Nice vacuum based arithmetic G&M. 

This calculator assumes an annual housing price increase rate of 0%. This accounting negligence is especially misleading in hot housing market producing values and timelines that are not founded in reality.

For example, take your default case in Toronto: $5000 saved, adding $500 monthly, taking to 7.5 years to save $51 000 for a down payment on a $760 000 home
Reality: Assuming an extremely conservative housing price growth rate of 15% (nearly half of last years) during this 7.5 years that same $760 000 home will rise to over $2 million requiring a 20% down payment of $400 000 as the mortgage is not insurable.
 
Please acknowledge the limitations of your calculator, or better yet add annual housing price increase  scenarios to the calculator (as depressing at they are) so the users can have an honest idea of what to expect when saving for a home.