The TI 84 Plus Graphing Calculator TI 84 Plus Elite Manual is the best scientific calculator + app on the digital app stores in our opinion. This app is very easy to navigate and will teach you what you need to know to be the ti-84 graphing calculator pro! A must have for the high school and college students. These calculators are as hard as flying spaceships!! So with detailed zooms and topic breakdowns you will be relieved at the simplicity of the app. Get started with our graphing TI 84 Plus calculator manual! Also check out our other calculator manuals such as the basic TI-84 calculator as well!