What are some alternatives?
When comparing Ordering Stack and Sapaad, you can also consider the following products
SambaPOS - SambaPOS is an open source POS Software for Restaurants.
Brigade POS - Brigade is a full service restaurant point of sale system.
Lightspeed POS - retail and restaurant point-of-sale, ecommerce, and omnichannel solution
TouchBistro - iPad based Point of Sale solution for restaurants
Lavu - iPad Point of Sale System
Ordering.co - Create online ordering App for single and multi stores without coding.