If you have to pick one, in most cases it'd be web. Mobile devices have web browsers but web devices don't have mobile browsers. 9 times out of 10, if your ap

If you have to pick one, in most cases it'd be web. Mobile devices have web browsers but web devices don't have mobile browsers. 9 times out of 10, if your application doesn't have any advantages on a mobile device (location services, camera services, attachments like square) then there is no point of releasing an app at all- just make a mobile-in-mind web site.