# Molecular Constructor vs Unreal Chemist

The clearest difference is rating: Unreal Chemist at 4.5 against Molecular Constructor's 3.9. Unreal Chemist also leads on update cadence (every 2 weeks vs every 12 months). Molecular Constructor's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, review sentiment, ratings volume and device support there is nothing between them.

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

Unreal Chemist holds the better App Store score, 4.5 against 3.9. Both are backed by a comparable volume of ratings — 52 and 65 respectively. Written reviews complicate that: 75% of Molecular Constructor's written reviews are positive against 74% of Unreal Chemist's, so the app with the better star average is not the one people write more warmly about.

Molecular Constructor ships an update every 12 months, Unreal Chemist every 2 weeks. The most recent releases landed on August 29, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Molecular Constructor | Unreal Chemist |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (52 ratings)](https://appshunter.io/ios/app/molecular-constructor/id1299401504/reviews) | **[4.5 (65 ratings)](https://appshunter.io/ios/app/unreal-chemist/id1597689215/reviews)** |
| Number of ratings | 52 | **65** |
| Positive reviews | **75.0% of reviews** | 73.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 12 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 10 MB | 342 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alexander Teplukhin](https://appshunter.io/developer/1299401503) | [ZipoApps](https://appshunter.io/developer/1671444635) |

## 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


### Unreal Chemist

[App page](https://appshunter.io/ios/app/unreal-chemist/id1597689215)

Explore a virtual chemistry lab on your phone. Mix chemicals, observe reactions, and conduct over 750 unique simulations with more than 150 available substances. Adjust variables like temperature and concentration to understand chemical principles.

**Highlights:** Mix chemicals for reactions, Burn salts for colorful flames, Heat elements for color emission, Adjust reactant concentration and quantity, Regulate reaction temperature, Control time flow (slow/fast forward), Monitor pH changes with indicators

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Version | $5.99 | one-time |

**What reviewers like**

- ✨ Very educational for chemistry students
- 👍 Realistic looking and lots to do
- 🌟 Contains a heap of information
- 👍 Ads are occasional and not deterring
- 🚀 Amazing graphics and advanced features

**What reviewers complain about**

- 🐛 Some reactions are inaccurate
- 🐛 Buggy interface and features
- 💸 Many features behind a paywall
- 😩 Ads can be excessive
- 🤔 Free version is uninspiring

**Reported bugs**

- Sulfuric acid not dissolving with salts
- Heating solution during titration
- Watch ad for premium session not working
- Mixing game not always working intuitively
- Buttons on iPhone blocked by camera

**Requested features**

- Add more elements (e.g., Mn, H, O, Cl, F, Pb)
- Add more acids (e.g., Chloroauric acid, Vanadic acid, Perrhenic acid)
- Add more bases and solvents (e.g., styrofoam, polystyrene, ethanol, acetone)
- Add gases (e.g., Chlorine, Fluorine, Hydrogen, Oxygen)
- Option to specify amounts of chemicals to add


## Frequently asked questions

### Is Molecular Constructor free?

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

### Is Unreal Chemist free?

Unreal Chemist is free to download, with in-app purchases available.

### Which has better reviews, Molecular Constructor or Unreal Chemist?

Unreal Chemist is rated higher. Molecular Constructor averages 3.9 out of 5 from 52 ratings, while Unreal Chemist averages 4.5 from 65 ratings.

### Do Molecular Constructor or Unreal Chemist have ads?

Unreal Chemist shows ads; Molecular Constructor does not.

### Which is updated more often, Molecular Constructor or Unreal Chemist?

Molecular Constructor ships an update every 12 months, and Unreal Chemist every 2 weeks. Most recently, Molecular Constructor was updated on August 29, 2026 and Unreal Chemist on September 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.*