I haven't looked closely into either, but in generaly, they're both going to be doing some form of SLAM (Simultaneous Location And Mapping), but the particulars

I haven't looked closely into either, but in generaly, they're both going to be doing some form of SLAM (Simultaneous Location And Mapping), but the particulars of the algorithms will be proprietary to each vendor. That said, that should largely be an implementation detail. The positioning data provided through their respective APIs will likely be nearly identical.