# jCalc – Scientific Calculator — History, Fractions, Functions

> A powerful, easy-to-use scientific calculator for complex math and conversions. (iPhone/iPad app by Jon Ericksen.)

- Source: https://appshunter.io/ios/app/jcalc-scientific-calculator/id885770968 (this page in markdown: same URL + `.md`)
- Developer: [Jon Ericksen](https://appshunter.io/developer/706765908)
- Category: Utilities, Education
- Price: Free
- Rating: 4.60/5 from 247 App Store ratings · 81 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.1 · 2 MB
- Languages: British English, Catalan, Croatian, Czech, Danish, Dutch, Finnish, Canadian French, German (Germany), Greek and 21 more
- Released: 2014-06-25
- Data updated: 2026-08-13
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/jcalc-scientific-calculator/id885770968/reviews.md

## What is jCalc?

Simple. Powerful. Easy to Use.

jCalc is a scientific calculator designed for students, teachers, and professionals. Whether you're solving fractions, decimals, or advanced equations, jCalc makes it easy and intuitive.

Key Features:

Fractions and Decimals Made Easy:
 • [1] [.] [2] = 1.2
 • [1] [n/d] [2] = 1/2
 • [1] [n/d] [2] [Nn/d] [3] = 1_2/3

Flexible Answer Formats:
 • Display up to 16 decimal places
 • Results in irrational, rational, decimal, or scientific format
 • Trigonometric results in radians, degrees, or gradians

Smart Conversions:
 • [Ab/c] ⟺ [a/b] ⟺ [a.b] ⟺ [a.b×10^c]

Button Functions You’ll Love:
 • [del]: Delete the last entry
 • [C]: Clear the current expression
 • [AC]: Hold [C] to clear all entries
 • [sci]: Switch to scientific mode
 • [2nd]: Access advanced functions

Advanced Math Features:
 • Memory Functions: Recall previous answers with [ans]
 • Auto Parentheses: No manual typing needed
 • Percent Button: Simplify percentage calculations
 • Scientific Notation: Effortless input for large numbers
 • π Button: Quick access to π

Comprehensive Math Tools:
 • Roots, powers, and exponents
 • Logarithms (including custom bases)
 • Trigonometric and hyperbolic functions ([hyp])
 • Permutations, combinations, and factorials ([prob])

Discover a calculator that’s as simple as it is powerful. Happy calculating!

## Key features

- Fractions and decimals calculations
- Flexible answer formats
- Smart conversions
- Advanced math functions
- Memory recall
- Auto parentheses

## What do users think of jCalc?

Overall sentiment: positive

**Pros**

- 👍 Free and ad-free calculator app
- 🎨 Multiple customizable themes and color schemes
- 📜 Running tape/history feature to review calculations
- 🔢 Fraction, decimal, and mixed number support
- ⚡ Fast and efficient performance
- 🧮 Easy-to-use interface with large buttons
- 🎯 Great for students (GCSE, A-levels, algebra, geometry)
- 📱 Works well in split-screen mode
- 🌙 Dark theme with high contrast options
- 🔧 Scientific calculator capabilities

**Cons**

- 🐛 Display rendering issues with character visibility
- 🐛 App freezing and crashing problems
- 📱 Landscape mode not working on iPhone
- 🔌 Limited button size for users with larger fingers
- 📢 Intrusive ad banner at top of screen
- ⚠️ Fraction buttons not functioning properly
- ❌ Missing memory function
- 🔄 Inconsistent behavior across iOS updates
- 🎨 Non-conventional design styles can be distracting
- ⏱️ Lacks tutorial for new users

**Commonly reported bugs**

- Display characters not rendering correctly (about 1/4 of characters missing)
- Fraction buttons not working as intended
- iPhone landscape mode does not rotate or display split view
- App freezes during use
- Character display issues with numbers 0-9 appearing incomplete
- Compatibility issues with latest iOS updates
- Fraction input only accepts single digits before conversion

**Most requested features**

- Widget support for home screen
- Scientific calculator functions (sin, cos, tan, square root, squaring)
- Original version 1.0 color scheme option
- Running tape format in newer versions
- Screen rotation lock for landscape mode
- Memory function for calculations
- More conventional calculator design option
- Tutorial or onboarding guide
- Support for iPhone Max devices

