Calculator-Factory is an application which enjoys a calculator. It specialized in designing freely. Since a calculator is made into a favorite size, even if it is a big screen of iPhone6, it is calculable by one hand. It customizes intuitively. - The color of a background, the color of a calculation result, and the color of a button can be changed by the slider or a panel. - A calculator is customizable with a favorite color, a font, a photograph, or a picture. - It is also easy to change the number of buttons, and arrangement. - The image after change is displayed during change. By a favorite design. - It becomes the arrangement which can change the size of a button, the size of a calculator, and a position freely, and is easy to calculate them. - Arrangement of a button can be changed freely. The left-handed person can also carry out arrangement of a button reversely [ right-and-left ]. - The character of a button can also be changed freely. The "1" key can also be set to "One" - A favorite photograph can also be used for a background or a button. - A changed setup can be saved and can be called at any time. A camera is used. - It is also calculable, using a camera and making it visible against the background of a manuscript to calculate. - Since a manuscript can be seen and inputted, calculation can be inputted correctly quickly. The theme of a design is 25 kinds. - Traditional - White - Black - Pastel - Red & Yellow - Rainbow - Three-dimensional black - Translucent - Southpaw - Small - Max - Othello - Star - Bear - Big Bear - Japan - English - Vertical - Horizontal[Only addition] - Tally counter - Big - Line - Heart - Traditional2 - Under right-hand side Please use the PRO version, when an advertisement is unnecessary.