I have just started using Android! and i am trying to make and sell struc application. If anyone interested he can join me. Plus i am writing a book on ETABS (2nd version actually) with full solved examples, checklists and explanation, and a software for windows WS Structural Tools...I will include all my VB/VBA developed tools in it...but this time i want to step in the market...the price range would be (just wild guess) i think 20$ to 35$ for windows based software and book each and about 2-3$ for android apps.