# Periodic Table: Chemistry 3D — Equations, Molecules & Tools

> Advanced 3D molecular visualization and chemistry resource tool. (iPhone/iPad app by 吉帅 仇.)

- Source: https://appshunter.io/ios/app/periodic-table-chemistry-3d/id1539244235 (this page in markdown: same URL + `.md`)
- Developer: [吉帅 仇](https://appshunter.io/developer/1087837335)
- Category: Education, Utilities
- Price: Free (on sale, was $1.99)
- Rating: 5.00/5 from 2 App Store ratings · 11 written reviews indexed
- Age rating: 12+
- Requires: iOS 18.0 · 34 MB
- Languages: American English, Latin American Spanish, German (Germany), Brazilian Portuguese, Chinese (Simplified, China), French (France), Japanese
- Released: 2024-02-27
- Data updated: 2026-09-01
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/periodic-table-chemistry-3d/id1539244235/reviews.md

## What is Periodic Table?

Chemistry Explorer brings an interactive periodic table, 2D/3D molecules, an equation balancer, and 27 chemistry tools into one focused app for students, teachers, and curious minds.

PERIODIC TABLE, PERFECTED
• All 118 elements in a clean, color-coded layout
• Tap any element for properties, isotopes, spectra, and real-world uses
• Instant search by name, symbol, or atomic number

MOLECULES IN 2D & 3D
• Enter any valid SMILES to generate a structure with RDKit
• Search the curated catalog by molecule name or formula
• Calculate molecular weight, logP, TPSA, and more on device
• Rotate and explore structures in interactive 3D

OFFLINE MOLECULE DATABASE
• Search 500 source-ranked compounds for free
• Chemistry Pro unlocks all 8,000 included compounds
• On iOS 26.4 or later, Pro can download the complete 467,735-compound library through Apple

27 TOOLS FOR CHEMISTRY
• Balance equations; calculate molar mass and stoichiometry; explore pH/pOH, buffers, gas laws, kinetics, equilibrium, solutions, and more

DESIGNED FOR FOCUS
• Chemistry calculations and molecular processing run on device; no account required
• English, Français, 简体中文, 日本語, Español, Deutsch, and Português
• Optimized for iPhone and iPad

Core chemistry and reference tables are included. Chemistry Pro is available as monthly, yearly, or lifetime access and unlocks advanced calculators and live SMILES generation. Paid users of the original app keep Legacy Pro.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Key features

- 3D molecular visualization
- Atomic structure exploration
- Comprehensive periodic table
- Detailed molecular formulas
- Scientific resources database
- Chemical analysis tools

## Recent user reviews (10 of 11)

All indexed reviews: https://appshunter.io/ios/app/periodic-table-chemistry-3d/id1539244235/reviews.md

### 5/5 — 离线分子库可以有中文名吗

*2026-08-18*

离线分子库可以有中文名吗

**Developer response:** 谢谢提问,分两块说清楚:

App 内精编的 352 个分子(常见药物、维生素、神经递质、聚合物单体等)已经全部带中文名和中文简介,直接搜"阿司匹林""葡萄糖""乙酸乙酯"就能命中。

而完整分子库的 8,000 / 46 万条来自 PubChemLite 公开数据集,原始数据只有英文与 IUPAC 名称,所以目前还没有逐条中文名;这一部分可以用分子式、SMILES、InChIKey 或 PubChem CID 检索,结果同样离线可用。

给常用化合物补中文别名这件事我已经记下来了,会在后续版本里评估。如果你有特别常查的分子,欢迎告诉我具体名字,我优先补进精编库。

### 5/5 — 不错的软件

*2026-08-15*

真的厉害，化学家很好的日常软件

**Developer response:** 谢谢你的认可!很高兴它能帮上日常工作。后续会继续打磨数据和体验,有任何建议欢迎随时告诉我。

### 5/5 — 卡死

*2026-08-11*

一点工具就卡

**Developer response:** 收到，这个卡顿问题已经处理，会尽快发布更新。

### 5/5 — 这是个特别听劝的作者

*2026-08-09*

现在正在不断更新维护，有意见或者bug可以给他的开发者邮箱写意见，他会看到的。并且都有认真考虑回复。买了不吃亏买了不上当。

**Developer response:** 谢谢推荐。大家提的意见和问题我都会看，也会继续把这个应用做好。

### 5/5 — 点击全部工具卡死

*2026-07-25*

确实不错，还需要优化。

**Developer response:** 您好，感谢提供反馈，问题已经得到修复，请更新到最新版本体验

### 5/5 — 希望新增cas号搜索

*2026-07-25*

如果有cas号感觉会更方便！

**Developer response:** 感谢提供反馈，cas目前有商用授权问题，因此短期内无法添加支持，可以先用SMILE以及分子式搜索

### 1/5 — 不方便用

*2026-03-22*

不能输入分子式，根本写不了

**Developer response:** 感谢反馈，也很抱歉旧版让你无法直接输入想要的结构。全新 2.0 已发布：现在可输入任意有效的 SMILES，由设备端 RDKit 生成并计算分子结构，同时加入了 SMILES 入门教程。需要说明的是，单独的分子式可能对应多个不同结构，因此结构查询仍以 SMILES 为准。旧版付费用户更新后会自动获得终身 Pro，无需再次付费。欢迎更新体验，也期待你告诉我们是否更顺手。

