This app was mentioned in 3 comments, with an average of 1.00 upvote
If you were using android I'd recommend https://play.google.com/store/apps/details?id=com.Darcar.FowCompendium&hl=en , but since you're with apple, I'm not entirely sure.
As for boxes, I'd suggest The most recent 2 since they'll be apart of the most recent cluster and won't rotate out for awhile. Plus, CFC has dual stones which are essential to almost every relevant deck nowadays, and LEL I think personally is introducing some interesting cards that have the potential to grow in the future sets~(And also majority of the foundation for Fox, which is a well regarded/popular deck right now)
That being said, I would also recommend grabbing some staple singles from Alice Cluster so you don't miss out and fall behind when competing against your peers~(And save some money along that way~)
I don't have the time to go into more detail (which I'm sure someone else will help you with), but I wish you the best of luck for your future in the FoW Game, Take Care~!
ANd even if
There is a mobile app for Android: https://play.google.com/store/apps/details?id=com.Darcar.FowCompendium
I use this app for android: Fow Compendium
https://play.google.com/store/apps/details?id=com.Darcar.FowCompendium