I like how it feels to use the app - it's easy, intuitive, has great functionality. The best part about this app is that it can be used for multiple events without additional costs. No other app can offer that same sort of service. Nothing yet - we're still in the process of testing this software. As a business owner, my priority is always customer satisfaction, and I believe that iTeep delivers just that. We've been using iTeep for two years now and have had no problems with the product whatsoever. And that's after our first year of usage.