DB Bauarbeiten is a free Android app developed by Deutsche Bahn that keeps you informed about train schedule changes due to construction work. By subscribing to specific lines or routes, you will automatically receive notifications on your smartphone whenever new updates or changes are made.

The app allows you to filter notifications by specific time periods and/or sections of routes. Additionally, you can save the dates of schedule changes directly to your mobile calendar. If you want to inform your friends, colleagues, or family about schedule changes, you can share the notifications via Facebook or WhatsApp.

Overall, DB Bauarbeiten is a useful app for anyone who frequently travels by train and wants to stay ahead of schedule changes caused by construction work.