## Recent user reviews (10 of 81)

All indexed reviews: https://appshunter.io/ios/app/jcalc-scientific-calculator/id885770968/reviews.md

### 5/5 — Free

*2026-05-04, version 2.3*

Actual free calc app. Good for gcse a levels

### 5/5 — Calculadora

*2026-02-25, version 2.3*

Excelente Calculadora

### 5/5 — Very nice app + Suggestion

*2025-11-02, version 2.3*

I reallly like the app. It has cool designs and everything about it is very nice. It would be cool if I had a widget since I enjoy this more than the Apple calculator and would like a widget to replace the Apple one. (This is a student from 4th period AP precalc this year)

### 5/5 — Every good

*2025-05-28, version 2.3*

Very good

### 5/5 — Really good calculator, even better teacher

*2024-10-11, version 2.2*

Has everything i need to pass my algebra 2 class. Thanks Mr. Ericksen!

### 5/5 — YOU SHOULD DOWNLOAD

*2024-10-10, version 2.2*

Very good for my school and it helped all of my friends and I

### 3/5 — touches trop petite

*2024-09-22, version 2.2*

les touches sont trop petit pour les grands doigts

### 5/5 — Best calculator

*2024-01-24, version 2.2*

Best calculator for all math problems. Creator seems to be a good app developer.

### 5/5 — Great, easy to use

*2024-01-19, version 2.2*

Love the dark theme and easy to read interface.

### 3/5 — Banner

*2023-10-29, version 2.1.1*

This is a large ad banner at the top, otherwise it seems to do the job. Not a fan of the different style proposed, there should be a least one looking more conventional, less distracting. And why is there no Memory function?

## Frequently asked questions about jCalc

### What does jCalc do?

jCalc is a scientific calculator designed to simplify complex mathematical calculations. It handles fractions, decimals, advanced equations, and provides flexible answer formats. It's suitable for students, teachers, and professionals needing a powerful tool for their work.

### What are the key features of jCalc?

Key features include easy handling of fractions and decimals, flexible answer formats (up to 16 decimal places, various result types), smart conversions between formats, and advanced math tools like roots, powers, logarithms, trigonometric functions, and probability functions.

### Is jCalc free to use?

Yes, jCalc is a free application. There are no in-app purchases or advertisements mentioned, indicating it is entirely free for users.

### What kind of math problems can jCalc solve?

jCalc can solve a wide range of math problems, including those involving fractions, decimals, roots, powers, exponents, logarithms (with custom bases), trigonometric and hyperbolic functions, permutations, combinations, and factorials. It also supports scientific notation and percentage calculations.

### Who is jCalc designed for?

This app is specifically designed for students, teachers, and professionals who require a robust and user-friendly scientific calculator. Its comprehensive features make it suitable for academic studies, teaching, and professional applications involving complex calculations.

## Version history (last 5 releases)

### 2.3 — 2025-01-13

• Improved performance and responsiveness for a smoother user experience.

### 2.2 — 2024-01-17

• Performance improvements.

### 2.1.1 — 2022-03-18

• Performance improvements.

### 2.1 — 2022-03-06

• Icon and theme updates.

### 2.0.1 — 2022-02-01

• Performance improvements.

## Apps similar to jCalc

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Calculator +](https://appshunter.io/ios/app/calculator-plus/id351815470) | 4.6 (9,595) | Free | Utilities |
| [Calculator₊](https://appshunter.io/ios/app/calculator/id398129933) | 4.7 (1,726,271) | Free | Utilities |
| [Calculator #](https://appshunter.io/ios/app/calculator/id458535080) | 4.6 (35,862) | Free | Utilities |
| [Panecal Scientific Calculator](https://appshunter.io/ios/app/panecal-scientific-calculator/id668500803) | 4.8 (1,918) | Free | Utilities |
| [Calculator HD Pro Lite](https://appshunter.io/ios/app/calculator-hd-pro-lite/id571121141) | 4.6 (51,312) | Free | Utilities |
| [Calculator⁼](https://appshunter.io/ios/app/calculator/id487127942) | 4.6 (358,262) | Free | Utilities |

## Related topics

[calculadora alicia](https://appshunter.io/ios/topics/calculadora-alicia)

---

*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 2026-08-13.*