TalkingCal is a voice output calculator program designed for use by individuals who are blind or have low vision. This application (or app) is for use with the Apple iPhone, iPod Touch or iPad. The user launches the app, and touches numbers and arithmetic signs on the virtual calculator's keyboard. The app will speak the numbers, arithmetic signs, and the result of any operations. OPTIONS: Speech-to-speech (dictation) feature ($1.99 in-app purchase required) that enables the user to talk to the program (20 transactions per day). COMPATIBILITY: For use with an Apple iPhone, iPod Touch, or iPad. SYSTEM REQUIREMENTS: Apple iOS 4.3 or later.