# ES Calculator N — For Science & Engineering

> For Science & Engineering (iPhone/iPad app by Masamori Endo.)

- Source: https://appshunter.io/ios/app/es-calculator-n/id6811758452 (this page in markdown: same URL + `.md`)
- Developer: [Masamori Endo](https://appshunter.io/developer/6798053477)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 16.0 · 26 MB
- Languages: American English
- Released: 2026-09-15
- Data updated: 2026-09-26
- User reviews in markdown: https://appshunter.io/ios/app/es-calculator-n/id6811758452/reviews.md

## What is ES Calculator N?

ESCalc N (Endo Scientific Calculator with Natural Display) is a scientific calculator app developed by Masamori Endo of Tokai University, author of "A Guide to Using Scientific Calculators for University Students and Engineers," to study the user interface (UI) of scientific calculators.

It offers features for university students, researchers and engineers to use in their studies, research and professional work, with an interface designed for intuitive operation and fewer keystrokes.

Main features
• Natural display of fractions, square roots, powers and nth roots
• CALC: repeatedly evaluate the same expression with different variable values
• Key physical constants based on CODATA 2022
• Trigonometric, inverse trigonometric, hyperbolic, logarithmic and exponential functions
• Degrees, minutes and seconds input and display
• Conversion between rectangular and polar coordinates
• Memory storage and recall, plus user-defined constants
• Recall calculation history and edit previous expressions
• A choice of CASIO-style and SHARP-style function input

We welcome your comments and feedback as we work to make scientific calculators easier to use.


## Version history (last 4 releases)

### 1.0.3 — 2026-09-25

• Fixed square, reciprocal, and factorial calculations applied after completing a power or an nth root.
• Improved the display of squares and reciprocals applied after powers and nth roots.

### 1.0.2 — 2026-09-24

• Improved exponent placement after fractions and roots.
• Fixed cursor alignment after tall expressions and parentheses.
• Fixed cursor navigation out of functions within fractions, allowing editing to continue inside the fraction.

### 1.0.1 — 2026-09-18

• Parentheses now expand to fit fractions and roots, with improved exponent placement.
• Fixed unwanted closing parentheses appearing during cursor navigation.
• Fixed STO handling and repeated CALC calculations with Pol/Rec.
• Commas can now be inserted within expressions.

### 1.0.0 — 2026-09-16

No release notes.

## More apps by Masamori Endo

- [ESCalc Scientific Calculator](https://appshunter.io/ios/app/escalc-scientific-calculator/id6798053475)

All apps by Masamori Endo: https://appshunter.io/developer/6798053477

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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 2026-09-26.*