Hello there,
If my understanding is correct, you are looking for a Native iOS application which will be for events.
There are many events application available, so do you have any reference app that is most similar to your required application? If so, please share its link.
Also, is this going to be for a specified region or globally?
There can be features like:
-- Register and Login
-- Create event and invite people
-- View events and register for it
-- Search nearby events | Google maps integration
and many more, it has very wide scope.
If you have some detailed feature-list, will be great if you can share with us, OR let's get in conversation to discuss them in details in PM. I will then share all the possible features and discussed features that can be integrated in the app, in the form of a proposal with milestone breakdown on my quote.
Let me know your thoughts. Awaiting your message for discussion in PM.
Regards
Sagar P.