Thank you! Well, a simple four function calculator is one of the most popular type of = projects for picking up iOS development. Adding newer and newer features ju= st makes the whole lot complicated by the end. At first I thought this will= be super easy, then ended up fairly complex code. However the most difficu= lt I have found was to design it, what functions to include, how to arrange= the buttons yet to keep it relatively simple to use. And of course endless= hours of bug fixing and polishing the user experience. Now I have a differ= ent respect to calculator manufacturers like TI and HP :) To pick up iOS development the best I have found is to subscribe to one of = the free courses on iTunes U (iTunes University). You can follow lessons fr= om Stanford for example on your Mac or iPad or iPhone even. That teaches yo= u Objective C as well as the architectures and the API and a bit more. It i= s good fun :) Tamas Sent from my iPad On Apr 4, 2013, at 10:58 PM, Scott wrote: > Just downloaded and played with the app a bit. Great features for a softw= are/electrical engineer. Thank you! >=20 > How difficult was it to build? I've been interested in iOS development fo= r a while now but haven't jumped in yet.=20 >=20 > -Scott=20 > --=20 > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .