Flutter is the future of mobile app development. Flutter is Google's new open source technology for creating native Android and iOS apps with a single codebase. Flutter is not a framework; it's a complete SDK - software development kit - which already contains everything you will need to build cross-platform applications. This includes a rendering engine, ready-made widgets, testing and integration APIs, and command-line tools.

Flutter follows the reactive development architecture, but with a twist. The main thing to know about reactive programming is that it updates UI contents automatically when you update the variables in the code. React Native also follows this principle, but it uses the JavaScript bridge to access OEM widgets. But since the app has to pass the bridge to access widgets each time, it causes performance issues. Flutter, however, omits this bridge altogether and communicates with the native platform using Dart.

Dart is a modern object-oriented language that will remind you of Java or C++ with its syntax. It supports both strong and weak typing styles making it easy to pick up for beginners.

Android apps can be written in any language and can run on Java machine (JVM). Kotlin is one such, JVM compatible programming language that compiles down to Java bytecode and has really caught the attention of Android Community. Kotlin was actually created to be better than Java in every possible way.

With Google itself becoming Kotlin-oriented, major developers are moving towards adopting it, and since many Java apps are now being rewritten in Kotlin, it is viewed as a future of building Android apps.

The key benefits of adopting Kotlin

• Kotlin offers Brevity
• It is Open Source
• It is a Mature Language with a Great IDE support
• It provides an Easier Way to Develop Android Apps
• It is a Swift Language for Android App Development
• It is Reliable Due to its Evolutionary PRocess
• It is much safer than Java
• It is easy to learn