I use one. I find it helpful. So far have not cut down on medication. Sleeping a little better at night

You wear it just below your knee cap and it gets rid of pain in the body.

Yes. I change legs every other night and also give a rest night.
There is an App for the quell and you can keep an eye on your treatment.
How many hours you used it.
How many hours of good sleep
How long did you sleep on your right side
How long did you sleep on your left side

I got a Quell and started using it in August.
I do find I get some relief but not 100%. I find it particularly useful at night, getting a little more sleep.
Y.

Still using my Quell. Helping with pain but have not reduced medication as yet. Sleep somewhat better at night. Developed an allergy to the gel pads and had to stop for a while. I think because I am always so hot I developed the allergy. For me it's far better then a TENS.
My only problem is the gel pads are very expensive and you need to change them frequently.
Yvonne.