You may wonder why TopSoftDE uses QuickAppNinja to create the Quiz games. Using QuickAppNinja has many benefits. First, it gives a good template for Quiz games and saves us time. And second, we can focus on searching for unlicensed pictures and have more time to perfect the games.
Click on the symbol to check all right owners of the pictures used in the quiz games. The /apps page will be opened. Then click on the icon of the app of which you want to get information about the picture rights owners. All apps are made by using creative-commons-licensed pictures. The author's names are mentioned on these pages.