My company want to develop some phone or pad apps in the future project.
But need to choose a platform to invest.
This platform should be easily to integrated with NETMF devices.
Android devices or IPAD(iphone) ?
Investigate MonoTouch.
MonoTouch is fantastic, but you will need a Mac PC of some kind to use the dev tools and to deploy.
The version for Android only requires a PC.
Information about both can be found at http://xamarin.com/
iPad & Android Phone. Search around and you can find all kinds of stats regarding current actual sales numbers. My company is in this industry and these are the two platforms we currently recommend that our customers target first in order to activate the most users. As far as NETMF goes…they both have Bluetooth & WiFi so that shouldn’t really be an issue.