Hi there, I have read your project description and glad to hear that you are also a technical person, so it would be very easy for us to interact with our technical team.
Please see below answer to your questions:
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1. Why you think you are an expert.
LEADconcept: Because we have lot of experience in all the skills, iOS & .NET technologies. You can check out our past work reputation, reviews & ratings.
2. What are your regular job hours.
LEADconcept: Our working hours are Monday to Friday, 1:00 PM till 10:00 PM (Pakistan Standard Time, GMT + 5 hours) but in case of crucial deadlines, we turned on Saturday/Sunday & team can work late hours in the office to achieve the deadline. This also gives US/Canada clients first half of working hours for meetings, discussions, showing progress to get feedback etc.
3. How much time you will be able to help out.
LEADconcept: We can spend as much time as you want.
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Please send me complete list of enhancements/tweaks, so that I can estimate it precisely.