QUALIFIER PLUS CALCULATOR: The world's best finance & qualifying calculator. Impress your clients with fast, accurate answers to all their Real Estate finance problems with the world's most complete and easy-to-use qualifying calculator. Have the answers to tough financing questions at your fingertips! Unlike a regular calculator, the Qualifier Plus IIIfx has custom and intuitive "mortgage & qualifying keys" that allow you to solve hundreds of real estate problems quickly and accurately. No confusing keys or functions. You can use this calculator when taking the Florida Real Estate Associate state exam or the Florida Real Estate Broker state exam.