I'm an iOS developer (freelancer) and i want to know how much cost to build an app? and how should i do to estimate the price? like this app http://www.finalcad.fr/en/index.html
closed as not a real question by Robert Harvey, maple_shaft♦ May 17 '12 at 1:26
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, see the FAQ.
Typical contractor rates are in the $75-$150 range. Other than that, it really depends on your app. Here are some common considerations:
If you can nail down some of those questions, it will give us a better idea of how to answer your question. For orders of magnitude, think of it this way: App development is a game of tens of thousands, not hundreds. Very basic apps will cost north of $1000 easily, and something as complicated as the app you link to can cost >$75,000 very easily (check out this link for the example of what it cost to develop Twitterific)