# WebMO Molecule Editor vs NMR Calculator 2

The clearest difference is in-app purchases: NMR Calculator 2 at none against WebMO Molecule Editor's 2. WebMO Molecule Editor's advantage is update cadence (every 3 months vs every 33 months) and iOS requirement (12.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. WebMO Molecule Editor sells 2 one-off in-app purchases. NMR Calculator 2 asks for nothing beyond the download.

WebMO Molecule Editor ships an update every 3 months, NMR Calculator 2 every 33 months. The most recent releases landed on September 3, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | WebMO Molecule Editor | NMR Calculator 2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (40 ratings)](https://appshunter.io/ios/app/webmo-molecule-editor/id797898095/reviews)** | — |
| Number of ratings | **40** | — |
| Positive reviews | 60.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 33 months |
| Monetization | Free with in-app purchases | — |
| Size | 12 MB | 2 MB |
| Requires iOS | **12.0** | 26.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [WebMO, LLC](https://appshunter.io/developer/797898098) | [Jae-Seung Lee](https://appshunter.io/developer/1146296876) |

## What reviewers say

### WebMO Molecule Editor

[App page](https://appshunter.io/ios/app/webmo-molecule-editor/id797898095)

Create and explore 3D molecular structures, visualize chemical properties, and access extensive chemical databases. This tool is ideal for students and educators needing on-the-go access to molecular information and computational chemistry resources.

**Highlights:** 3D molecular editor, Structure optimization, Orbital and symmetry visualization, Chemical database lookup, Spectra visualization, High-resolution image capture, Computational chemistry program integration

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WebMO Premium for paid users | Free | one-time |
| WebMO Premium | $4.99 | one-time |


### NMR Calculator 2

[App page](https://appshunter.io/ios/app/nmr-calculator-2/id6466729022)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is WebMO Molecule Editor free?

WebMO Molecule Editor is free to download, with in-app purchases available.

### Is NMR Calculator 2 free?

NMR Calculator 2 is free to download, with no in-app purchases.

### Do WebMO Molecule Editor or NMR Calculator 2 have ads?

Neither WebMO Molecule Editor nor NMR Calculator 2 shows ads.

### Which is updated more often, WebMO Molecule Editor or NMR Calculator 2?

WebMO Molecule Editor ships an update every 3 months, and NMR Calculator 2 every 33 months. Most recently, WebMO Molecule Editor was updated on September 3, 2026 and NMR Calculator 2 on September 9, 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.*