The best alternatives to The Good Stuff Pizza are Push for Pizza, PizzaMe!, and Slice. If these 3 options don't work for you, we've listed a few more alternatives below.
In parts of Italy, when someone goes into a coffee shop and orders an espresso, they simply pay for two: the customer drinks one and the other one remains “suspended” until someone else orders comes in and orders it. I wanted to create the same, but for pizza.