SimpleCalc+ [Ad-free] This calculator app looks and works like a real calculator that you use at home or in your workplace. It includes tax and business functions which is very useful for professionals and small business owners. * 12 digits * Tax calculation * Percentage (%) * Cost/ selling price/ gross margin calculations * Memory operations * Grand total (GT) * Square root * +/- (Sign change) * Arithmetic constant calculation Disclaimer: This calculator app is not associated, affiliated, endorsed, or sponsored by with Casio Computer Co., Ltd.