Scientific Calculator

1.0.3

Lesra Future Apps

0.00

0 reviews

100+
Downloads

Free

Scientific calculator 991 Pro with graphing, calculus & private secure vault.

100+ downloads

About Scientific Calculator

Scientific Calculator is a tools app developed by Lesra Future Apps.

Download Statistics

Scientific Calculator has been downloaded 150 times. In the last 30 days, the app was downloaded 110 times.

User Ratings

The app has no ratings yet.

App Information

Scientific Calculator is FREE to download. The APK download size is 26.43 MB. The latest version available is 1.0.3. The last update was on May 19, 2026.

Technical Requirements

The app has a content rating of Everyone. The app has been available on Google Play May 2026.

Description

🔬 Scientific Calculator 991 Pro — The Ultimate Calculator for Students & Engineers

The most powerful scientific calculator on Android. Designed for students, engineers, and professionals who demand precision, speed, and advanced mathematical tools — all in one elegant app.

Modeled after the legendary Casio 991 series, Scientific Calculator Pro goes far beyond basic math. From simple arithmetic to symbolic calculus, graphing, matrix algebra, and equation solving — this is the only calculator you'll ever need.

━━━━━━━━━━━━━━━━━━━━━━━━━━━
🧮 MULTIPLE CALCULATOR MODES
━━━━━━━━━━━━━━━━━━━━━━━━━━━

◉ Basic Calculator — Fast, clean arithmetic with percentage, memory, and sign toggle.

◉ Scientific Calculator 991 — Full Casio-style layout with sin, cos, tan, log, ln, powers, roots, π, Euler's e, factorials, combinations (nCr), permutations (nPr), and more.

◉ Advanced Calculator — Hyperbolic functions (sinh, cosh, tanh and inverses), absolute value, inverse trig, and high-precision calculations.

◉ Graphing Calculator 84+ — Plot any function, zoom in/out, touch to trace the curve, find roots (zeros), local minimums and maximums with one tap.

◉ Calculus Calculator — Compute numeric derivatives and definite integrals. Enter any expression, set your bounds, get instant results.

◉ Matrix & Vector Calculator — 2×2 and 3×3 matrix operations: addition, multiplication, determinant, inverse, and transpose.

◉ Equation Solver — Solve quadratic and cubic equations with step-by-step coefficient input.

◉ Fraction Calculator — Add, subtract, multiply, divide fractions; simplify results; convert decimal to fraction and back.

◉ Number Theory — GCD, LCM, prime factorization, combinations, permutations, and random number generation.

━━━━━━━━━━━━━━━━━━━━━━━━
📐 MATH & PHYSICS FORMULAS
━━━━━━━━━━━━━━━━━━━━━━━━

Instant access to a comprehensive formula library:
• Algebra, Geometry, Trigonometry, Calculus
• Physics: Kinematics, Forces, Energy, Waves, Electricity
• Organized by category — find what you need in seconds
• Perfect for studying and quick reference during exams

━━━━━━━━━━━━━━━━━━━━━━━━━
🔄 UNIT CONVERTER
━━━━━━━━━━━━━━━━━━━━━━━━━

Convert between dozens of units across:
Length • Area • Volume • Mass • Speed • Temperature • Pressure • Angle
Metric ↔ Imperial — instant conversion as you type.

━━━━━━━━━━━━━━━━━━━━━━━━━
📚 TIPS & TRICKS GUIDE
━━━━━━━━━━━━━━━━━━━━━━━━━

New to scientific calculators? Built-in tips and usage guides walk you through:
• How to use every function
• Practical calculation examples
• Formulas explained clearly
• Ideal for high school, university, and engineering students

━━━━━━━━━━━━━━━━━━━━━━━━━
🔐 PRIVATE HIDDEN SECURE VAULT
━━━━━━━━━━━━━━━━━━━━━━━━━

Keep your private files safe. Behind the calculator lies a fully encrypted private vault — protected by your PIN or fingerprint.

• Store private photos, videos, and notes
• Files are hidden from your gallery and file manager
• PIN-protected with optional biometric unlock
• Auto-locks when you leave the app
• Decoy mode for extra security

Your private files never leave your device.

━━━━━━━━━━━━━━━━━━━━━━━━━
⭐ MORE FEATURES
━━━━━━━━━━━━━━━━━━━━━━━━━

✓ 100% Offline — no internet required for calculations
✓ Calculation History — review and pin your last 20 calculations
✓ Copy & paste results — tap any result to copy instantly
✓ Dark theme — easy on the eyes day and night
✓ Ad-free experience with Premium ($1.99/month)
✓ All calculator features are completely FREE

━━━━━━━━━━━━━━━━━━━━━━━━━
👑 GO PREMIUM
━━━━━━━━━━━━━━━━━━━━━━━━━

Upgrade to Premium for just $2/month and enjoy:
• Zero ads across all screens
• Managed via Google Play — cancel anytime

All features — calculators, vault, formulas, converter — are free for everyone.

━━━━━━━━━━━━━━━━━━━━━━━━━

Scientific Calculator Pro is built for students, university learners, engineers, scientists, and anyone who needs a reliable, professional-grade calculator on their Android device.

Download free.

Recent changes:
New Secure hidden locker Enjoy

Show more Show less

More data about Scientific Calculator

Price	Free to download
Total downloads	150
Recent downloads	110
Rating	No ratings
Ranking	Not ranked
Version	1.0.3
APK size	26.4 MB
Number of libraries	?
Suitable for	Everyone
Ads	Contains ads

App Performance Report

Get a detailed PDF report for Scientific Calculator with download trends, rating history, and key performance statistics — useful for competitive research or tracking your own app. Learn more

Get PDF Report — $29

Alternative downloads for the Scientific Calculator app

Scientific Calculator compared with similar apps

Common keywords of similar apps

Private Vault Free Secure Engineers Instant Results Hidden Files Pin Premium Precision Speed Casio Combinations Permutations Inverse High Function Find Tap Step Fraction Convert Physics Tips Calculators Built University Calculator Scientific Pro Calculus Students Graphing Matrix Calculations Formulas Features Advanced App Basic Math Arithmetic Algebra Equation Roots Number Converter Calculation

Keywords missing from this app

Functions Equations Operations Complex Solve Support Calc Includes Statistics History Mathematical Problems Graphs Engineering Numbers Solver Notation Trigonometric School Linear Vector Fractions Calculate Power Base Key Users Reference Section

Changelog of Scientific Calculator

Show changelog

Developer information for Lesra Future Apps

Lesra Future Apps

jdronquillo46@gmail.com

Website

Legal name:

Address:

Are you the developer of this app? Join us for free to see more information about your app and learn how we can help you promote and earn money with your app.

I'm the developer of this app

Comments on Scientific Calculator for Android

We don't have enough comments to show example comments. Please check back later.

Google Play Rankings for Scientific Calculator

This app is not ranked

Technologies used by Scientific Calculator

Scientific Calculator is requesting 19 permissions and we don't have library information (yet).
Show details

Apps on sale Apps other people are watching Today's trending apps Popular Tools Apps Top new apps

AppBrain is a directory focused on discovering great apps and games. We give statistics, rankings and search options that Google Play and the App Store don't have. All trademarks are owned by their respective owners. AppBrain doesn't offer APKs or binaries, and always lets users install the official version from Google Play or the App Store.

More apps