a mobile app for my oil business

My business is in need of a mobile app that is compatible both iOS and Android platforms. This will give us the ability to reach our customers on a wide range of phones and tablets. The app must have the ability for customers to place orders with ease and accuracy. As far as design or branding, I am open to suggestions that will amplify the user experience. Ultimately, this app will have to be user-friendly, aesthetically pleasing, and facilitate the process from order to delivery.