This is a simple, lovely, and beautiful calculator that is easy to use with slightly larger buttons. Since there are seven color background designs, each of which has the themes of “Flower” and “Heart”, you can choose and change the design according to your preference and mood. It can display a calculation result on the way and is thus functional because you can start the calculation again immediately. It is a simple calculator without special functions such as the function calculation, and therefore you cannot be confused with inputs.