SWIFTSPEED APPCREATOR is open source Appmaker that provides you the needed tools to create powerful Web, Android and Ios Application, Monetize them and get paid, all for free!!
This App Builder allow you to make Android and IOS Application on the go, convert your website, store, blog, website, and many more into an application.
If your looking for a solution to make apps for your clients, or you want to make apps for fun, this software gives you the tools to mess around and eventually guide you through till you become expert yourself.
You have range of options to choose from, you can make applications for your clients, or yourself. Example of application that you can build includes
Quiz or CBT application
Web Application with link integration
Integrating your WordPress website
Making an E-commerce/Woo-commerce store
Texts and Html5 apps
why don't you give it a try?