Grapevine is an innovative idea to create online survey by using the IOT. Replace your manual survey on a digitalization. Grapevine is a mixed-mode feedback mobile app where various surveys can be conducted and real-time questionnaire can be created. App is having an intuitive user interface and strong back-end questionnaire engine that would display questions based on the feedback received from the customer. App eliminates redundant questions and simplifying the feedback process by using digitalization.