You make a good point that adding more educational scaffolding would be helpful. I try to include some sensible defaults where I can (e.g. assuming houses are going to have some maintenance/insurance/tax costs associated with them), but yeah in some places existing knowledge or independent research comes in handy.

Are there sections in the app that jump out to you as good places to inject more educational content? As you point out, one of the input fields when you add as house and choose "financed" is APR. Maybe that could link to a dedicated page with common rates based on a few parameters like credit score, or perhaps even a separate tool dedicated to estimating that sort of thing?