Intelligender Predictor

Tori
Has anyone used the Intelligender Gender Predictor? My mother-in-law purchased one for me, and whereas I know they're just for fun, how accurate was the test for you? 
My husband wants a boy, and when I showed him the test box, he said, "Those are neat, but I won't believe it until we actually see in a scan." I took the test this morning, and sent him a picture with the results saying boy, and he said, "Boom!! 100% accurate!!" 😂