[notahacker]

Or worse. I see a new startup looking for salespeople for a new point of sales app every week, so the "not a very hot field" observation is more likely to be commentary on the overall market potential than it not being popular to try. Of course, there are a lot of restaurants out there, but they tend towards being the opposite of the type of customer you want to sell to: small, traditional, not very technically or commercially minded and needing an in-person visit. And quite possibly having been pitched by two other iPad/Android/SaaS apps in the last 12 months.

It's possible this product does something completely different, but its also possible that some of the difficulties the OP and his cofounder are having selling it are more down to it being particularly difficult and time consuming to convince the market they need it, and less down anything they're doing wrong in their sales approach.