app built to assist the national contact tracing process (Bron- en Contactonderzoek). Initially developed for public use, it evolved into a complete administrative system.

Finally, we collaborated on CoronaCheck, the app that allowed citizens to show their vaccination, test, or recovery status; helping reopen society and enabling travel during the pandemic.

**Conclusion**## Security by design

All COVID-related applications were developed as open source, with privacy and security by design as guiding principles. Together, these three apps played a crucial role in the Netherlands’ response to the pandemic.

[Back to overview](/en/success-stories)  Link copied to clipboard

## View similar success stories

Public   Mobile   Open Source  

## The new KNMI app: better prepared for severe weather

KNMI aims to warn people earlier and more accurately, as extreme weather is becoming more frequent due to climate change. With the new KNMI app, citizens can stay informed and prepared for dangerous weather conditions. We worked closely with KNMI and Koos Service Design to create this app.

Health   Lifestyle   Mobile  

## CRUSE Control app

CRUSE Control is the reference self-evaluation app for chronic urticaria, built by Dawn Technology together with the Charité Institute of Allergology and the international UCARE network. Over 20,000 patients across 38 countries use the application daily to track symptoms and prepare for clinic visits. Dawn Technology integrated a reliable AI assistant into the app to safely and accurately answer patient questions based exclusively on approved medical sources.

### Digital solutions with social impact

Inspired by our contribution to public services? Discover what we can achieve for your organization and contact us.

<a id="subscribe"></a>## Curious about our latest updates?

Stay up-to-date in the digital landscape with our newsletter. Enrol and get the latest updates in your mail