20m€ are peanuts for this. These government contracts normally takes ages, explode in cost and never really work in the end. I'm glad to see that we have experts in germany that can in just 6 weeks develop such an app for just 20m€. I don't get why people think it's too much. It sounds large but we're not talking about your everyday startup here, that is half-assing their product for 2 years and have tons of bugs in it. This app seems solid and usable for 80m people