** This is a paid version of the popular citizen calculator app on play store. ** This app is a fully working emulator of citizen calculator model CT-555N/ CT-555W. The check and correct feature is useful for verifying long calculations without reentering the values and is ideal for general and business purposes. Citizen Calculator Features:- * Basic math operations (addition, subtraction, multiplication, division) * Check and correct * Auto replay * Percent calculation * Tax calculation * Memory calculation * Price mark-up & mark-down calculation * Constants calculation * Number formatting (Decimal and digit-grouping) as per device locale * Grand total (GT)