# WebMO Molecule Editor

> Draw, Calculate, Visualize

Canonical page: [https://chrome-stats.com/d/id797898095](https://chrome-stats.com/d/id797898095)

## Overview

- **ID:** `id797898095`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** WebMO, LLC
- **Category:** Education
- **Rating:** 4.00 / 5 (40 ratings)
- **Version:** 2.3.1
- **Last updated:** 2025-09-20
- **First published:** 2014-02-07
- **Size:** 12 MB
- **Data as of:** 2026-09-24
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/webmo-molecule-editor/id797898095)
- **Privacy policy:** [http://www.webmo.net/privacy](http://www.webmo.net/privacy)

## Description

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

## Rankings

- #200,816 — Overall

## Review summary

Users praise WebMO for its 3D visualization, broad chemistry features, and educational utility, especially on mobile. However, stability issues dominate feedback, with frequent crashes, freezes, and unresponsive interactions after updates. Some report paid upgrades failing to deliver functionality. On balance, its visualization and teaching value are high when it runs, but reliability is the key concern.

### Pros

- Excellent 3D visualization and fast creation of molecular models on mobile devices.
- Rich feature set for chemistry (orbitals, occupancy, MM, etc.) and competitive with pricier software.
- Free-to-use with educational value; appreciated by instructors and students.
- Intuitive interface and ease of use for learning and teaching.
- Mobile-friendly performance and ability to run or share results via open servers.

### Cons

- Frequent crashes and freezes across devices and after updates; unstable.
- App becomes unresponsive on startup or during use; inability to place atoms reliably.
- Paid upgrade does not deliver promised features; refunds requested.
- Poor onboarding and lack of useful instructions/tutorials.
- Compatibility issues with older devices/OS versions.

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Source: [Chrome-Stats](https://chrome-stats.com/d/id797898095)