Hi there
I have gone through given detail specification As you mention you need to build a Car Repair Mobile App in Android, iPhone & Webservice.
Experience: We have 3+ years of experience in Android, iPhone app development, Java, C++, Cocoa-C, Objective-C, Native app, Hybrid app, HTML5 and 5+ years of experience of web development in PHP, Json, Magento, UI/UX design, C#, Agile Development.
Waiting for more information.
Thank you
mage