# MoleculeSketch iP vs Molecular Constructor

The clearest difference is in-app purchases: Molecular Constructor at none against MoleculeSketch iP's 1. Molecular Constructor also leads on review sentiment (75% vs 50%) and ratings volume (65 vs 4). MoleculeSketch iP's advantage is rating (4.5 vs 4.0) and update cadence (every 2 months vs every 12 months). On price, ads and iOS requirement there is nothing between them.

Both are free to download. MoleculeSketch iP sells 1 one-off in-app purchase. Molecular Constructor asks for nothing beyond the download.

MoleculeSketch iP holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Molecular Constructor has 65 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 50% of MoleculeSketch iP's written reviews are positive against 75% of Molecular Constructor's, so the app with the better star average is not the one people write more warmly about.

MoleculeSketch iP ships an update every 2 months, Molecular Constructor every 12 months. The most recent releases landed on October 11, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | MoleculeSketch iP | Molecular Constructor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (4 ratings)](https://appshunter.io/ios/app/moleculesketch-ip/id1281284737/reviews)** | [4.0 (65 ratings)](https://appshunter.io/ios/app/molecular-constructor/id1299401504/reviews) |
| Number of ratings | 4 | **65** |
| Positive reviews | 50.0% of reviews | **75.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 12 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 59 MB | 10 MB |
| Requires iOS | 13 | **12.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Stefan Dolder](https://appshunter.io/developer/942173209) | [Alexander Teplukhin](https://appshunter.io/developer/1299401503) |

## What reviewers say

### MoleculeSketch iP

[App page](https://appshunter.io/ios/app/moleculesketch-ip/id1281284737)

Easily draw chemical formulas and reactions with this intuitive application. It offers features like adding atoms, bonds, and functional groups, with advanced options available through an in-app purchase. Share your creations or import existing structures.

**Highlights:** Draw atoms and bonds, Select various bond types, Add functional groups, Show missing hydrogen atoms, Calculate molecular mass, Import mol/sdf files, Copy, paste, and cut drawings

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version | $1.99 | one-time |


### 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


## Frequently asked questions

### Is MoleculeSketch iP free?

MoleculeSketch iP is free to download, with in-app purchases available.

### Is Molecular Constructor free?

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

### Which has better reviews, MoleculeSketch iP or Molecular Constructor?

MoleculeSketch iP is rated higher. MoleculeSketch iP averages 4.5 out of 5 from 4 ratings, while Molecular Constructor averages 4.0 from 65 ratings.

### Do MoleculeSketch iP or Molecular Constructor have ads?

Neither MoleculeSketch iP nor Molecular Constructor shows ads.

### Which is updated more often, MoleculeSketch iP or Molecular Constructor?

MoleculeSketch iP ships an update every 2 months, and Molecular Constructor every 12 months. Most recently, MoleculeSketch iP was updated on October 11, 2026 and Molecular Constructor on October 22, 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.*