The app does as it says. I am able to control the functions of the iPad app with only a bit of a learning curve, as I couldn't find any real help files. That being said, it seems to only hold the connection as long as I am constantly updating the vital signs or rhythms. If I let it sit idle for more than 20 seconds or so, it disconnects and is difficult to reconnect. If I am using this app in a teaching scenario, where we may pause to discuss treatments or diagnoses, this part of the dartsim system is useless. If I am testing and changing the output frequently it works well enough.