Mängelmelder is a free Android app that allows users to report street deficiencies such as potholes, graffiti, and garbage bags. Developed by wer denkt was GmbH, this app is a comprehensive platform in cities and municipalities in Germany, including Essen, Bremen, Mannheim, Görlitz, Ulm, Witten, Konstanz, and Darmstadt. The app works by allowing users to take a photo and describe the issue, and then the position is automatically determined by GPS and the matter is forwarded directly to the responsible authority.

One of the best features of the app is that it keeps users informed about the status of the processing of their request by email. If you don't have a smartphone, you can also report the deficiencies directly on the homepage of Mängelmelder. Defectsmelder.de checks whether the issue is serious and forwards it to the appropriate municipality so that processing can be initiated. The app is easy to navigate and use, making it a great tool for anyone who wants to help improve their community.