I feel like it might be beneficial for you to check out this thread here for some information on kegeling, if that's what you're after. For a poll on how many have tried kegeling (and whether they have used a toy or not), you could look here. If you're interested in information on that specific toy, I highly recommend reading the review that you linked to as well as the other two written about it. If you have any specific questions about it not answered in the reviews, you could try messaging one of the reviewers to ask for more information.
Hopefully that covers anything that you could possibly be interested in!