Math programs for the TI-84 Evo, sent to your calculator straight from this page. Each one adds something the calculator can't do on its own, like exact simplified radicals instead of decimals.
Each one installs in one click from this page, with nothing else to set up first. Most run from the calculator's built-in TI-Basic menu; CalcPlex CAS runs in the Python app. Looking for games instead? They're on the TI-84 Evo games page.
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Fixing send problems
- Nothing listed in the connect popup: the calculator has to be plugged in and switched on to appear. Wake it up, check the USB cable (charge-only cables won't work), or move to a different port. Close any other tab that's using the calculator. It's also worth updating Chrome or Edge.
- Calculator busy? A program or menu is open on it.
Back out to the home screen (press
clearon the calculator repeatedly), then retry. - Program disappeared from the calculator? A reset or RAM clear removes programs. Just come back to this page and send it again.
- CalcPlex CAS says MemoryError when it starts? Delete other programs and games until it runs. Every installed program counts, TI-Basic ones included, and archiving is not enough. CAS runs happily when everything else adds up to under about 20KB; you can resend anything you deleted later.
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Safari, Firefox, and phones can't connect to the calculator. Open this page in
Chrome or Edge on a computer and the one-click button does the
rest. Once a program is on the calculator, press prgm, choose
TI-Basic (or Python App for CalcPlex CAS), and pick it
from the list.
Still stuck? Email contact@calcplex.com and we'll take a look.
Quadratic Formula
Type a, b, and c and it prints both solutions to ax²+bx+c=0.
CalcPlex CAS
Factors polynomials, solves equations, does derivatives. Exact answers.
Radical Simplifier
Turns any square root into its exact simplified form: type 50 and get 5√2, not 7.071.
Factoring Polynomials
Type the coefficients and it prints the factored form, like (x-2)(x-3).
Distance Formula
Type the coordinates of two points and it finds the distance between them.
Pythagorean Theorem
Type the two sides of a right triangle you know and it finds the third.
Slope Formula
Type two points and get the slope and the y=mx+b equation.
Prime Factorization
Break any whole number into its prime factors, like 360 into 2³·3²·5.