Yoast free version gives you a lot of options that don’t go away. They don’t bait you with partial functionality. The free stuff works well as is…or you can upgrade.
If someone wants to ignore this developers current bad business rep and try this service then do so. But it doesn’t actually make your site work any better as an installation, so why install it?
Use it from your browser and then you don’t risk conflicts with other, more essential plugins.