The project is for merchant & user, here the merchant can add their products, coupons from the app. The products would be purchased bh the user and here he could use the coupons provided by the merchant. 

The app is for Racer where they need to wear a device on there helmet and run on a race track, here we track the time for every lap that has been taken by the racer. 

The application is for the customer and service provider. Here the customer could search for the saloon near by him for hare cut, masaze etc. Here Service provider can also create different types of services which they provide in their saloon.