Natural input
True-Form Math
Fractions stack, roots stretch and powers rise exactly the way students write them on paper.
True-Form scientific calculation
Maths that looksthe way you think.
Calcixa CT-500 PRO combines natural textbook-style input, eight specialist modes and a distraction-free interface in one focused calculator.
No ads Works privately Student-first design
CT-500 PRO
8specialist modes
40scientific constants
40unit conversions
62manual pages
A serious calculator, made approachable
Powerful enough for the syllabus. Clear enough for every day.
Every surface is designed around the calculation: readable expressions, predictable keys, useful modes and no unnecessary noise.
Complete toolkit
8 calculation modes
Move from everyday COMP calculations to complex numbers, statistics, equations, matrices, vectors and tables.
Advanced maths
Integrals, sums & derivatives
Build definite integrals, summations, products and numerical derivatives in a clear editable expression.
Exact or decimal
Answers in the form you need
Toggle exact fractions, surds and π forms to decimals, then step scientific notation by engineering powers.
Privacy by design
No account. No tracking.
Calculations stay on the device. There are no ads, analytics profiles or personal-data collection.
One keypad · eight workspaces
Switch context, not calculators.
Each mode keeps the right operations close while the familiar keypad stays consistent.
CALCIXA · TRUE-FORM MATH
CT-500 PRO
User Manual &
Formula Handbook
27 sectionsEdition 2026
The complete official reference
Every key explained. Every major formula close at hand.
The 62-page handbook is verified against the app itself. It covers the keypad, SHIFT and ALPHA functions, all eight modes, worked examples, error messages and a full formula handbook.
18app-guide sections
9formula chapters
A4print-ready layout
Formula handbook
From algebra to atomic constants.
The reference follows the subjects students actually move through, with calculator key paths alongside the mathematics.
Natural display
x =−b ± √(b² − 4ac)2a
Quadratic formula · AlgebraYour work stays yours
Built to calculate, not to track.
No account, no advertising profile and no personal data collection. Your expressions and calculation history remain on your device.
Calcixa CT-500 PRO
A better space to solve.
Download the focused scientific calculator made for clear thinking and serious study.
Get Calcixa free