With the help of TNK Wallet, you can easily and quickly calculate your potential return on investment using various calculation methods, such as ROI, ROA, ROE and many others. You can also choose the period for which you need to make a calculation, and specify the initial and final balance to get a more accurate result.

But that's not all TNK Wallet can do. It also has a full-featured regular calculator that includes basic math operations such as addition, subtraction, multiplication, and division, as well as functions for working with percentages and square roots.

TNK Wallet is presented in a simple and intuitive interface that makes it easily accessible to everyone. It also has the ability to save the history of calculations, allowing you to quickly return to previous results if necessary.