# Molecular Constructor vs Molecule Lab

Molecular Constructor and Molecule Lab both sit at 3.9 stars, but that hides the real split: 75% of Molecular Constructor's written reviews are positive against 50% of Molecule Lab's. On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 3.9 for Molecular Constructor against 4.0 for Molecule Lab. Both are backed by a comparable volume of ratings — 52 and 18 respectively. Written reviews are what separate them: 75% of Molecular Constructor's written reviews are positive against 50% of Molecule Lab's.

Molecular Constructor ships an update every 12 months, Molecule Lab every 24 months. The most recent releases landed on August 29, 2026 and August 25, 2026 respectively.

## The numbers

| Metric | Molecular Constructor | Molecule Lab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (52 ratings)](https://appshunter.io/ios/app/molecular-constructor/id1299401504/reviews) | **[4.0 (18 ratings)](https://appshunter.io/ios/app/molecule-lab/id1434237899/reviews)** |
| Number of ratings | **52** | 18 |
| Positive reviews | **75.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 12 months** | Every 24 months |
| Monetization | Free | Free |
| Size | 10 MB | 1 MB |
| Requires iOS | **12.0** | 13.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alexander Teplukhin](https://appshunter.io/developer/1299401503) | [Maxamix](https://appshunter.io/developer/667167982) |

## 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


### Molecule Lab

[App page](https://appshunter.io/ios/app/molecule-lab/id1434237899)

Create and view 3D molecular models with an intuitive editor. Supports various elements, bond types, and conformations, with undo/redo functionality. Share your creations easily via messaging and email.

**Highlights:** Build molecules in 3D, Supports oxygen, nitrogen, chlorine, carbon, hydrogen, Double and triple bond creation, Branching and rotation conformations, Undo, redo, and delete controls, Save and edit molecules, Share via text, email, and other services

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Molecular Constructor free?

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

### Is Molecule Lab free?

Molecule Lab is free to download, with no in-app purchases.

### Which has better reviews, Molecular Constructor or Molecule Lab?

Molecule Lab is rated higher. Molecular Constructor averages 3.9 out of 5 from 52 ratings, while Molecule Lab averages 4.0 from 18 ratings.

### Do Molecular Constructor or Molecule Lab have ads?

Neither Molecular Constructor nor Molecule Lab shows ads.

### Which is updated more often, Molecular Constructor or Molecule Lab?

Molecular Constructor ships an update every 12 months, and Molecule Lab every 24 months. Most recently, Molecular Constructor was updated on August 29, 2026 and Molecule Lab on August 25, 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.*