# WebMO Molecule Editor — Draw, Calculate, Visualize

> Build, calculate, and visualize molecules with extensive chemical data access. (iPhone/iPad app by WebMO, LLC.)

- Source: https://appshunter.io/ios/app/webmo-molecule-editor/id797898095 (this page in markdown: same URL + `.md`)
- Developer: [WebMO, LLC](https://appshunter.io/developer/797898098)
- Category: Education, Productivity
- Price: Free with in-app purchases
- Rating: 4.05/5 from 40 App Store ratings · 42 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 12 MB
- Languages: Arabic, Catalan, Czech, Danish, Dutch, English, Finnish, French, German, Greek and 20 more
- Released: 2014-02-07
- Data updated: 2026-06-10
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/webmo-molecule-editor/id797898095/reviews.md

## What is WebMO Molecule Editor?

WebMO allows users to build and view molecules in 3-D, visualize orbitals and symmetry elements, lookup chemical information and properties from external databases, and access state-of-the-art computational chemistry programs.

WebMO is recommended for students and faculty in high school, college, and graduate school who desire mobile access to molecular structures, information, and calculations.

WebMO capabilities include:
- Build molecules by drawing atoms and bonds in a 3-D molecular editor, or by speaking the name (e.g., “aspirin”)
- Optimize structures using VSEPR theory or molecular mechanics
- View Huckel molecular orbitals, electron density, and electrostatic potential
- View molecular vibrations
- View point group and symmetry elements of molecules
- Lookup basic molecular information, including IUPAC and common names, stoichiometry, molar mass
- Lookup chemical data from PubChem and ChemSpider
- Lookup experimental and predicted molecular properties from external databases (NIST, Sigma-Aldrich)
- Lookup IR, UV-VIS, NMR, and mass spectra from external databases (NIST, SDBS)
- Capture high-resolution molecular images
- Save and recall molecular structures locally
- Export and import structures via email

WebMO is also a front-end to WebMO servers (version 14 and higher):
- Supports Gaussian, GAMESS, Molpro, MOPAC, NWChem, ORCA, PQS, PSI, Quantum Espresso, VASP, Q-Chem, and Tinker computational chemistry programs
- Submit, monitor, and view calculations
- View formatted tabular data extracted from output files, as well as raw output
- Visualize geometry, partial charges, dipole moment, normal vibrational modes, molecular orbitals, and NMR/IR/UV-VIS spectra

## Key features

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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

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


## Recent user reviews (10 of 42)

All indexed reviews: https://appshunter.io/ios/app/webmo-molecule-editor/id797898095/reviews.md

### 1/5 — Great app but crashes now

*2024-08-27, version 2.2.1*

It was working fine until I got a new iPad. Now all it does is crash.

### 1/5 — Can’t do much of anything

*2024-05-31, version 2.0.2*

No useful instructions. I can stick atoms together in random arrangements, that’s all.

### 2/5 — Crashes on iPad 10

*2024-04-25, version 2.0.2*

Great app, but the latest update is crashing on iPad 10. It happens upon immediately opening, so it’s completely unusable. I have forced the app to reset, checked for an update, uninstalled/reinstalled, and reset the device.

### 2/5 — The premium was a SCAM

*2024-02-23, version 2.0.2*

i really enjoyed this game and would’ve given it five stars, BUT I DECIDED TO GET THE PREMIUM AND IT DID ABSOLUTELY NOTHING!!! GIVE ME MY MONEY BACK OR ELSE

### 4/5 — Great for students!

*2023-12-06, version 2.0.2*

As a student I am constantly referring back to this app to help give myself an idea of a particular molecules reactive sites, it’s also really great to understand the planes that molecules are in!

### 5/5 — Totally pro results

*2022-06-17, version 2.0.2*

As good as much more expensive comp chem packages. Does what you probably need done anyhow, ESP, orbitals with occupancy, MM, etc.

### 5/5 — Useful tool

*2021-12-07, version 2.0.2*

This is a useful tool for visualising molecules, looking up some naming, and demonstrating vibrational modes.

### 5/5 — Great app to visualize molecules and calculate basic properties

*2021-10-29, version 2.0.2*

Very useful for visualizing molecules in 3D. Great tool for teaching chemistry to students!

### 5/5 — 10/10

*2021-01-25, version 2.0.1*

Thank you guys for making this app free, it has helped me tremendously

### 5/5 — Rich functionality, intuitive interface

*2020-07-20, version 2.0.1*

Nice array of functionality with an intuitive interface. There is a decent variety of information that you can obtain about a molecule; Pm6 calculation results can be generated.

## Frequently asked questions about WebMO Molecule Editor

### What can I do with the WebMO Molecule Editor?

You can build and view molecules in 3D, optimize structures, visualize orbitals and symmetry elements, and look up extensive chemical information and properties from external databases. It also integrates with various computational chemistry programs for advanced calculations.

### Who is this app designed for?

This app is recommended for students and faculty in high school, college, and graduate school who need mobile access to molecular structures, information, and calculations. It's a valuable tool for learning and research in chemistry.

### How does the app handle molecular building?

You can build molecules by drawing atoms and bonds directly in the 3D editor, or by simply speaking the name of a common molecule (e.g., 'aspirin'). This offers flexible ways to create your molecular models.

### Can I access chemical data and properties?

Yes, the app allows you to look up basic molecular information, chemical data from PubChem and ChemSpider, and experimental/predicted molecular properties from external databases like NIST and Sigma-Aldrich. It also provides access to spectral data.

### Is this app free to use?

The application is free to download and use, with the option for in-app purchases. These purchases likely unlock additional features or advanced functionalities beyond the core capabilities.

## Version history (last 5 releases)

### 2.3.1 — 2025-09-20

* WebMO 25 support
* Stereochemistry detection

### 2.2.2 — 2024-09-29

* iOS 18 compatibility fixes

### 2.2.1 — 2024-07-09

* Updated iOS compatibility
* compatibility with WebMO 24

### 2.0.2 — 2021-10-22

* Updates to molecule import by name

### 2.0.1 — 2020-05-26

* Updates for recent iOS versions
* Automatically symmetrize molecules after mechanics cleanup
* Updated splash screen
* Updated logo and branding

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## More apps by WebMO, LLC

- [WebMO Premium](https://appshunter.io/ios/app/webmo-premium/id1448564335)

All apps by WebMO, LLC: https://appshunter.io/developer/797898098

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*