Scientific Calculator Plus 991

Scientific Calculator Plus 991

NCalc & CalcES Calculator 115

12K ratings
495 reviews
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated
  • April 3, 2019
  • June 25, 2026

Features

Scientific Calculator Plus 991 screenshot #1 for iPhone
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About

This app is a powerful scientific calculator with graphing capabilities, a formula library, and a unit converter. It offers natural display input, advanced math functions for algebra, calculus, and statistics, and supports various number bases and formats.

Natural display input
Graphing module
Formula library
Unit and currency converter
Algebra and calculus tools
Matrix and vector operations
Statistical calculations
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What users say

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What's New in Scientific Calculator Plus 991

3.6.1

June 25, 2026

Thanks for using NCalc! This update includes performance improvements, stability enhancements, bug fixes, UI refinements, and compatibility updates for the latest iOS versions to ensure a smoother, more reliable experience.

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Subscription plans

Calculator yearly subscription

Access all premium features in one year.

$3.991 Year
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4

In-App Purchases

$5.99

Calculator Premium

Unlocking all premium features

User reviews

Brilliant Scientific Calculator

Fantastic tool for study and everyday practice. Still exploring its numerous modules (or features).

Like it!

It has awesome features!

calc

good

Very helpful app

I’ve been using this calculator app for a while now, and it has been really helpful. It’s fast, simple, and does exactly what I need without any hassle. Definitely deserves 5 stars!

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Developer apps

User experience

🐞

Reported Bugs

3 issues

Keyboard input stops working after switching screens

Bug

Incorrect calculation results for certain operations

Bug

App crashes on some devices after recent update

Bug

Requested Features

5 requests

Add option to change display font and color

Feature

Improve cursor control and editing capabilities

Feature

Implement auto-simplification for complex expressions

Feature

Add more handwriting font options

Feature

Expand graphing and equation solving features

Feature

FAQ

What does NCalc Scientific Calculator + do?

NCalc is a comprehensive scientific calculator that includes a graphing module, a large formula library, and a unit and currency converter. It is designed to assist students, engineers, and math enthusiasts with a wide range of mathematical tasks.

What are the key features of this calculator app?

Key features include a natural display for entering expressions as they appear in textbooks, a graphing module similar to popular graphing calculators, advanced tools for algebra, calculus, matrices, and statistics, and a built-in unit and currency converter. It also supports multiple number bases and provides a calculation history.

Is NCalc Scientific Calculator + free to use?

The application is available for free download and use, but it does contain in-app purchases. This means that while the core functionality is accessible, certain advanced features or content may require a purchase to unlock.

Who is the target audience for NCalc Scientific Calculator +?

This app is primarily designed for students, engineers, and anyone with a strong interest in mathematics. Its extensive features cater to users who require advanced calculation, graphing, and problem-solving capabilities for academic or professional purposes.

What kind of math problems can this app solve?

The app can handle a wide array of mathematical problems, including algebraic manipulations (expansion, factorization), calculus operations (derivatives, integrals, limits), solving various types of equations and inequalities, matrix and vector operations, and statistical calculations. It also supports complex number arithmetic and number base conversions.