# Calculator ∞ — The Best Scientific Calculator

> Advanced scientific and graphing calculator with AI-powered problem solving. (iPhone/iPad app by Incpt.Mobis.)

- Source: https://appshunter.io/ios/app/calculator/id458535809 (this page in markdown: same URL + `.md`)
- Developer: [Incpt.Mobis](https://appshunter.io/developer/445261166)
- Category: Education, Utilities
- Price: $5.99 with in-app purchases
- Rating: 4.70/5 from 6,306 App Store ratings · 417 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.1 · 46 MB
- Languages: American English, Arabic, Dutch, Canadian French, German (Germany), Italian, Japanese, Korean, Brazilian Portuguese, Russian and 5 more
- Released: 2011-09-16
- Data updated: 2026-08-26
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/calculator/id458535809/reviews.md

## What is Calculator ∞?

◉ Top Paid Educational Apps in US, UK, AUS, GER,...
◉ QAppReview.com Rated 9/10
◉ Users Reviewed: "Top Class Calculator !"

The BEST Alternative to Graphing TI-83, TI-84, TI-89, Casio FX, Sharp EL,...

Calculator Infinity (∞) – The sleek, multi-function calculator for iPhone/iPad is proud to offer a variety of features to satisfy all ranges of customers: The App possesses a powerful math core and algebra engine with mathematical display support, making it a viable tool for everyone from those looking for basic calculation to more advanced users, such as scientific computation, programmers, engineers, and math students. Calculator ∞ makes available everything you need – including a user manual and tutorial video clips – so you can master the app in a matter of minutes!

◉ Official Website: http://iPhoneCalculator.com

◉ ADVANCED FEATURES:
▸ Step-by-step solution (Hints)
▸ Math Photos Solver *
▸ Handwriting Recognition *
▸ Math Problem Solver (AI) *
▸ Well Organized of Functions

◉ GENERAL FEATURES:
▸ Universal Calculator App ¹
▸ Support Multitasking (iPad)
▸ Support Wireless KB²
▸ Mathematical Display
▸ Edit & Export Expression/Result
▸ History Tape View
▸ Basic Calculations (+, -, x, ÷, %, Abs,...)
▸ Advanced Functions (Sin, Cos, Ln, X!, ^, √,…)
▸ Memory Variables (Including X,Y,Z,M)
▸ F(x) Customize Functions (F1, F2, F3)
▸ Unit Converter (40 Categories, 1000+ Units)
▸ Over 40 Common Constants
▸ Fraction and Degree/Angle Calculation
▸ Numeric Integral & Derivative Calculation
▸ Dual Skins (Silver Light & Carbon+)
▸ No Ads

◉ ALGEBRA FEATURES:
▸ Big Integer & Rational Number (Up to 500!)
▸ Expand and Factor Polynomials
▸ Indefinite integral & Derivative
▸ Two-side Limit
▸ Taylor Series Expansion
▸ Hints and Solutions

◉ 2D GRAPH:
▸ Simultaneous Graph
▸ Smooth Zoom & Transformation
▸ Support F(X,Y) = 0. E.g. Sin(X) + Cos(Y) = 0.
▸ Conic Equations (Parabola, Hyperbola, Ellipse)
▸ Get Intersections, Min, Max & Special Points

◉ CLOUD COMPUTING:
▸ Advanced Two-side Limit
▸ Advanced Indefinite Integral
▸ General Equations (Accurate Roots)

◉ EQUATIONS SOLVERS:
▸ General Equations (Numerical Roots)
▸ Quadratic & Cubic Equations
▸ System of Linear Equations (2 & 3 Unknowns)

◉ REGRESSION & STATISTICS:
▸ Modify & Sort Data
▸ Single Variable Statistics
▸ Linear, Quadratic, Power Regression
▸ Logarithmic & Exponential Regression

◉ COMPLEX CALCULATION:
▸ Polar & Rectangular Notation
▸ Argument, Conjugate Function
▸ Trigonometry Functions
▸ Logarithmic & Exponential Functions

◉ MATRIX/VECTOR MODE:
▸ Support Up to 7x7 Matrix
▸ Support Complex Numbers
▸ Cross, Dot Product
▸ Det, Inverse, Transpose
▸ Cramer’s Rule Solver
▸ Numerical Real Eigenvalues

◉ NUMBER BASE-N MODE:
▸ 15 Different Bases
▸ Support Up to 32 Bits Integer
▸ Binary Operation (NOT, OR, XOR, 2’S, …)

◉ MULTIPLE LANGUAGES:
▸ English, Spanish, German,
▸ French, Japanese, Chinese

(*) In-App-Purchase is required
¹: Include iPhone SE, PRO, PRO-MAX, iPad...
²: Standard English KB

Calculator ∞ is not only the Calculator
IT IS THE MUST HAVE CALCULATOR !!!

We love your feedback, Thanks a lot !
Please contact us for questions, bugs/crash reports, conversion requirements, etc....

