Hi, I'm professional developer with more than 15 years of experience in various areas including remote administration tool. I have built previously something similiar (host can see guest desktops) and it can be adapted to use only webcam instead. Can you clarify do you want iPhone or iOS (Mac) version of guest prg? Also can you clarify what other features (beside chat and webcam) do you need and what kind of details should chat support. I would like to better estimate time needed to complete this project and also the apporopriate budget, but for three platforms (Windows, iOS, Android) it will be higher than 750$