app developer

I'm looking for an experienced mobile app developer to help me build a comprehensive app for both iOS and Android. The primary function of the app is to be determined, so the developer will have to provide input as to its focus and design. I am open to hearing any suggestions. Time is not an issue, so the project can be done at whatever pace is deemed necessary. The freelancer I hire should have prior experience building comprehensive apps for both iOS and Android, as well as providing creative input in terms of design and features. I'm prepared to pay a competitive rate for the right candidate.