Flutter is an open source mobile app development kit from Google. It works with the existing code and is an excellent SDK (Software Development Kit) to develop iOS and Android programs. It is cost effective and eases the complexity of developing iOS and Android apps. It is primarily used for creating an application in Google Fuchsia.
The main advantage of Flutter is that a lot of code can be shared between platforms. Without writing platform-specific code, the developers can use it to develop applications for Android and iOS alike. Being an Open source SDK, it makes every application look like a native one.
It is the best Software to develop cross-platform applications. Its high performance and effective code help in building applications for iOS and Android from a single code base.