# Scientific Calculator fx-991

> Step-by-step Math Solver

Canonical page: [https://chrome-stats.com/d/id1673640297](https://chrome-stats.com/d/id1673640297)

## Overview

- **ID:** `id1673640297`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Dinh Phuc
- **Category:** Education
- **Rating:** 4.50 / 5 (403 ratings)
- **Version:** 1.9.0
- **Last updated:** 2026-08-21
- **First published:** 2023-02-28
- **Size:** 26 MB
- **Data as of:** 2026-09-06
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/scientific-calculator-fx-991/id1673640297)
- **Website:** [https://hiedu.vn/](https://hiedu.vn/)
- **Privacy policy:** [http://xn--ngdungtt-b4a68p.vn/policy\_calculator.html](http://xn--ngdungtt-b4a68p.vn/policy_calculator.html)

## Description

Scientific Calculator fx-991 is a powerful math and science tool that delivers step-by-step solutions, graphing, and a handy formula library. It’s perfect for students and STEM professionals tackling math, physics, and chemistry problems.

Featuring a Casio fx-991 inspired interface, step-by-step equation solving, advanced functions (fractions, derivatives, integrals, trigonometry), graphing mode, unit conversion, and a broad formula library, the app helps users learn faster and work more efficiently.

## Rankings

- #80,387 — Overall
- #8 — herramientas de hoja de cálculo
- #34 — hoja de cálculo
- #41 — feuilles de calcul
- #61 — calculator

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Source: [Chrome-Stats](https://chrome-stats.com/d/id1673640297)