[iPhone God App] It was found using the Interest Calculator Pro actually

A superflexible and complete interest calculator: your perfect personal finance companion!

An highly valuable instrument that supports fixed or yearly variable interest rates, inflation impact evaluation, simple, compound or continuous capitalization, taxes on interest and more.

••• You can set all kinds of interest settings:

+ fixed or yearly variable interest rate
+ simple, compound or continuous capitalization
+ taxes on interest
+ period of capitalization (from daily to yearly)
+ civil year, commercial year or mixed convention

••• You can do any kind of calculations:

+ Calculate the final amount

+ Calculate when a certain amount can be reached given a certain interest rate

+ Calculate which rate is necessary to reach a certain amount in a certain time frame

+ Calculate how the impact of inflation affects your plans

+ You can either calculate the final amount, or the principal, or the interest rate, or the start date, or the end date of your investment!

••• You can simulate the effects of inflation and so calculate the real interest rate and the final amount net of inflation!

+ You can set a fixed inflation rate or yearly variable inflation rates

+ Includes historic inflation rates for many worldwide countries. UK and USA data range from 1900!

••• There's a practical summary view, showing you an year over year progress of your interest plan

••• You can save your plan, or load from some interesting prebuilt ones

••• The app includes a practical and flexible percentage calculator, which let you calculate percentages, sum of percentages, sales, VAT and VAT deduction, percentage composition