As you have selected a location with the biggest talent pool hence you will get a wide range of options with a great margin in the cost to develop the postpe app. The cost may vary based on the skills, knowledge, and years of experience. But an average cost to hire a postpe app developer in India may range between $20-$150 per hour. Now, it completely depends on your choice and the complexities of your app which will determine the type of developer requirement and hence the cost too.