My wife really wanted ice cream this summer, last summer we largely went without because we were eating low fat+low sugar. We got one of those Ninja Creami things and it's been pretty fantastic. Much better than the low cal ice cream options at the store. We can make a pint with between 120 and 300 calories, depending on what we do.

It's almost like a shaved ice machine on steroids, it has an impeller that starts at the top and moves down through the frozen mixture and then back up. It's a knock off of some $5,000 commercial machine. Instead of folding air and fat into the mixture while freezing, you freeze the container and then it completely destroys the ice crystals.

I tend to do a mix of a third cup of 0% yogurt, a tbsp of allulose (fairly expensive sugar substitute so most store products don't use it), a pinch of xantham gum, and then the remainder fruit (cherries, blueberries, mango, peaches, pears). I've also done a can of low sugar canned fruit, xantham gum, allulose, comes out kind of like a sorbet.

My wife does a base using low fat evaporated milk, and she gets a lot fancier (making low sugar mix ins, exotic flavors like coffee bourbon), and those come out much richer. Those are more like 260 calories/pint. It also allows you to taylor the flavor, for example I'm happy with mine much less sweet than grocery store ice creams.

It seemed fairly gimicky, and we avoided it for quite a while because of that, but she found it on sale for $150. Full price is $200, woot had them refurb for $100 last week. Fairly expensive, and noisy as hell, but we use it pretty much daily.