I believe the Fred Cain APP, Bush Hog (brand) APP and Dirt Dog APP all emanate from the same plant. The only differences are the decals.
They all sure look exactly the same except for pricing. The EA version is the best price. The Dirt Dog is next up in price and the Brush Hog version is WAY pricey.
We have/had hard pan in our large garden plot.
It wont really go away with plowing we needed to had soil organic matter (organic farmer here) and let break down, run a cover crop before winter plant in September. We did oats and also did peas and oats mix. It dies back and decomps and also helps break down the hard pan and mostly keeps it loose-ish. Drought changes everything.
Best way to add soil organic matter is cover crops. All crops fix nitrogen. Some do it better than others. I like cover crops with deep roots for our hard pan and why we chose oats.
We will grow a patch of oats in another field to collect seed and also get straw/hay. If you have animals can harvest as hay. Our summer oats patch is not hardpan.
What we did for our veggie garden was an 18" moldboard plow our farmer neighbor ran several rows with in 1x only then we spread home made pot-ash then tilled it 2 or 3 times to mix in the pot-ash and then planted the first cover crop in the fall.
In spring we till in that cover crop and made beds with a bedder, spread straw in between rows and plant the beds.
Will repeat the tiller after harvest is finished and plant another cover crop that will die with the cold/frost and spread manure in late winter then till that in again in the spring make beds with straw and plant again. Repeat..
Our goal is no-till but we aint there yet. Still have some hard pan and now this year with drought the soil is pretty hard. Will likely spread some green sand at tilling time in the late fall see if that helps.
I should get a soil sample this fall after tilling and see what we got.