I came to know about QuickApp Ninja through Google.
My first impression was that QuickApp Ninja is not real, but my doubt was cleared when I found that many games have been built and are available on Google Play Store.
Soon I made 2 games using QuickApp Ninja.
You just need an idea and platform is already there. No need to worry about the coding.
Making the game is very easy.
I uploaded 2 games using template '4 pics in 1 word' & 'Guess the Pic'.
Try QuickApp Ninja, it's very easy. After building the game you will get the option of downloading the file in 'apk' and 'AAB' format.
Amazon App Store uses '.apk' file and Google Play Store uses 'AAB' file.
Try it and share it to others as well.