Hello,
I have read high level requirements of your App but as you mentioned below:
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All other details, like the graphic design, client library, teams, user interface library will be discussed on private hat.
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So, before we discuss above, I really wanted to know, if you are flexible in your budget, because if you want iOS & Android two Apps, then our estimate is even 3-4 times higher than your budget of US $1,500, as we have to calculate the cost based on the overall features & scope of work.
Look forward to hearing from you and talking to you further thru' Freelancer private message board.
Regards,
YK
LEADconcept