The Solo Plan doesnt feature conversion goals and is pretty much useless for every marketer.

The description on the appsumo page states

"From there, you can choose the type of campaign, like traffic, reach, and conversions."

But none of the the appsumo codes features CONVERSION - you have to upgrade to an monthly plan for that.

So the one thing most marketers need is not included in the lifetime deal.. And it is not made clear in the description.