New Free KiwiSaver Fund Comparison Tool Using Morningstar NZ Data. Choosing the right KiwiSaver fund can have a major impact on your long-term retirement savings - but comparing funds is often harder than it should be. Many New Zealanders know their KiwiSaver provider, but far fewer understand how their fund is actually performing compared to similar funds in the same risk category. That’s why I’ve launched a new free KiwiSaver comparison tool using the latest Morningstar