Hard code or remote database?

As you've noted, the "easy way", which is also the most flexible, is to pull the links from a server. I'd just put the links and whatever related metadata you need into a static JSON file and serve it up over HTTPS. Doesn't necessarily need to be a "database". Depending on your relationship with the customer (are they or you going to update it, do you have access to their web server, etc.) you could just host it on their server, or you could use your own. VPSes are dirt cheap.

Keep in mind that the app should fail gracefully if there's a problem contacting your server. So you'll probably want to cache the most recent successful download of the configuration file and fall back to that if necessary.

I download messages and other things from a Google site (you could place your web addresses there). They are free and easy to use

h ttps://sites.google.com/site/YourSelectionHere

I know about using xmlparser with a RSS feed. I know very little about JSON. Could you point me to a could place to read about doing this or give an example. Thanks

This should be a good beginning:

h ttps://www.raywenderlich.com/172145/encoding-decoding-and-serialization-in-swift-4

Thanks will check it out.

Thanks will look into these.