This study has been undertaken to indicate the benefits of using flutter over other app development platforms. It consists of working of different platforms and their role in application development. In today's world ease of development is the thing all developers are looking for and flutter has come up with the required platform to support development of applications for both Android and iOS. Developers are enforced to either construct the same application numerous times for various OS (operating systems) or accept a low-quality similar solution that trades native speed and accuracy for portability. Flutter is an open-source SDK for developing high-performance and more reliable mobile applications for operating systems like iOS and Android.