### What's New

We are constantly improving the TI-84 Graphing Calculator app to provide you with the best user experience possible.

In this update, we fixed a bug which caused matrices to use old values even if you edit them. In this version, you can edit all matrices, and the new values will be used!

### App Description

The perfect graphing calculator for high school and college. Your fingers easily navigate through the calculator using touch gestures, where you can also enter equations, and zoom in and out of colored graphs.

FIVE REASONS WHY YOU NEED THIS APP
1. Keyboard and command syntax similar to physical graphing calculators -> No need to learn a new calculator.
2. Powerful emulator -> No more waiting to graph functions compared to slow physical handhelds.
3. Enter fractions, equations or functions in the same way as you would write them on paper.
5. Save more than 80% compared to the retail price of an actual calculator which is over \$100.

FULL GRAPHING CALCULATOR
• Graph more than ten functions at once, each with a different color
• Add Lines, Horizontals, Verticals, and Tangents to the graph
• Use your finger or the arrow keys to trace the coordinates of your functions
• Calculate the Zero, Minimum, Maximum, Intersection, and Derivative
• Find integrals and color the area under the function
• Set the X and Y coordinates of the graphing window; zoom in and out with your fingers

• Enter calculations in natural textbook format
• Includes all basic arithmetic (+, -, x, ÷, ^, ², √, π, …)
• Use advanced functions like sin, cos, tan, e, ln, Σ, ...
• Scroll your calculation history and modify existing calculations with one tab
• Store and recall variables

MATRIX CALCULATOR
• Work with matrices the easy way -> store them or enter them directly on the calculator interface
• Do basic matrix arithmetic operations like addition, subtraction, multiplication or power of a Matrix
• Put the matrix into Reduced Row-Echelon Form and solve linear equation systems
• Calculate the determinant, inversion or transpose the matrix

TUTORIAL AND CATALOG
• Easy to understand tutorial to get started
• Full Catalog of all commands with syntax, example, and possible error messages
• Tab on highlighted math terms to read on point definitions

PERFECT FOR HIGH SCHOOL & COLLEGE STUDENTS
• Recommended by teachers to use in math classes
• Pre-Algebra, Algebra 1 & 2
• Pre-Calculus, Calculus
• Permitted on SAT/ ACT/ AP (your phone might not be permitted, but you can use the app for homework and borrow an actual calculator from your school for the test)

### iPhone Screenshots

(click to enlarge)

(click to enlarge)

### App Changes

• August 31, 2018 Initial release
• September 06, 2018 New version 1.0.1
• September 11, 2018 Price increase: \$4.99 -> \$6.99
• September 18, 2018 Price decrease: \$6.99 -> \$4.99
• September 26, 2018 New version 1.0.5
• October 16, 2018 New version 1.0.9