I didn't want to put in my email address in order to access the detailed calculator... The quick check doesn't have nearly enough information to give anyone an idea of what actually to expect...
Being straight about it: the long-run panel is the Dimson-Marsh-Staunton dataset, which is a paid commercial licence, plus the compute. So this won't be free forever. The Quick Check will stay free and anonymous.
The detailed side is where the real inputs are: mortality table life expectancy, CPP/OAS or Social Security start ages, pensions, tax, flexible spending. Four inputs can't tell you much, agreed.