What are some alternatives?
When comparing Nun Attack and appenguin, you can also consider the following products
Battleheart - Create a party of heroes and lead them in frantic real-time battles.
Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.
Battle Heroes - ttle Heroes is an addictive real-time strategy game packed with actions and intense combats.
GoNative.io - Convert your existing web application into native Android and iOS
Brutal Street - The most bloody gang war has started! A new style ARPG is coming!
Website 2 APK Builder - Convert your HTML, CSS, JS and all other web content into an Android App within seconds.