It actually also has a web interface, though I'm not sure if it allows you to purchase a subscription from the site directly! Once you're logged in, https://www.umami.recipes/home should just display all your recipes.

I switched from Paprika a year or so ago just because I wanted to be able to add recipes from my desktop and couldn't be assed to pay the $30 for a desktop client when I'd already bought it for mobile devices. I found Umami and haven't looked back. I don't recall what the lifetime subscription costs, but I've been able to share it with family members who were also getting frustrated with Paprika.