There are many companies doing app in Changsha, and the technology is similar. Now the development companies on the market can basically meet the needs of customers for the opening of app. If you are not customizing native development, then your choice does not need to be limited to Changsha. If it is customized native development, I suggest you choose a local development company to help you develop. A casual search on the Internet will reveal many local development companies in Changsha. In fact, the most important thing to do customized native development is to find a good product manager. Finding a good product manager will take your app development to a big step.

If it is other development methods, then you can find some development and production companies nationwide to help you complete the development and production of app. For example, an app, Android technology and other companies are process services, from development and production to one-stop service, saving you a lot of time.