Customer is king!With the YouDo App you can rate shops, restaurants and stores by using your Android phone. In a short questionnaire you can express your satisfaction or dissatisfaction, so the stores have a customer feedback. Using this feedback, the store can respond accordingly and provide you with a better service. To participate, download the YouDo App and enter the access code which you received at the store. Registration is not necessary. What we guarantee you:As market researchers we do not advertise and sell anything. Compliance of the strict German privacy regulations is essential for us. The YouDo App is a research instrument of the tele-Research GmbH which has been located in Mannheim since 1986.