Just to add that you cant write write native ui code in android with c++. The NDK is used for games and 3d applications or to access libraries that are coded i

Just to add that you cant write write native ui code in android with c++. The NDK is used for games and 3d applications or to access libraries that are coded in c++ already. Another question is will you also have to make your app availalable to blackberry or other devices such as an ipad. If so then phonegap rhomobile appcelarator and sencha touch, jqeury mobile yada yada yada might work best because theyre focus really is one having one codebase be able to be used on multiple platforms. If you only have to target the iphone and android and you have a mac and want to learn how to code each then just go native. Ive played around with android myself so i understand why that would be needed as opposed to using html5. But if you havent done that then it wont make sense. Oh good luck to you in your endeavor. Building mobile apps are fun but a pain in the ass right now because of all the fragmentation.