I haven’t got deep into using both yet but from what I’ve seen so far they are very different.
Actual is basically YNAB so if you’ve used that before you’ll be familiar with it. I am a current subscriber to YNAB and considering fully switching over to Actual.
Firefly iii is like an accounting program to manage all your finances and less about budget categories and giving every dollar a job. I personally don’t see my self using this much.
I am using KitchenOwl right now for recipe management. I haven’t gotten deep into it yet and I am intrigued to try something different. There was another one I was looking at that hadn’t been updated in a while so I just settled on KitchenOwl I’ll check those others out ! Which one is your preference?