Terms of Service:
https://iphonecalculator.com/terms-of-service/

## Key features

- Step-by-step solution hints
- Math Photos Solver
- Handwriting Recognition
- AI Math Problem Solver
- 2D Graphing
- Unit Converter
- Matrix/Vector Mode

## Pricing and in-app purchases

Base price: $5.99.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Unlimited OCR/Writing 1 Month | $3.49 | per month |
| Unlimited OCR/Writing 3 Months | $8.99 | per 3 months |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 900 AI Recognition & Queries | $1.99 | one-time |
| 400 AI Recognition & Queries | $0.99 | one-time |


## Recent user reviews (10 of 417)

All indexed reviews: https://appshunter.io/ios/app/calculator/id458535809/reviews.md

### 5/5 — Must have

*2026-08-09, version 7.1*

There is more than you think in this calculate.

### 5/5 — Thanks

*2026-06-30, version 7.1*

The best calculator in the world

### 5/5 — Full Range

*2026-06-26, version 7.1*

Worth the cost, especially if you want every possible range of calculators. Scientific, graphing, etc.

### 5/5 — Ótimo

*2026-06-16*

Uma calculadora bem completa muito boa!

### 5/5 — The BEST calculator EVER!

*2026-05-25, version 7.1*

'Nuff said. It's the best. Get it. Period. Five year later, still best. Get it. Now. Ten years later; still the best and getting better.

### 5/5 — Superior Calculator

*2026-05-20, version 7.1*

Given the security risk with being able to unlock iPhone with default calcualtor, deleted, and researched for a reliable calculator. Best phone calcualtor ever- used it to help spouse through college math course…. Better functionality than a scientific calculator… perfect

### 5/5 — ♾️♾️♾️♾️♾️♾️♾️♾️♾️♾️♾️♾️♾️♾️♾️♾️♾️♾️♾️♾️♾️♾️♾️♾️♾️♾️♾️♾️♾️♾️♾️♾️♾️

*2026-05-01*

いままで使った電卓で一番使いやすかったです。ありがとうございます😊
！！！！！！！！！

### 5/5 — very useful

*2026-04-23, version 7.1*

👍👍👍

### 5/5 — The best calculator

*2026-04-15, version 7.1*

This is by far the best calculator. It is totally worth the purchase. Please make a Windows app.

### 5/5 — Great app!

*2026-04-02*

I’ve been using this app for the last 10 years without any bug. Great job, developers! Congratulations!!

## Frequently asked questions about Calculator ∞

### What does Calculator ∞ do?

Calculator ∞ is a multi-function calculator app designed for a wide range of users, from basic calculations to advanced scientific computation. It features a powerful math core and algebra engine, supporting mathematical display and offering features like step-by-step solutions, handwriting recognition, and 2D graphing.

### What are the key features of Calculator ∞?

Key features include step-by-step solutions, a math photo solver, handwriting recognition, an AI math problem solver, and comprehensive 2D graphing capabilities. It also offers a unit converter, matrix/vector mode, and advanced algebra functions.

### How much does Calculator ∞ cost?

The app is free to download and use for basic functions. However, advanced features such as the Math Photos Solver, Handwriting Recognition, and Math Problem Solver (AI) require an in-app purchase.

### What devices is Calculator ∞ compatible with?

Calculator ∞ is a universal app designed for iPhone and iPad, supporting multitasking on iPads. It is compatible with various iPhone and iPad models, including the latest Pro versions.

### Who would benefit from using Calculator ∞?

This app is ideal for students studying mathematics, science, or engineering, as well as professionals like programmers and engineers who require advanced calculation tools. Its comprehensive features cater to both basic and complex mathematical needs.

## Version history (last 5 releases)

### 7.1 — 2026-03-12

▸ Support F(X,Y) = 0. E.g. Sin(X) + Cos(Y) = 0.
▸ Math Problem Solver
▸ Stability Improvements
▸ Minor Bug Fixes.

### 7.0.3 — 2025-05-30

▸ Support F(X,Y) = 0. E.g. Sin(X) + Cos(Y) = 0.
▸ Math Problem Solver
▸ Stability Improvements
▸ Minor Bug Fixes.

### 7.0.1 — 2025-05-21

▸ Support F(X,Y) = 0. E.g. Sin(X) + Cos(Y) = 0.
▸ Math Problem Solver
▸ Stability Improvements
▸ Minor Bug Fixes.

### 7.0 — 2025-05-02

▸ Support F(X,Y) = 0. E.g. Sin(X) + Cos(Y) = 0.
▸ Math Problem Solver
▸ Stability Improvements
▸ Minor Bug Fixes.

### 6.1 — 2024-08-25

▸ Support F(X,Y) = 0. E.g. Sin(X) + Cos(Y) = 0.
▸ Stability Improvements
▸ Minor Bug Fixes.

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## More apps by Incpt.Mobis

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All apps by Incpt.Mobis: https://appshunter.io/developer/445261166

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*