Plickers is a great little app, but it doesn't yet deliver the standard I was hoping for. Being an iPhone app, and not an iPad app, the screen resolution is all wrong on an iPad. Then, V2 keeps crashing on an iPad. There is also a significant time delay in reporting on all the card results. Sometimes it will only show all my students' results after I have closed and reopened the app. However, when it works, it works really well. I continue to use it, despite the hassles, because it is such a great little app. If the crashing and time delay issues could be sorted out, I would rate this 5 stars.