# MolecuLens vs Big O Notation

The clearest difference is in-app purchases: Big O Notation at none against MolecuLens's 2. On price, ads, device support and iOS requirement there is nothing between them.

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

## The numbers

| Metric | MolecuLens | Big O Notation |
| --- | --- | --- |
| 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 | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | — |
| Monetization | Freemium | — |
| Size | 43 MB | 38 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jake Kinchen](https://appshunter.io/developer/1773423641) | [AFTW LLC](https://appshunter.io/developer/1886356149) |

## What reviewers say

### 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 |


### Big O Notation

[App page](https://appshunter.io/ios/app/big-o-notation/id6771656290)

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

**In-app purchases:** none


## Frequently asked questions

### Is MolecuLens free?

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

### Is Big O Notation free?

Big O Notation is free to download, with no in-app purchases.

### Do MolecuLens or Big O Notation have ads?

Neither MolecuLens nor Big O Notation shows ads.

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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.*