Smart-Onsite Application is made with a motto to provide the best services to people who are having complaints regarding various day-to-day issues. This system will not only work for people but will track each and every action taken by a service person/salesperson.Here Priority wise all kinds of complaints gets resolved which results into decrement in Service delays. SmartOnSite is developed with advanced technology features to make the service and complaint management easier for onsite engineers or field service workers. The web application is helping the supervisors to register and assign the complaints to field engineers while the onsite field technicians can use a mobile application that enables them to accept the requests and work on them. The journey from travel to onsite work is logged in the application, that makes the job of supervisor easy to solve customer complaints.