It depends on the client’s business requirements. Functionalities and level of complexities also play major roles in this case. The cost for apps with basic features can start somewhere between $10,000 and $50,000.  But it may be higher in the case of fully custom, feature-rich mobile apps because of their eye-catching design, superior development, and clever marketing. Besides, while developing an iPhone and Android app, if you select cross-platform development like Flutter, React Native, Xamarin, Adobe PhoneGap, and Ionic, one single team of specialists will create your application for both platforms iPhone and Android. On the other hand, if you choose native development, you will need two separate teams, one for iPhone and another one for Android. Our experienced mobile app consultant will be able to guide you to make the best choice based on your business requirements.