We already implemented it before in one of our projects. We can provide screen shoots.
We are a team of professional engineers in C/C++/C# for windows Objective-C for MAC and iOS and Java for Android, with 14 years experience in programming field.
We have a great experience in developing MAC OSX/ iPhone / iPad software using Objective-C, Cocoa, Cocoa Touch, and xCode.
We have made many projects for iOS for example check the following links:
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Also, We develop for Android using Java and Eclipse compiler (Native).
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We promise you with very high quality product and on time delivery. Samples are on our portfolio page of profile page on http://www.freelancer.com/u/usamacpp.html.
Waiting for your response.
Regards.