You can just turn down the volume on the guitar and the snark will keep working just fine.
Considering you can usually get a Snark for less than $10 on amazon, not sure I would bother with this for $4. I
FWIW, the Snark I had was the most sensitive tuner. I've tried others (monoprice, others belonging to other students in my guitar class, etc) and they just don't respond as well as the Snark.
Unfortunately, the snark build quality kind of sucks if you are moving them...