Is there a rev matching device?

I understand that rev matching is acquired skill by practicing and driving more. I’d like to know if there was a device you could attach to your car that would detect and notify you if engine rev is match with your transmission (maybe with an audible beep)

A device like that would be very useful for new drivers trying to practice rev matching, because rev matching is very useful when down shifting without stalling like when your going up a hill.

I have a 1.5 Manual Honda Mobilio