# WebMO Premium — Draw, Calculate, Visualize

> Mobile interface for building, visualizing, and calculating molecular structures and properties. (iPhone/iPad app by WebMO, LLC.)

- Source: https://appshunter.io/ios/app/webmo-premium/id1448564335 (this page in markdown: same URL + `.md`)
- Developer: [WebMO, LLC](https://appshunter.io/developer/797898098)
- Category: Education, Productivity
- Price: $4.99
- Rating: 4.00/5 from 4 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 12 MB
- Languages: American English, Arabic, Catalan, Czech, Danish, Dutch, Finnish, French (France), German (Germany), Greek and 20 more
- Released: 2019-01-07
- Data updated: 2026-08-23
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/webmo-premium/id1448564335/reviews.md

## What is WebMO Premium?

WebMO Premium is equivalent in functionality to the free 'WebMO' app in conjunction with the 'WebMO Premium' in-app purchase. This paid version is provided for convienence for volume purchases.

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
- VSEPR and molecular mechanics optimization
- Orbital and symmetry visualization
- Chemical data lookup
- Computational chemistry program integration
- Spectra visualization

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/webmo-premium/id1448564335/reviews.md

### 1/5 — Current version crashes on opening

*2024-08-27*

Beware it will not run. It crashes immediately upon opening.

### 5/5 — A useful and interesting ap.

*2020-01-16*

This app is great! It provides useful and interesting results.  And it’s quite flexible if you know how to access the features. Here are some things I think would improve it.

1. I would like to have the ability to copy and paste molecular fragments.

2. I would like to be able to turn off the automatic charge on atoms.

3. I would like the molecule to be centered on the screen more easily.  

4.  I would like a little more time when I access the computational packages.  120 sec would be fantastic.  

Thanks for a great program.

### 5/5 — I’ve Already Bought Premium in the Free Version

*2019-11-16*

I have no clue why they made a second app, but I decided I love premium enough that I would buy it again to support the developers. I love that you get a lot of the Pro features for the desktop version in a mobile package for only $4.99. That usually runs about $900 if I can remember! I wanna thank these wonderful people for allowing some cheap science and fun for the general public. Thanks!

## Frequently asked questions about WebMO Premium

### What is WebMO Premium?

WebMO Premium is a paid application that offers the same functionality as the free 'WebMO' app, with the convenience of a single purchase for volume licensing. It allows users to build, visualize, and calculate molecular structures and properties.

### What kind of learning methodology does WebMO Premium use?

WebMO Premium facilitates learning through interactive visualization and hands-on building of molecular structures. Users can directly manipulate molecules, observe their properties, and understand concepts like orbitals and symmetry elements.

### How does WebMO Premium track user progress?

WebMO Premium does not have a formal progress tracking system for users. However, users can save and recall their molecular structures locally, allowing them to revisit and continue their work on specific projects.

### Does WebMO Premium offer certifications?

WebMO Premium does not offer any certifications. It is a tool designed to aid in the study and research of chemistry, providing access to molecular data and computational tools.

### What devices is WebMO Premium compatible with?

WebMO Premium is available for iPhone, iPad, and iPod. It is designed to provide mobile access to advanced chemistry functionalities.

### How often is WebMO Premium updated?

The latest version of WebMO Premium is 2.3.1, which was last updated on September 21, 2025. Updates typically include new features, bug fixes, and compatibility improvements.

### What is the age rating for WebMO Premium?

WebMO Premium has an age rating of 4+. This indicates that the content is generally suitable for all ages, though parental guidance may be advised for younger children.

### Does WebMO Premium have ads?

No, WebMO Premium does not contain advertisements. As a paid application, it provides an ad-free experience for users.

## Version history (last 5 releases)

### 2.3.1 — 2025-09-21

* WebMO 25 compatibility
* Support for stereochemistry

### 2.2.2 — 2024-09-29

* iOS 18 compatibility fixes

### 2.2.1 — 2024-07-10

* Updated iOS compatibility
* WebMO 24 compatibility

### 2.0.2 — 2021-10-22

* Updated support for importing molecules 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 Molecule Editor](https://appshunter.io/ios/app/webmo-molecule-editor/id797898095)

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

## Related topics

[webmo](https://appshunter.io/ios/topics/webmo)

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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 2026-08-23.*