Dear Sir,
I have read Project Description & very much interested to develop website, iPhone App, Android App & WebServices for the communication but do you have more detailed requirements or at least high level features to estimate it precisely, because based on the project description, it is hard for me to give you any estimate.
Arabic is not a problem, as long as you provide me translation text.
Look forward to hearing from you.
Regards,
YK
LEADconcept