King of App - 2026 Pricing, Features, Reviews & Alternatives

King of App is an app development and customer engagement system that offers SMBs a freemium and open source platform from which to create customizable smartphone applications. Incorporating a built-in template catalog, predefined modules and customer engagement services such as push notifications, King of App aims to provide developers, designers and agencies with an easier and more convenient way to generate apps.

From the King of App dashboard, users can create, edit and organize their folders and applications. On creating a new app, users can first choose the languages and select the theme of the application before customizing it. In order to personalize each app, King of App allows users to change the background, fonts and colors as well as add items such as images and logos. King of App also equips users with the tools to customize their app’s navigation system by allowing users to combine different types of menus and create submenus.

Once the app design is set, users can then configure the modules and determine the app’s functionality. King of App has over 20 inbuilt modules including those which enable social networking and others which manage contact information, web content and videos. Besides app modules, users can also utilize King of App services like secure logins, push notifications and in-app messages to generate customer engagement. Since King of App operates as an open source CMS, users can customize any element of their app at any time.