Hi ,
On-behalf of carol data technology I am submitting my proposal after reading the description for SIP app that you have provided and would like to discuss more about our project on chat .
Relevant Skills and Experience
Technology we work on :-Android, iOS and PHP , wordpress , shopify , magento , laravel , code igniter ,.net with all frameworks and design :-html 5 ,Photoshop , bootstrap, angular js ,JavaScript
Proposed Milestones
$500 USD - we will discuss in pm