Hi, I have over 6 years of experience working with mobile development, with my primary focus being iOS and macOS development.
The app you are looking to build has been described in detail, so that helps out a lot. Would like to have a chance to cooperate with you on this project.
I am available most of the time on Skype/chat, and my timezone is GMT 2+. If you wish to discuss more about this issue, feel free to add me on Skype, my contact is svegjan.