My fridge won't chill the freezer with the controller on, even at 50F. Before buying a controller, try turning the stock thermostat on the fridge to the warmest setting and see what the freezer does when it's controller is set on max.
Next: No idea
Fermenting: Oktoberfestbier, Kolsch, Homegrown Hop IPA 2015, Doppelbock, Egregious-ish, Barrel Fermented Dreg DelcoLambic, Sacch Trois Helles
Drinking: Oat & Conan DIPA, RIS, Carrot Blossom Cedar Mead, Dusseldorf Altbier, Cider, Rye Berliner Weisse, Sauerkraut Fermented Gose, Gueuze, Brett Blonde, Kriek, Saison, Sour Blonde
Barrel aged: RIS, Rye Barleywine, Tripel, Wee-Heavy