# OBE Engineering System vs MolecuLens

The clearest difference is in-app purchases: OBE Engineering System at none against MolecuLens's 2. OBE Engineering System also leads on iOS requirement (12.0 vs 15.1). MolecuLens's advantage is update cadence (monthly vs every 9 months). On price, ads and device support there is nothing between them.

Both are free to download. MolecuLens sells 2 in-app purchases, starting at $4.99 per month. OBE Engineering System asks for nothing beyond the download.

OBE Engineering System ships an update every 9 months, MolecuLens monthly. The most recent releases landed on September 21, 2026 and June 23, 2026 respectively.

## The numbers

| Metric | OBE Engineering System | MolecuLens |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/moleculens/id6757090293/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Monthly** |
| Monetization | — | Freemium |
| Size | 37 MB | 43 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Softzone](https://appshunter.io/developer/1576527087) | [Jake Kinchen](https://appshunter.io/developer/1773423641) |

## What reviewers say

### OBE Engineering System

[App page](https://appshunter.io/ios/app/obe-engineering-system/id1668638241)

**Features:** macOS Compatibility

**In-app purchases:** none


### MolecuLens

[App page](https://appshunter.io/ios/app/moleculens/id6757090293)

Explore and learn about over 100 million chemical compounds in interactive 3D. AI-powered features generate guided tours, quizzes, and shareable diagrams to enhance understanding and communication.

**Highlights:** Interactive 2D/3D molecular viewing, AI-guided molecular tours and quizzes, Search by name, SMILES, formula, or drawing, Conformer generation, 3D orbital overlays (Pro feature), High-quality diagram generation (Pro feature)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MolecuLens Pro (Monthly) | $4.99 | per month |
| MolecuLens Pro (Yearly) | $24.99 | per year |


## Frequently asked questions

### Is OBE Engineering System free?

OBE Engineering System is free to download, with no in-app purchases.

### Is MolecuLens free?

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

### Do OBE Engineering System or MolecuLens have ads?

Neither OBE Engineering System nor MolecuLens shows ads.

### Which is updated more often, OBE Engineering System or MolecuLens?

OBE Engineering System ships an update every 9 months, and MolecuLens monthly. Most recently, OBE Engineering System was updated on September 21, 2026 and MolecuLens on June 23, 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.*