using osm data in xcode tutorial needed

hi guys i'm just an accountant but i have a big love with coding and making app :). last week i wanna develop my own gps navigation app for my own use. after several days of researching on internet . i find that OSM is my answer so far :). there couple of guys ask similar question like me before but i still wanna ask this a again because other question and answer are mostly for android :). So there are few point i figure out when research and i'm not sure that i understand it clearly. so pls let me know if something wrong :

according to my research making a navigation app for ios can process in 2 ways : 1. use xcode and add another framework , API, from another website ( access their services and must be pay ) like skobbler , argis etc.

1. use open source like OSM :) to develop my own map view, my own themes for the map ( tile overlay ? not sure). further more, in my app, people can find POI but they also can modify it for their own use. ( have to create a server to save map database and other feature include modified attribute that user provided right ?)

2. did apple provided framework such as mapkit, MKcorelocation work with OSM api ?

so do u guy have any open resource and tutorial related to ios , it could help me to further research pls share it with me . i will never forget your help.