this works for me
Dauntless.
I have used them for the ATP helicopter and the CFI helicopter. Its a good program and they have 99+ percent of the questions. In other words I have found a very small amount that are not in the guides or have been changed slightly. They have question banks for every written. They have plenty of different scenarios you can use to study. Over the years I have used other software as well and they all provide essentially the same experience.
Cheers