The “Package” Ionic service will create an iOS version of the App without needing a Mac. But when you need to upload the software to iTunes it still requires Xcode or Application Loader, which both only run on a Mac.
Is there a way of uploading the final *.ipa file without use a Mac?
The other way is to use on of the many “mac mini in the cloud” services where you get remote access to a Mac hosted in a data center. This will take a bit more time of course, but with practice works quite well.
Not really, as you would enter it at an Ionic website and nobody would know what actually happens with the data you enter. They could say “Oh, we only use it and don’t save it anywhere” but there is not way to check this.