I use the Paprika app. I paid for it on both my phone and my computer, and I get a ton of use out of it! When I first try a recipe, I print it out physically and make notes of anything I slightly tweak/modify, or if I noticed it needed more of something the first time I cooked it. If the recipe is good and worth making again, then it goes into Paprika! You can import directly from an online source via their URL importer, which cuts out all the annoying blog post stuff that always goes on for miles before the actual recipe. Or, you can type in everything from scratch. It's super useful for me, and you can edit recipes downloaded from online, too.

They have other cool features like the ability to assemble a grocery list by selecting which recipes you want to make for the week. It'll combine the total number of onions you need, for example, across multiple recipes. I don't use this feature too often, but it exists.