We only deliver, no counter and no tables. Does this work as pizza delivery software on its own?

Yes, and you can ignore the counter entirely. Your ordering page takes the orders, Settings → Condominiums & delivery fees holds the buildings and their fees, and the orders board with your riders' WhatsApp group runs the deliveries. Option groups on each pizza handle sizes, crusts and toppings. Stock counts, loyalty stamps and the review request all work without a POS. Pizza delivery software here is the plan you choose, with no add-on needed. The Getting started tab in the docs takes you through day one.