Meldoo - Mängelmelder is a free Android app developed by leanact GmbH. It falls under the category of Travel & Navigation and offers a convenient way for users to report issues in their community. The program's name itself suggests its purpose - "nicht meckern. melden!" (Don't complain, report!).

The app allows users to easily report issues such as potholes, storm damage, and faulty lighting to the relevant authorities. The app also now allows users to report oak processionary moth nests. Users can include GPS data, photos, and a description of the issue in their report. Once submitted, the report is sent directly to the responsible authority. Users can track the status of their report and communicate with the employees of the relevant authority in case of any queries.

Meldoo can be used throughout Germany. However, in case of emergencies that pose a threat to people, animals, or the environment, users are advised to contact the emergency services directly.

Overall, Meldoo - Mängelmelder is a useful app that allows users to play an active role in improving their community.