# ‎Chemical Dictionary — 2H₂ + O₂ -> 2H₂O

> Offline chemistry reference for equations, substances, concepts, and periodic table. (iPhone/iPad app by Ban Nguyen Ngoc.)

- Source: https://appshunter.io/ios/app/chemical-dictionary/id1534256700 (this page in markdown: same URL + `.md`)
- Developer: [Ban Nguyen Ngoc](https://appshunter.io/developer/1230371083)
- Category: Education
- Price: Free
- Rating: 4.43/5 from 7 App Store ratings · 6 written reviews indexed
- Age rating: 4+
- Requires: iOS 10.0 · 74 MB
- Languages: English, Vietnamese
- Released: 2021-01-31
- Data updated: 2026-06-04
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/chemical-dictionary/id1534256700/reviews.md

## What is ‎Chemical Dictionary?

Application helps to find chemical equations, chemical substances and concepts in chemistry.

Typical features:
- Search with over 10000 equations and 3000 chemical substances
- Chemical equations are displayed detailing the substances involved and their status.
- App explains in detail more than 200 concepts used in chemistry.
- App can work well even without internet connection

In addition, the app also has other features such as:
- Questions and answers about chemical equations
- Chemical periodic table
- Soluble spreadsheet
- Metal activity range.

App supports 2 languages Vietnamese and English.

## Key features

- Search over 10,000 equations
- Search over 3,000 chemical substances
- Detailed concept explanations
- Offline functionality
- Chemical periodic table
- Solubility chart

## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/chemical-dictionary/id1534256700/reviews.md

### 5/5 — Tốt

*2025-03-11, version 1.3*

Hợp cho việc học

### 5/5 — Really well made

*2023-07-01*

Elaborate and easy to navigate

### 1/5 — Anti-virus Programs Prevent Access to this app due to know malicious activity and safety issues

*2022-05-16*

I’ve been unable to access any other part of this app (aside from the homepage) because my anti-virus/security software tagged this app as having a known/documented history malicious activity. Upon looking further into the app designer and their affiliation, I’ve discovered that this app has been developed by an entity affiliated with the Chinese Communist Party. This makes sense, as any software developed associated with the CCP would pose serious security concerns to US consumer devices. Apple should take immediate action to investigate this further and permanently remove all apps from this developer from the App Store. Doing so would show federal regulators that Apple has been working in good faith to remove potential security threats.

### 5/5 — Rất thích app 👍

*2022-01-08, version 1.3*

Lí thuyết đầy đủ , nội dung phong phú đa dạng mong app sẽ cập nhật nhiều hơn về các phương trình

### 5/5 — Awesome

*2021-08-21*

This app is soooo helpful I’m happy for this app, p.s I love the loading screen

### 1/5 — App khá tệ

*2021-03-28, version 1.1*

Tuy về phần lí thuyết các chất khá đầy đủ nhưng phần phương trình khá lỗi, thiếu nhiều phương trình cơ bản lẫn phương trình thường gặp

## Frequently asked questions about ‎Chemical Dictionary

### What is Chemical Dictionary?

Chemical Dictionary is an educational application designed to help users find chemical equations, substances, and concepts. It offers detailed explanations and includes useful tools like a periodic table and solubility chart.

### Does Chemical Dictionary work offline?

Yes, Chemical Dictionary can work well even without an internet connection, making it a convenient tool for studying anywhere.

### What kind of content does Chemical Dictionary offer?

It provides access to over 10,000 chemical equations, 3,000 chemical substances, and detailed explanations for more than 200 chemistry concepts. It also includes a periodic table and solubility chart.

### What languages does Chemical Dictionary support?

Chemical Dictionary supports two languages: Vietnamese and English.

### Is Chemical Dictionary suitable for all ages?

The app has an age rating of 4+, indicating it is suitable for a wide range of users, including younger learners and students.

### How often is Chemical Dictionary updated?

The latest version of Chemical Dictionary is 1.3, which was last updated on April 27, 2021. Information on update frequency beyond this is not provided.

### What is the user rating for Chemical Dictionary?

Chemical Dictionary has a user rating of 4.4 stars based on 7 ratings, suggesting a generally positive user experience.

### Does Chemical Dictionary have ads?

No, Chemical Dictionary does not contain advertisements.

## Version history (last 4 releases)

### 1.3 — 2021-04-27

- Add new data

### 1.2 — 2021-04-07

- Add new datas
- Fix some bugs

### 1.1 — 2021-03-17

- Add new datas
- Fix some bugs

### 1.0 — 2021-01-31

No release notes.

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All apps by Ban Nguyen Ngoc: https://appshunter.io/developer/1230371083

## Related topics

[basic chemical engg and calc](https://appshunter.io/ios/topics/basic-chemical-engg-and-calc)

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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 2026-06-04.*