# Molecular Constructor vs Chemistry Master Periodic

The clearest difference is rating: Chemistry Master Periodic at 4.9 against Molecular Constructor's 4.0. Chemistry Master Periodic also leads on update cadence (every 2 months vs every 12 months) and review sentiment (90% vs 76%). Molecular Constructor's advantage is in-app purchases (none vs 8) and ads (none vs shown). On price, ratings volume and device support there is nothing between them.

Both are free to download. Chemistry Master Periodic sells 7 in-app purchases, starting at $3.99 per month. Molecular Constructor asks for nothing beyond the download.

Chemistry Master Periodic holds the better App Store score, 4.9 against 4.0. Both are backed by a comparable volume of ratings — 65 and 51 respectively. Written reviews point the same way: 76% of Molecular Constructor's written reviews are positive against 90% of Chemistry Master Periodic's.

Molecular Constructor ships an update every 12 months, Chemistry Master Periodic every 2 months. The most recent releases landed on November 4, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | Molecular Constructor | Chemistry Master Periodic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (65 ratings)](https://appshunter.io/ios/app/molecular-constructor/id1299401504/reviews) | **[4.9 (51 ratings)](https://appshunter.io/ios/app/chemistry-master-periodic/id1496664834/reviews)** |
| Number of ratings | **65** | 51 |
| Positive reviews | 75.8% of reviews | **90.1% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 12 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 10 MB | 123 MB |
| Requires iOS | **12.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alexander Teplukhin](https://appshunter.io/developer/1299401503) | [Carlo Terracciano](https://appshunter.io/developer/1159639539) |

## What reviewers say

### Molecular Constructor

[App page](https://appshunter.io/ios/app/molecular-constructor/id1299401504)

Create and optimize 3D molecular models. This free software allows users to design molecules and refine their geometry simultaneously. A more advanced desktop version is also available.

**Highlights:** Build molecules in 3D, Design molecular structures, Optimize geometry, Free software, Desktop version available

**Features:** macOS Compatibility

**In-app purchases:** none


### Chemistry Master Periodic

[App page](https://appshunter.io/ios/app/chemistry-master-periodic/id1496664834)

This app uses AI to help you master chemistry. It can solve exercises by taking a photo, balance reactions, and create study tools like flashcards and mind maps from your notes. Access interactive periodic and solubility tables, plus unlimited quizzes.

**Highlights:** AI-powered exercise resolution, Automatic chemical reaction balancing, Flashcard and mind map creation, Interactive periodic table, Unlimited quizzes, Detailed step-by-step explanations

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chemistry · Monthly | $3.99 | per month |
| Chemistry · Monthly | $5.99 | per month |
| Chemistry · Annual | $8.99 | per year |
| Chemistry · Annual | $24.99 | per year |
| Chemistry · Annual | $24.99 | per year |
| Lifetime Subscription Chem | $29.99 | one-time |
| Periodic Table & Reactions | $99.99 | one-time |


## Frequently asked questions

### Is Molecular Constructor free?

Molecular Constructor is free to download, with no in-app purchases.

### Is Chemistry Master Periodic free?

Chemistry Master Periodic is free to download, with in-app purchases available.

### Which has better reviews, Molecular Constructor or Chemistry Master Periodic?

Chemistry Master Periodic is rated higher. Molecular Constructor averages 4.0 out of 5 from 65 ratings, while Chemistry Master Periodic averages 4.9 from 51 ratings.

### Do Molecular Constructor or Chemistry Master Periodic have ads?

Chemistry Master Periodic shows ads; Molecular Constructor does not.

### Which is updated more often, Molecular Constructor or Chemistry Master Periodic?

Molecular Constructor ships an update every 12 months, and Chemistry Master Periodic every 2 months. Most recently, Molecular Constructor was updated on November 4, 2026 and Chemistry Master Periodic on November 12, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*