Build me a Remote Assistance Application Powered by Augmented Reality

Job ID: 30868760

Budget: $250 – $750 USD

I need a Complete Full Source Codes of Both android (java) & iOS & WebVersion of Remote Assistance Application Powered by Augmented Reality the same as" PTC Chalk" App.
So i need
1.Private or Free Augmented Reality SDK or API
2.Video Calling App that Supports AR
3.I need Full Back end Source Codes from Server Side and Client Side .
How much does it cost? And how long ?