Hello Client,
We do not charge Upfront Payment to start work and Ready to sign NDA.
I read your requirements you are looking to work on existing app on Phonegap. I have sound experience in application development. I have developed more than 7 apps.
My team have been developed many apps for different domains like Taxi booking, ecommerce & social app with testing.
We have 50+ professional expertises in IOS, Android, WordPress, Joomla, Codeigniter PHP, .NET, Ajax, HTML5.
We have sound knowledge on different domain like HR, social networking, E-commerce, Health care, Finance. We focus develop high quality app with latest coding standards and completion of work within deadlines.
Waiting for your kind & positive reply and looking forward to work with you.
Best Regards
Rahul Rao