Is there a more sophisticated tool than Rohloff HG-Check I bought the Rohloff HG-Check as it was apparently the only tool out there to measure cassette wear.

IMHO it's just too uncomfortable to use and with practice and good sight you can actually determine faster if the cassette needs to be changed.

Already checked:  How to tell when to replace cassette?

Is there a tool more sophisticated/expensive or even unknown to the general public that I can check? And or easier/faster to use.

Plain honest, I'm just not that good checking wear by eyesight.
I bought one too - on the same idea of having a better way to check for chain/cassette wear.   Its pretty useless to be honest.

The best tool for knowing how much mileage is on a chain/cassette is a set of accurate records.   Cars have mileometers/odometers and stationary engines have hour meters.  Sadly bikes don't have the same hardware.

So I record every ride on Strava, and religiously use the "My Gear"* options to note when things were changed.  Works for me

* For clarity, that's "gear" in the sense of "equipment", rather than specifically gears as in cogs.



But records don't help where you have a bike with unknown provenance.  For those you have to fire up the eye-crometer and make an educated guess.   And ride it, if feasible.  You can find more faults quicker in a 30 second ride than any other way.