Hello.
This is Hadia from Pakistan, an experianced iOS and macOS developer.
I have thoroughly read your requirements, and need to ask a few questions.
Is their any live domain right now ?
Information shown in gallery is static or some admin can change/update/add new ?
And what do you exactly mean by live updated ? Users can post 'statuses' as in facebook ? Or you need some other mechanism ?
Looking forward for your reply.
Regards,