InvestCalc is a handy calculator app that (unsurprisingly) provides users with the ability to calculate how their money might grow over the life of an investment. Created by Reva Technologies, the app can also calculate debts such as long-term loans and provides an amazing amount of financial insight for $0.99.
InvestCalc has screens for three types [...]

LoanPad is a useful assistant to anyone thinking about a loan or paying a loan. The first iPhone app by developer centerThread, loanPad offers the possibility of analyzing different loan scenarios and it lets the user save numerous loans to compare or manage.
loanPad allows you to enter any loan’s characteristics before calculating payments and balances. [...]