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The iPhone interest calculator:

NEURONprocessings "iPerCalc": the first high-quality interest and finance calculator for Apples iPhone and iPod touch.

It is simple to use. Interest, current and offset accounts can now be calculated at a professional level on Apples mobile platform, for example validating investment, loans and accounts.

The general iPerCalc principle:

Firstly, the basic data for the calculation is entered: Interest rates, interest methods and interest payment dates. The entries (account transactions) are then simply captured on an entry line. The calculation takes place in real time and is displayed in the transaction data.

As a special feature, the actual interest rate and interest percentage of each entry is displayed and not only the total summary. Therefore the user is able to immediately see the effect of each deposit and disbursement. This transparency is not available on bank statements for example, because these only give an overall sum of the interest and interest days once a month.

Once a base period has been captured, it can be duplicated as often as required and generated in real time with new basic data for comparative calculations e.g. alternative interest conditions. Each calculation can be sent via email in the CSV format.

The application is suitable for everyone interested in calculating, checking or simulating interest yields and debited interest. From investment professionals through to accountants, who need to calculate offset accounts for companies, right up to private individuals who would like to keep a closer eye on their bank.