# Chemicalculator — Molecule Formula Calculator

> Molecule Formula Calculator (iPhone/iPad app by Tetsuya Nishikawa.)

- Source: https://appshunter.io/ios/app/chemicalculator/id1454906653 (this page in markdown: same URL + `.md`)
- Developer: [Tetsuya Nishikawa](https://appshunter.io/developer/1454906652)
- Category: Productivity, Utilities
- Price: $1.99
- Age rating: 4+
- Requires: iOS 12.0 · 12 MB
- Languages: English, Japanese
- Released: 2019-03-09
- Data updated: 2026-06-22
- User reviews in markdown: https://appshunter.io/ios/app/chemicalculator/id1454906653/reviews.md

## What is Chemicalculator?

Weight and Mass Spectroscopic chart of the molecular!

And you can register short names of the formula frequently you use.
Once you register '(H2N)CH(COOH)(CH2COOH)' as 'Asp', you can calculate it with typing just '(Asp)'.

This is the useful app for mass spectroscopic analysis.


## Version history (last 5 releases)

### 1.3.1 — 2024-08-26

- optimized internal structure.  ( adapt to Xcode 15.4 )

### 1.3.0 — 2023-05-14

- adapt to dark theme

### 1.2.0 — 2023-05-12

- update design.

### 1.1.1 — 2020-01-18

Thank you for daily use. The Features shown below has been released!

- Update settings view design.
- Fixed bugs using iPad.

### 1.1 — 2019-03-21

- The amount of registrable aliases raise to 100 from 3.
- Bug fixation around calculation with formulas containing nested brackets.

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## More apps by Tetsuya Nishikawa

- [MeowMeowEngine](https://appshunter.io/ios/app/meowmeowengine/id1462656653)
- [tatetsu](https://appshunter.io/ios/app/tatetsu/id1611326705)

All apps by Tetsuya Nishikawa: https://appshunter.io/developer/1454906652

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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 2026-06-22.*