What do you find better about them?
Their "Trail Crampon Ultra" is an almost exact knockoff, and seems good, though the Kahtoolas appear to wear a little better to me.
Their "Trail Crampon" has the plates instead of chains, which might be preferred by some people for certain uses. I've found that they don't tend to hold on your shoe as nicely as the chain ones (comparing Hillsound and another plate-style with hillsound and kahtoola chain-style).
Stronger underneath compared to the Katoola spikes of 3-4 years, i snapped the metal link between front and back on third time of use, from the pic posted above it looks like they've modified the design to strengthen them.