How much it cost to make mobile application?

I'm new in Mobile application development. I have a few clients who are asking about price but I have no Idea How much I need to charge. Anyone please tell me how much I need to charge for Iphone, Ipad, Android, Nokia and other Mobile Application?

Depends on intensity of application, certainly they shouldn't cost the same, you've to consider your time you'll be putting to make the application and effort, this how you should determine the price of an application.