The first and foremost step in developing an on-demand delivery app like Postmates to conduct market research. Find your competitors and look into their services to get an idea of the market. Analyze the customers’ expectations and requirements to get a perspective of the current market prospects. I would suggest you get your Postmates clone script developed from a professional app development company.
Look for their track record and user feedback on the internet. Go through their client testimonials to learn about their work. Discuss your business requirements and goals with your team for better results. Although the market is overloaded with service providers, its complete potential hasn't been explored yet.
As you are venturing into this profitable space, your app should stand out from the crowd by providing unique services. Your Unique Value Proposition (USP) will give a reason for users to choose your services over others in the market. It would be better if you go with a white-labelled clone script as it will be preloaded with essential features and will be available at an affordable price. Discuss with your Postmates like app development team to integrate exclusive features into your app as the white-labelled scripts will provide unlimited customization options.