Instant Approval Credit Card - Version 1 The instant approval credit card calculator will allow you to import any number of different figures so that you can see how we paying your bills will sit with your level of income. The Calculator is extremely easy to use and runs on all versions of Windows. All you have to do is type in the amount you intend to spend, the interest-rate and the period of time are over which you foresee repaying over. You can run different numbers very quick