Exiv4 - eviltoast

So I have this weird deja vu situation where I distinctly remember an EXIF viewer tool called exiv4(with a 4) but the only “exiv” tool I can find is exiv2. I can’t get over this feeling that I used an EXIF viewer called exiv4, however. I can only find an old Stack Exchange post mentioning it. Does anyone know about an exiv4 tool, or am I just crazy?