App Store

WebMO Molecule Editor

Originator WebMO, LLC
Primary Metric 40
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
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Developer & User Discourse

staceyaj • Aug 27, 2024 ★ 1
It was working fine until I got a new iPad. Now all it does is crash.
Rainbound • May 31, 2024 ★ 1
No useful instructions. I can stick atoms together in random arrangements, that’s all.
AceticAcid • Apr 25, 2024 ★ 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.
Suzhynes • Feb 23, 2024 ★ 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
Bramble Head • Dec 6, 2023 ★ 4
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!
C.Clifford • Jun 17, 2022 ★ 5
As good as much more expensive comp chem packages. Does what you probably need done anyhow, ESP, orbitals with occupancy, MM, etc.
Riifaa • Oct 29, 2021 ★ 5
Very useful for visualizing molecules in 3D. Great tool for teaching chemistry to students!
Will_Cleve • Jan 25, 2021 ★ 5
Thank you guys for making this app free, it has helped me tremendously
Euler Wiles • Jul 20, 2020 ★ 5
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.
eno1ate • May 24, 2020 ★ 3
This is a good app however it always crash.This is totally not enjoyable when using the app of this kind.
nycqzbw • Feb 8, 2020 ★ 5
Would’ve paid $20 lol
NCC1701. • Nov 4, 2019 ★ 3
It could be a great teaching app but keeps crashing constantly. I've installed it on my iPhone 8 with iOS 13.2 and also on my iPad mini gen 1 iOS 9.3.6, happens in both.
I truly hope it is fixed on next releases, only then I'll pay for it. Until then I'll keep using iSpartan for my classes does similar things but requires internet connection and does not offers free servers for submitting calculations.
jafae • Aug 6, 2019 ★ 5
I'm going to buy the upgrade just to show my appreciation for this incredible app that brings me so much joy, happiness, and fun molecular modeling activity time. Thank you scholars of the world, thank you very much.
pdw223 • May 27, 2019 ★ 5
Communicating ‘complex’ thoughts, especially when it pertains to chemical phenomena, can be extremely difficult, unless BOTH parties are competent and skilled, regarding chemistry and communication, respectively.

Assuming a picture is word 1000 words this app has saved me roughly 200,000-300,000 words thus far, and it’s only been 1-2 weeks;
Yeah, this app is relatively that easy to use and I’m a supervisor in a academic research lab.

Pay the $5, instead of wasting $5 x (all those words worth of pay on talking).

If you aren’t talking this much (above) without this app, and you’re training freshman-senior undergrads to be lab competent, please, quit your job.

They need your guidance, not your negligence.

Thank you again WebMO company.
Schmidte11 • Dec 16, 2018 ★ 5
It looks like the issue preventing molecule placement is fixed!
will6284 • Dec 5, 2018 ★ 1
I liked this app but it hasn’t worked for months. I can’t build models anymore. I can only import by molecule name. Hopefully this will be fixed. It’s been like this for over a year.
FIVESTARSEVERYTHING • Nov 14, 2018 ★ 5
DON’T LISTEN TO THE HATERS!
I SEVERELY RECOMMEND GETTING THIS! 10/10 IT IS AWSOME.

Note: Dear Haters,
😤😤😤😡😡😡😤😤😤👎👎👎😾😾😾😾😾🙁🙁🙁🙁
You 🤯 the way you criticize this.
Tcherry419 • Aug 20, 2018 ★ 1
I downloaded and paid the extra $5 for this app to help with my organic chemistry class and it does not help. Out of all the molecules I’ve built trying to learn more information about, so far water (h2o) is the only one it can solve. I’ve tried simple ones like ethane and butane which are simple 2 and 4 carbon molecules and it can’t handle it. Don’t even think about adding an oxygen or a nitrogen. I would honestly give this app a negative star because it also doesn’t work properly. It says to tap to add a chemical, well I’m tapping away and nothing is happening. The demo is garbage and does not help. I would request a refund but I don’t think it’s even worth the hassle. Bottom line...this app is not worth it.
Shane Rutledge • May 1, 2018 ★ 1
This app worked amazing until you are not able to put atoms down anymore
Brokerhenry • Jan 1, 2018 ★ 1
Downloaded this app onto my iPad Pro. Stuck at opening where it asks if you wish to see video tutorial. Have not gotten past that. Please fix the bug. Thank you.