Greetings,
I have read initial high level requirements & I have already signed the NDA, so pleas send me more detailed specs of your App or source code, I can then instruct my technical team lead to analyze it to prepare our precise estimate in terms of time & cost to move forward. As for now, our current bid is just a placeholder to submit the proposal & start our conversation thru' Freelancer message board but once I hear from you, then I can give you our firm estimate.
Of course, English is not a problem, as we have many clients around the globe, so our team is dealing with them directly.
Look forward to hearing from you and talking to you further thru' Freelancer message board.
Regards,
YK
LEADconcept