Very nice, but edits need additional programming
There is no way to apply an additional payment to multiple monthly payments. For example, to add additional payments onto four years worth of payments in a loan, it would require 48 edits. Or you can add the extra payment option in the calculator screen, but then theres no way to mark a lesser amount paid than the sum of the regular payment plus extra payment for the entire life of the loan, limiting that features usefulness to pre-loan calculations only. I sent an email to the dev requesting additional capability, hopefully he will respond.
skreien about
Loan Calculator Pro, v3.1