# Scientific Calculator PRO > Scientific Calculator 991 Pro with Graph, Algebra, Matrix & Engineering Tools Canonical page: [https://chrome-stats.com/d/com.grow.calculator.engineering](https://chrome-stats.com/d/com.grow.calculator.engineering) ## Overview - **ID:** `com.grow.calculator.engineering` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** growapps - **Category:** EDUCATION - **Downloads:** 58 - **Version:** 1.0.8 - **Last updated:** 2026-03-18 - **First published:** 2026-03-12 - **Publisher country:** IN - **Size:** 38 MB - **Data as of:** 2026-09-11 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.grow.calculator.engineering) - **Website:** [https://growcalculators.com/](https://growcalculators.com/) - **Privacy policy:** [https://growcalculators.com/privacy-policy](https://growcalculators.com/privacy-policy) ## Description Advanced Scientific & Engineering Calculator

Scientific Calculator 991-Style with Graph Plotter, Algebra Solver, Matrix, Statistics and Engineering Tools.

This powerful all-in-one calculator is designed for students, engineers, teachers, and professionals who need advanced calculations on their mobile device.

Perfect for JEE, NEET, GATE, engineering studies, college mathematics, physics, and electronics.

Works fully offline with fast and accurate results.

🔢 SCIENTIFIC CALCULATOR (991-STYLE)

• Basic arithmetic (+, −, ×, ÷)
• Powers, roots and factorial
• Trigonometric functions (sin, cos, tan)
• Inverse trig (sin⁻¹, cos⁻¹, tan⁻¹)
• Logarithm and natural log
• DEG / RAD angle modes
• Engineering notation (ENG)
• Smart bracket handling
• ANS recall for previous result
• Calculation history (last 50)
• Variables (A, B, C, X, Y)
• 12 built-in physical constants
• High-precision calculations

📈 GRAPH PLOTTER

• Plot up to 4 functions simultaneously
• Cartesian, Polar and Parametric graphs
• Pinch to zoom and pan
• Trace mode to inspect exact coordinates
• Intersection detection between curves
• Function value tables
• Toggle individual graphs on/off
• Example presets (Rose, Cardioid, Lissajous)

📊 ALGEBRA SOLVER

Solve polynomial equations instantly:

• Linear equations
• Quadratic equations
• Cubic equations
• Quartic (degree 4) equations

Great for homework verification and exam preparation.

∫ CALCULUS TOOLS

• Numerical derivatives
• Definite integrals
• Function evaluation

Supports expressions like:

sin(x)
cos(x)
x²
log(x)
🔢 COMPLEX NUMBERS

• Addition, subtraction, multiplication, division
• Magnitude and phase
• Polar representation
• Conjugate operations

Useful for engineering mathematics, electronics, and physics.

🔄 BASE CONVERSION & BITWISE

• Decimal, Binary, Octal, Hexadecimal
• Bitwise operations (AND, OR, XOR, NOT)
• Bit shifting operations

🧮 MATRIX CALCULATOR

• Matrix addition and subtraction
• Matrix multiplication
• Determinant calculation

Ideal for linear algebra and engineering courses.

📉 STATISTICS CALCULATOR

• Mean
• Median
• Mode
• Variance
• Standard deviation

⚡ PRO ENGINEERING TOOLS

Unique tools designed for engineering students and electronics hobbyists.

• Vector Calculator (3D)
dot product, cross product, magnitude, unit vector, angle

• System of Equations
solve 2×2 and 3×3 systems

• Unit Converter
18 categories including length, mass, temperature, speed, voltage and energy

• Ohm's Law Calculator
enter any two values (V, I, R, P) to calculate the rest

• LED Resistor Calculator
calculates resistor value and nearest E24 standard

• Permutation & Combination (nPr & nCr)
includes step-by-step calculation

🎓 PERFECT FOR

• Engineering students (ECE, EEE, Mechanical, Civil, Computer Science)
• JEE / NEET / GATE exam preparation
• BSc / MSc mathematics and physics
• Electronics hobbyists and makers
• School and college students

💎 PREMIUM SUBSCRIPTION

• Remove ads completely
• Unlock all advanced features
• Affordable yearly subscription

Free users can unlock tools by watching a short ad.

❓ FAQ

Does it work offline?
Yes. All calculations work completely offline.

Is it similar to a Casio 991 calculator?
It includes 991-style scientific functions plus many advanced tools.

Can ads be removed?
Yes, through a premium upgrade.

🔒 PRIVACY & SAFETY

No personal data collection.
Works fully offline.

Privacy Policy:
https://growcalculators.com/privacy-policy/

📥 Download now and experience a powerful scientific calculator built for modern learning! ## Rankings - #2,193,557 — Overall ## Permissions and access ### Permissions - `android.permission.ACCESS_ADSERVICES_AD_ID` - `android.permission.ACCESS_ADSERVICES_ATTRIBUTION` - `android.permission.ACCESS_ADSERVICES_TOPICS` - `android.permission.ACCESS_NETWORK_STATE` - `android.permission.FOREGROUND_SERVICE` - `android.permission.INTERNET` - `android.permission.WAKE_LOCK` - `com.android.vending.BILLING` - `com.android.vending.CHECK_LICENSE` - `com.google.android.gms.permission.AD_ID` - `com.grow.calculator.engineering.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` ## Similar extensions and apps - [Easy Scientific Calculator 991](https://chrome-stats.com/d/com.usman.easy_scientific_calculator_991) — 1,243 users - [Scientific Calculator](https://chrome-stats.com/d/com.lesra.scientificcalculator) — 287 users - [Scientific Calculator Pro](https://chrome-stats.com/d/com.calculatorwebtools.scientificcalculator) — 420 users - [Scientific Calculator](https://chrome-stats.com/d/com.ptolemay.calculatorio.math.scientific_calculator) — 330 users - [Scientific Calculator & Graph](https://chrome-stats.com/d/com.ampletech.scientificcalculator) — 124 users - [991 Plus—Scientific Calculator](https://chrome-stats.com/d/com.scicalc.ex) — 16,473 users - [Scientific Calculator Pro](https://chrome-stats.com/d/scientific.calculator.simplecalculator.allcalculator) — 57,702 users - [Scientific Calculator Promax](https://chrome-stats.com/d/com.lesra.scientificcalculator.pro) — 34 users - [Calculator: Scientific](https://chrome-stats.com/d/com.siamakerlab.calculator) — 80 users - [Scientific Calculator](https://chrome-stats.com/d/com.idroid.calculator) — 15,322 users - [Engineer Scientific Calculator](https://chrome-stats.com/d/com.jihg.calci) — 234 users - [Scientific Calculator](https://chrome-stats.com/d/com.talhazubair.scientificcalculator) — 77 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/com.grow.calculator.engineering)