I'm the owner and developer of fishingreminder. If you mean the day ratings then this is because we include the ancient Maori fishing calendar in our calculations and combine the ratings with the Solunar predictions. I personally found this to be more effective. Why limit yourself to only one theory, right?
As for the major and minor times. They should be similar to other Solunar Calendars. Although I recently had a question as to why the bite times at fishingreminder start an hour earlier than on another site. (I think it was tide4fishing) I found out that the other site was calculating the start of their bite times at moonrise/moonset But according to the Solunar Theory the minor bite times will start an hour before moonrise/moonset until an hour after. So clearly the bite times of the other page weren't calculated properly - or at least not in sync with the Solunar Theory.