I think it is important to keep free plan costs low since conversion rate from Free to Paid plan is very low as I heard from a interview with Todoist CEO. I wo

I think it is important to keep free plan costs low since conversion rate from Free to Paid plan is very low as I heard from a interview with Todoist CEO. I wonder how companies split their features among pricing tiers? what is the right feature split between free and paid (in the context of B2C)?