# Calculator # — Scientific Calculator

> A free, multi-function scientific and graphing calculator with advanced math features. (iPhone/iPad app by Incpt.Mobis.)

- Source: https://appshunter.io/ios/app/calculator/id458535080 (this page in markdown: same URL + `.md`)
- Developer: [Incpt.Mobis](https://appshunter.io/developer/445261166)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 4.60/5 from 35,876 App Store ratings · 463 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.1 · 57 MB
- Languages: American English, Arabic, Dutch, French (France), German (Germany), Italian, Japanese, Korean, European Portuguese, Russian and 5 more
- Released: 2011-08-31
- Data updated: 2026-08-28
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/calculator/id458535080/reviews.md

## What is Calculator #?

◉ Over 11,000,000 Downloads Worldwide
◉ Top Free Utilities Apps in US, UK, AUS, CAN, GER,...
◉ Rated & Reviewed on ILoveFreeSoftware.com

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

Calculator # – The free, multi-function calculator for iPhone/iPad is proud to offer a variety of features to satisfy wide 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, 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:
▸ Math Photos Solver *
▸ Handwriting Recognition *
▸ Math Problem Solver (AI) *

◉ GENERAL FEATURES:
▸ Universal Calculator App
▸ Support All the Latest Devices ¹
▸ Support Multitasking (iPad)
▸ Support Wireless KB ²
▸ Mathematical Display
▸ Edit & Export Expression/Result
▸ History Tape View
▸ Basic Calculations (+, -, x, ÷, %, Abs,...)
▸ Advanced Functions (Sin,Cos,Ln,X!, ^, √,…)
▸ 14 Memory Variables (Including X,Y,Z,M)
▸ Assignment Operator
▸ F(x) Customize Functions (F1 Only)
▸ Fraction and Degree/Angle Calculation
▸ Numeric Integral Calculation
▸ Dual Skins (Silver Light & Carbon+)

◉ ALGEBRA FEATURES:
▸ Big Integer & Rational Number (Up to 30!)
▸ Expand and Factor Polynomials
▸ Basic Indefinite integral

◉ EQUATIONS SOLVERS:
▸ Quadratic Equations
▸ System of Linear Equations (2 Unknowns)

◉ 2D GRAPH:
▸ Snap to Points
▸ Smooth Zoom & Transformation
▸ Support F(X,Y) = 0. E.g. Sin(X) + Cos(Y) = 0.

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

(*) In-App-Purchase is required
¹: Include iPhone 6/6S+ HD Retina Display
²: Standard English KB

We love your feedback, Thanks a lot !

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

## Key features

- Math Photos Solver
- Handwriting Recognition
- AI Math Problem Solver
- Mathematical Display
- Equation Solvers
- 2D Graphing
- Algebraic Functions

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| PRO Upgrade 1 Month | $1.49 | per month |
| PRO Upgrade 3 Months | $2.99 | per 3 months |
| PRO + Recognition 1 Month | $4.99 | per month |
| PRO + Recognition 3 Months | $11.99 | per 3 months |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 600 AI Recognition & Queries | $1.99 | one-time |
| 250 AI Recognition & Queries | $0.99 | one-time |


## What do users think of Calculator #?

Overall sentiment: mixed

**Pros**

- 👍 Easy to use
- 🚀 Powerful functionality
- 💡 Helpful for math classes
- ⭐ Great for students
- 👌 Works like a real calculator

**Cons**

- 🔍 Confusing interface after update
- 📢 Too many intrusive ads
- 💰 Paywall for advanced features
- 🐛 Incorrect calculations
- 🔇 Loud audio ads

**Commonly reported bugs**

- Crashes when trying to use certain functions
- Handwriting recognition not working reliably
- Inability to input negative numbers

**Most requested features**

- Add option to turn off animation
- Improve ad placement to avoid obstructing usage
- Provide more transparency on paid features

## Recent user reviews (10 of 463)

All indexed reviews: https://appshunter.io/ios/app/calculator/id458535080/reviews.md

### 5/5 — Good

*2026-08-25, version 7.1*

8

### 1/5 — 広告がうっとおしい。

*2026-07-17*

アップデートされて広告が増えて非常に使いづらくなった。また、数式が入力される画面が小さくなって見づらい

### 1/5 — Premium Subscription Is POOR

*2026-07-11, version 7.1*

Very Poor App Due to Ads Recur Even On My Paid Subscription!

### 1/5 — Terrible Experience

*2026-07-09, version 7.1*

A calculator should never have popup ads. Disgusting.

### 5/5 — Just simple and Easy

*2026-07-02, version 7.1*

Does the job no fuss, easy UI

### 5/5 — Calculator

*2026-06-29, version 7.1*

Allows me access to some very useful functions for long term wealth planning

### 2/5 — Too many pop upads

*2026-06-29, version 7.1*

Too many pop up ads

### 5/5 — Electronic Engineering

*2026-06-16, version 7.1*

This is a very useful, to my academic and professional work as system designer E power. Thanks to all build this apps.

### 1/5 — No thank you for Adult Content Ads!

*2026-06-05, version 7.1*

Temu was being explicit!

### 3/5 — Good functions, Too many ads

*2026-05-27, version 7.1*

Recommend going with the premium version. When doing important calculations, you don’t want to be stopped from doing work due to ads.

## Frequently asked questions about Calculator #

### What does Calculator   do?

Calculator # is a multi-function calculator app that provides basic, scientific, and algebraic calculations. It also offers advanced features like a math photo solver, handwriting recognition, equation solvers, and 2D graphing capabilities.

### What are the key features of Calculator  ?

Key features include a math photo solver, handwriting recognition, an AI math problem solver, mathematical display, history tape view, basic and advanced functions, algebraic capabilities, equation solvers, and 2D graphing. Some advanced features require in-app purchases.

### Is Calculator   free to use?

The app is free to download and offers a wide range of general and algebraic features. However, advanced features such as the Math Photos Solver, Handwriting Recognition, and Math Problem Solver (AI) require an in-app purchase to unlock.

### What devices is Calculator   compatible with?

The app is a universal calculator designed for iPhone and iPad, supporting all the latest devices and HD Retina displays. It also supports multitasking on iPad and wireless keyboards.

### Who would benefit from using Calculator  ?

This app is ideal for students, engineers, mathematicians, and anyone who needs a powerful calculator for complex calculations, problem-solving, and graphing. Its comprehensive features cater to both basic users and advanced scientific computation 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.

### 7.0.4 — 2025-06-21

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

### 7.0.3 — 2025-06-16

▸ 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.

### 6.0.1 — 2024-04-06

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

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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 2026-08-28.*