Ah, pop-sockets, stick it on the back of yr phone, makes it easier to hold.
Most of us will say, yeah, whatever, holding a phone isn't a problem, but there was a thread a while back with some folks with muscle co-ordination issues, MS, etc. saying it did actually help a lot, so I wouldn't knock it.
Can't find it now, but there was an article in a financial newspaper interviewing the founder. His motivation seemed pretty good. It came across as, "made it in my basement, took a financial risk, it worked, some peeps think it's gimmicky, but it works for disabled people", so hats off to the boy for taking a risk.