Ralf Winkelmann

The app „Simple To-Do List“ offers you an easy opportunity to write down your tasks and to-do's.

This notepad app offers you an easy opportunity to write down your thoughts and ideas. Break up your

The app „Weight Loss Tracker“ offers you an easy opportunity to track your weight and supports you o

ProgOn offers you an easy opportunity to track your progress or a change in pictures. It's perfe