### 1/5 — 僻雷

*2025-09-06*

里面的东西都不是很好用

**Developer response:** 抱歉旧版体验没有达到预期，也感谢你直接指出问题。我们已经发布全新 2.0，对界面、分子查询和实验室计算工具进行了全面重做，并加入 SMILES 输入与教程。旧版付费用户更新后会自动获得终身 Pro，无需再次付费。诚邀你再体验一次；如仍有不好用的地方，欢迎通过 App 内的支持邮件告诉我们具体环节，我们会继续改进。

### 5/5 — 不错

*2024-05-19*

日常的计算方便了很多

**Developer response:** 感谢认可！全新 2.0 已发布，日常化学计算、分子查询和使用体验都进行了全面升级，并新增 SMILES 输入与教程。旧版付费用户更新后会自动获得终身 Pro，无需再次付费。欢迎更新体验，希望新版继续帮你省下更多计算时间。

### 1/5 — 不能加个分子式？

*2024-05-19*

输入 O＝C＝O  得到的 竟然是 h2o  服气了

**Developer response:** 感谢反馈，也很抱歉旧版对全角符号的处理造成了错误结果。你输入的“O＝C＝O”使用了全角等号，标准 SMILES 应为“O=C=O”。全新 2.0 已发布，现在可由设备端 RDKit 处理任意有效的 SMILES，并加入了输入说明和教程。旧版付费用户更新后会自动获得终身 Pro，无需再次付费。欢迎更新后再次尝试。

## Frequently asked questions about Periodic Table

### What is Chemistry Calculator Master?

Chemistry Calculator Master is an advanced tool for exploring the atomic structure of molecules using 3D visualization. It provides access to a comprehensive periodic table, detailed molecular formulas, and a wealth of scientific resources to enhance learning and research.

### What devices is Chemistry Calculator Master available on?

Chemistry Calculator Master is available on iPhone, iPad, and iPod devices.

### How much does Chemistry Calculator Master cost?

Chemistry Calculator Master is a paid application, priced at $1.99.

### What is the age rating for Chemistry Calculator Master?

Chemistry Calculator Master has an age rating of 4+, making it suitable for a wide range of users.

### How often is Chemistry Calculator Master updated?

Chemistry Calculator Master was last updated on March 13, 2024, with version 1.1.1. This indicates a recent update, suggesting ongoing development and support.

### Does Chemistry Calculator Master have ads?

No, Chemistry Calculator Master does not contain advertisements. It offers an ad-free experience for users.

### What are the main educational features of Chemistry Calculator Master?

The app's main educational features include state-of-the-art 3D visualization for understanding chemical bonds and reactions, an extensive periodic table, and detailed molecular formulas. It also offers interactive educational content.

### What do users like about Chemistry Calculator Master?

Based on the available rating, users have given Chemistry Calculator Master a perfect 5.0 stars, indicating a very positive reception. This suggests users appreciate its advanced features and accuracy.

## Version history (last 5 releases)

### 2.3.1 — 2026-08-31

• Improved Search and offline molecule-library reliability, including safer asynchronous results and clearer download availability.
• Strengthened scientific evidence details for crystal structures and element media.
• Improved purchase restoration, paywall accessibility, and large-text layouts.
• Fixed edge cases around app prompts, molecule export cancellation, and background state changes.

### 2.3.0 — 2026-08-28

• Build molecules from fragments in the new Molecule Builder, with real-time valence checks, a live structure canvas, and save/history support.
• Take on a new daily molecule-building challenge from Today.
• Molecule search now recognizes displayed formulas, while equivalent SMILES structures match the same catalog entry more reliably.
• Stoichiometry, dilution, and ideal gas calculators are now free for everyone.
• Improved Lab favorites and overall reliability.

### 2.2.0 — 2026-08-19

• Every element is now open: emission spectra, the complete isotope browser, 3D shell and electron-cloud models, atomic radii, oxidation states, and ionization ladders are free for all 118.
• New Chemistry Glossary: 151 terms across nine areas, each with a definition, where it applies, related terms, and a cited source — searchable by term, symbol, or meaning.
• The Reaction Library grows from 18 to 68 reactions; every equation and classification traces to a named section of OpenStax Chemistry 2e or IUPAC.
• The periodic table adds a 32-column long-form layout and can be colored by block (s/p/d/f) or by state at room temperature.

Enjoying Chemistry Explorer? A rating takes a few seconds and helps other students find it.

### 2.1.5 — 2026-08-18

• ChemKeys now offers dedicated single, double, and triple bond keys; delta and reaction arrows remain in the quick strip.
• Live SMILES search accepts ChemKeys display notation such as C≡C and ring subscripts while preserving the text you typed.
• Search results distinguish INPUT from CANONICAL SMILES only when they differ, and molecule details link directly to the SMILES Guide.
• The Today molecule pauses while sheets are open, reducing unnecessary animation work.

### 2.1.4 — 2026-08-13

• Equations now balance exact decimal compositions, reject malformed formulas, and handle extreme input without crashing.
• All Tools opens faster on older devices: offscreen cards load lazily and the Today molecule stops rotating before navigation.
• Molecule search and Pro access stay correct across downloads, entitlement changes, foreground refreshes, and cancelled RDKit work.
• ChemKeys adds positive and negative charge signs in superscript mode, and C60 geometry is more accurate.

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All apps by 吉帅 仇: https://appshunter.io/developer/1087837335

## Related topics

[tableau periodique](https://appshunter.io/ios/topics/tableau-periodique)

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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 2026-09-01.*