In my experience I used several (Wabi, Orders Now, Rappi) and in general I notice that the discounts they offer are not the amount or percentage they offer since many times the prices in the applications are higher than in the physical stores. In other words, when there are discounts, it is generally advisable to buy since if they come we will not be saving as much as they want to show, there is also an economic saving. It should also be noted that time and convenience are saved and many times they offer several payment alternatives.