mobile app development

I am seeking a mobile app developer to develope a gps mobile application for iphone, android and blackberry. PM for for details on this project so you can properly bid on this project. All paymenst are made through Freelancer ONLY so do not ask for any payment outside of Freelancer. 33% to be out in escrow upon starting the job, 67%/final payment in full when the project is 100% completed and 100% bug free working with our web site. Project time line 30-60 days fro date of acceptance of job.