It is a very convenient calculator App for grocery shopping. [Discount Calculator App] Percentage calculation such as "5% discount" and "10% discount" can be done with one touch. This calculator is very helpful at shopping time. [Sales Tax Calculator] Entering numbers on this calculator will quickly calculate and display the sales tax inclusive price. By the way, there are five tax rate buttons in the tax rate input dialog, and you can set the tax rate freely from the setting screen. [Customize buttons] Values of the discount button can be freely changed from 0% to 99% on the setting screen. [History (Total amount of grocery shopping)] This calculator App can save the entered price , tax-inclusive price, discount rate, etc. and check the total amount later. [Theme] The appearance color of this calculator App can be selected from Orange, Pink, Dark Gray, Blue, Light Blue and Black. [Others] The past update history of this app are listed in the following site. http://apps.kame33.com/disc_calc.html Now, install this application for free now and enjoy grocery shopping.