Is it possible to transfer a work on windows to an iphone?
Or the project to mac and then build with no problems to an iphone?
You need a mac to build an app for iphone or you can use an online service.
Yes I now that, but I wanted to know, if there is a other solution to use a windows PC and to programm and then copie the documents to a MAC for building
Yes you can. copy project folder from windows then add ios platform in mac. You are ready to build your project.