Series of Concept Cards have been added to https://help.AppyBuilder.com/concept-cards.html.
THANK YOU @Peter_Mathijssen for your contribution and awesome cards
They are now also available as a Google Document
@Peter_Mathijssen Thanks. Also, available here:
AppyBuilder award to @Peter_Mathijssen for his amazing graphics, contributions and help. THANKS
@Peter_Mathijssen you really deserve this!!! Congrats!!!