Sneak peek gender accuracy?

I really want to get the sneak peek gender predictor in 2 weeks when I’m 8 weeks, has anyone tried it? Was it accurate?

Edit:

So I did some research and I see that it seems like people who get wrong results are not making sure surfaces and hands are decontaminated fully (which I understand could be tricky). From what I gather it seems like if you get a girl result, it would be 100% correct, but if you get a boy result it could be possible contamination! So I’m going to be very diligent about making sure everything is extremely clean and has NO male contact when I use it!