We have been using this app since January 2013 and have been very pleased. It is a great affordable POS option for independent restaurants. No ongoing service contracts or monthly fees.
We are take-out and delivery and the customer database works great for maintaining customer information. During peak times we can connect an additional iPad and additional iPhones.
The program is completely customizable to meet specific needs and very user friendly. Although the setup was time-consuming, you dont have to be a tech-y to do it. And you can easily change prices, menu items, etc.
Given there are no ongoing service contracts, I was not expecting the customer service/tech support to be great, but I have been very impressed. The few times we have had questions, we have gotten email responses within a few hours. And the one time we did have a major issue (which was totally an Apple problem, not an Ambur problem) Amburs support person stayed on the phone for nearly an hour with me, getting it resolved. Very knowledgeable and patient.
I highly recommend this app. It is a fraction of the price of most other quality POS systems. You dont have to pay someone to set it up or make changes. And for those with experience on iPads and iPhones, it is a breeze to use. We love it!