How it plugs in
—Public API
NoOpen source
YesFree tier
Signal on Calculators5.8#7 of 21
The calculator is described as easy to navigate and appropriate for students as young as elementary schoolers.

Pricing
- Desmos Four Function CalculatorFree · Four-function calculator; square root and previous-answer functionsFree
- Desmos Four-Function CalculatorFree · Four-function calculator; square roots; previous-answer referenceFree
As desmos.com lists them, checked 14 Nov 2026.
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