What are some alternatives?
GoNative.io - Convert your existing web application into native Android and iOS
Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.
Website 2 APK Builder - Convert your HTML, CSS, JS and all other web content into an Android App within seconds.
Bubble - Don't hire engineers! Bubble let's you build an app entirely visually
Mobiloud - Mobiloud makes it easy to build native mobile apps for WordPress blogs and news sites.
Fastnative - Convert your website into a native app, easily.