The basics:

TouchBistro was founded in 2010 to provide solutions to common restaurant pain points. At the heart of TouchBistro's product is their flagship iPad POS system, but the service also offers further solutions for other parts of restaurant operation. Available iPad configurations inside the app include a customer facing display, a kitchen display system, and a self-ordering kiosk. Additional features include payment processing, table management, staff management, inventory management, and more.

From the BOH TipJar:

TouchBistro's POS is updated with new tools every six to eight weeks, and they don't charge the user extra for those updates. That's good for the busy restaurateur who wants to stay up on industry best practices — rather than sweating the details, you can let the POS client do the hard work for you.

In their own words:

We're a team with hundreds of years of experience in the restaurant industry and we've used that experience to build an iPad POS system that helps restaurateurs make more money, deliver a great customer experience, and take the guesswork out of making business decisions. The system was designed to make managing your business easier, so you can focus on why you opened your restaurant in the first place.