# Panecal Scientific Calculator — For engineers and students

> Scientific calculator app for formula input, editing, and calculation with history. (iPhone/iPad app by Noriyasu Kutsuzawa.)

- Source: https://appshunter.io/ios/app/panecal-scientific-calculator/id668500803 (this page in markdown: same URL + `.md`)
- Developer: [Noriyasu Kutsuzawa](https://appshunter.io/developer/668500806)
- Category: Utilities, Business
- Price: Free
- Rating: 4.80/5 from 1,947 App Store ratings · 670 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 34 MB
- Languages: American English, French (France), German (Germany), Indonesian, Italian, Japanese, European Portuguese, Russian, Chinese (Simplified, China), European Spanish and 1 more
- Released: 2013-07-09
- Data updated: 2026-08-29
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/panecal-scientific-calculator/id668500803/reviews.md

## What is Panecal Scientific Calculator?

[Description]
Panecal is a scientific calculator app that lets you display and modify formulas. By allowing you to review your formulas as you type, it helps prevent typos and calculation errors. You can also reuse past formulas and utilize variable memory to recalculate by changing only specific values.

The on-screen cursor allows you to quickly navigate to where you want to edit by tapping or using the arrow keys. Featuring a powerful, flexible, and intuitive user interface, the app also supports swiping to scroll through formulas and long-pressing to copy and paste.

[Features]
- Recalculate easily using past formulas
- Effortless editing with cursor navigation and screen swiping
- Copy and paste formula text
- History log for both formulas and calculation results
- Binary, octal, decimal, and hexadecimal calculation and conversion (Up to 32-bit)
- M+/M- memory functions and variable memory (A–F)
- Support for arithmetic operations, inverse trigonometric functions, logarithmic functions, power/root functions, factorials, absolute values, percentage calculations, modulo operations, and polar/cartesian coordinate conversion
- Multiple angle units (DEG, RAD, GRAD)
-Multiple display formats: Normal (standard), Fix (fixed decimal), Sci (significant figures), and Eng (engineering notation in multiples of 3)
-Customizable decimal point characters and grouping separators

[Disclaimer]
Please note that Appsys accepts no responsibility for any damages, lost profits, or claims from third parties arising from the use of this software.

## Key features

- Formula editing with cursor and swipe
- Reuse past formulas
- Variable memory for calculations
- Binary, octal, decimal, hexadecimal conversion
- M+/M- memory functions
- Angle unit settings (DEG, RAD, GRAD)

## What do users think of Panecal Scientific Calculator?

Overall sentiment: positive

**Pros**

- 👍 Great button layout
- 👍 Intuitive and user-friendly
- 👍 Powerful scientific functions
- 👍 Convenient display and history
- 👍 Useful for various fields (construction, engineering, etc.)

**Cons**

- 🐛 Calculation errors in some cases
- 🐛 Glitches and crashes reported
- 🔍 Lack of engineering prefixes
- 📺 Ads can be intrusive
- 🔍 Suboptimal button placement and sizing

**Commonly reported bugs**

- Inability to switch back from Bin mode
- Calculation history not scrolling properly
- Inconsistent behavior with certain operations

**Most requested features**

- Unit conversion tools
- Customizable font and icon
- Ability to rotate screen
- More advanced programming features
- Improved order of operations handling

## Recent user reviews (10 of 670)

All indexed reviews: https://appshunter.io/ios/app/panecal-scientific-calculator/id668500803/reviews.md

### 5/5 — プラス購入しました

*2026-08-03*

初めてのiPhoneから今日まで延々と無料で使わせてもらいました。現役引退となり使用機会も少なくなりますので、遅くなりましたがプラス購入させていただきました。

### 1/5 — Many advantages

*2026-08-02*

Many advertisers

### 1/5 — Annoying ads now in app

*2026-07-27, version 7.7.2*

This was a nice app until the integration of Google ads into it now they out flash in front of you while you’re trying to read numbers and it’s irritating.  Full of porn

### 5/5 — Shantanu's Calculator

*2026-07-22*

Good

### 2/5 — 横表示が出来なくなった

*2026-07-01*

以前は出来ていた横画面表示が出来なくなった様で、使い勝手が少し悪くなりました。
広告も以前より大分うるさくて目障りになりました。
無料で使用しているので、仕方の無い部分かとは思いますが、使いやすいだけに残念です。

### 5/5 — Most practical calculator

*2026-06-12, version 7.7.1*

This app is stable and easy to use for your project.

### 5/5 — Good

*2026-05-26*

Very satisfied

### 5/5 — Muy útil

*2026-05-20, version 7.7.0*

Me gusta por qué guarda historial y se pueden tener varios cálculos a la vez

### 1/5 — 計算結果がスマホとアイパッドで異なります

*2026-05-19*

963^2-214^2を計算するとスマホでは881,573と正しい結果になるのですが、アイパッドでは42,469,790,724と2項の積になります。

**Developer response:** レビューありがとうございます。Ver.7.7.0で発生したこの不具合をVer.7.7.1で修正しました。ご報告、ありがとうございました。

### 5/5 — Goodapp

*2026-05-12, version 7.6.6*

Goodapp Goodjob 
I love it

## Frequently asked questions about Panecal Scientific Calculator

### What does the Panecal Scientific Calculator app do?

This app is a scientific calculator that allows you to input and modify formulas while checking them. It helps prevent typing errors and calculation mistakes. You can also reuse past formulas and use variable memory to change specific values for recalculations.

### What are the key features of this calculator app?

Key features include re-calculation using past formulas, easy editing with cursor operation and screen swiping, copy and paste functionality for formulas, formula and answer history tables, support for binary, octal, decimal, and hexadecimal calculations (up to 32 bits), M+/M- memory functions, and variable memory (A-F).

### Is this app free to use?

Yes, the app is free to use. However, it does display advertisements. There are no in-app purchases or subscription fees associated with its use.

### What kind of calculations can I perform with this app?

The app supports a wide range of calculations including arithmetic operations, inverse trigonometric functions, logarithmic functions, power functions, power root functions, factorials, absolute values, percent calculations, modulo calculations, and polar/cartesian coordinate conversions. It also handles different angle units (DEG, RAD, GRAD) and result formats (Normal, Fix, Sci, Eng).

### Who is the target audience for this app?

This app is designed for engineers and students who need a powerful and intuitive scientific calculator. Its features for formula editing, history, and variable memory make it suitable for complex academic and professional calculations.

## Version history (last 5 releases)

### 7.7.3 — 2026-08-27

- Minor bug fixes and improvements.

### 7.7.2 — 2026-06-23

- Fix minor bugs.

### 7.7.1 — 2026-05-20

- Fixed an issue in power calculations.

### 7.7.0 — 2026-05-14

- Fixed a minor problem.
- Updated libraries.

### 7.6.6 — 2025-07-15

- Fixed abs() function.
- Updated libraries.

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## More apps by Noriyasu Kutsuzawa

- [Panecal Plus Sci. Calculator](https://appshunter.io/ios/app/panecal-plus-sci-calculator/id672649451)
- [Calculator PanecalST Plus](https://appshunter.io/ios/app/calculator-panecalst-plus/id702784955)
- [Calculator PanecalST](https://appshunter.io/ios/app/calculator-panecalst/id702821889)
- [Figure calculator ShapeInfo](https://appshunter.io/ios/app/figure-calculator-shapeinfo/id914310828)
- [ShapeInfo Plus](https://appshunter.io/ios/app/shapeinfo-plus/id983851989)

All apps by Noriyasu Kutsuzawa: https://appshunter.io/developer/668500806

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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 2026-08-29.*