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Calc89 CAS Graphing Calculator

Intended for use with TI-89
Fredinax Graphing Calculator · Education
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★ 3.50average rating
2ratings
+1new ratings, last 7 days
—not in top charts now

Calc89 CAS Graphing Calculator is an iOS Education app by Fredinax Graphing Calculator, released on Oct 27, 2026. The current version, 1.0.0, came out 18 days ago. It has 2 ratings with an average of 3.5 stars, +1 in the last 7 days. It is free to download and offers 6 in-app purchases priced from $2.99 to $44.99.

Ratings breakdown

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50%
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App info

Developer
Fredinax Graphing Calculator
Category
Education, Utilities
Released
Oct 27, 2026
Version
1.0.0 (Oct 28, 2026)
Price
Free
Size
77.3 MB
Requires
iOS 17.0
Age rating
4+
Languages
English

In-app purchases

Calculator Lifetime$8.99
Calculate89 AI Plus$14.99
Calculate89 AI Pro$5.99
Calculate89 AI Plus$2.99
Calculate89 AI Pro$44.99
Calculate89 AI Plus$19.99
Current prices, App Store US.
🔒 Price history3 snapshots: when prices changed and new plans appearedUnlock free — sign up

About Calc89 CAS Graphing Calculator

CALC89, THE CAS GRAPHING CALCULATOR The CAS graphing calculator intended for use with TI-89 Titanium. Solve equations exactly, factor and expand, take derivatives and integrals, and graph everything, on a keypad with 2nd, ◆ and alpha layers. EXACT ANSWERS WITH A REAL CAS Get the exact result your teacher expects: fractions, roots and π stay exact, and one key gives the decimal when you need it. • solve, cSolve, zeros and nSolve for equations, inequalities and systems • factor, expand, partial fractions, common denominators • Derivatives with d, integrals with ∫, limits, sums Σ and products Π • Taylor polynomials and differential equations with deSolve • The with operator: evaluate at a point or restrict a solution in one line • Define your own functions and store values in variables • Matrices and lists with letters: det, inverse, rref, eigenvalues • Units: convert meters to feet or…
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