I saw this auction:
https://www.ebay.co.uk/itm/Amiga-KIC....c100005.m1851
On the photographed screen it can be read "by SinSoft 1992".
I wonder if it's different from Relokick.
Is it perhaps more sophisticated? Maybe it can be used with other Kickstart/ROM files, since it shows on screen:
"Reading kickstart file...
Relocating...
Patching..."