We also perform testing on a wide variety of devices. We cannot gaurantee supporting every device under the sun. However, if there's one that is important to your customers let us know so we can explore the options.
DogfoodingWe also practice what we preach. In addition to using Urgency in our own stores, we are using the same system within the Urgency application itself. When you view the detail on a Creative, the urgency in display is served up live from the Urgency application.
Live demosWe incorporate live demos and weave those where-ever we can within the Urgency application. Would you like to test on your mobile?