If you want simple, it is that. My only issue is the inability to have multiple currencies as my wife is from Argentina and I'd like to, more easily, track assets in both USD and ARS. Right now that requires a manual conversion (but the rate is unstable) or using two budgets (the approach I've used) which is tedious, but we don't do much with ARS so it's not a real hurdle.
Best thing is is that is simple to use while providing a lot of functionality if you want to get into it. If you want to get rid of ads it has a subscription model which I dislike, but the free version is really awesome.