Comparison

WebMO Molecule Editor vs Perse Visualizer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

WebMO Molecule Editor

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
Read full 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

About

Perse Visualizer

Visualize protein structures on your mobile device. Search the protein data bank by name or ID and display them in various styles like cartoon or ball and stick. Ideal for biology students and researchers.

Highlights
  • Protein visualization
  • Search by name or ID
  • Multiple display styles
  • Access to protein data bank
  • Educational tool
Features
Read full description

An easy to use mobile protein visualizer. Search for any protein from the RCSB protein data bank by name or ID. Perse can visualize proteins in cartoon, line, sphere and ball and stick style. Find this app helpful in the biology classroom or lab!

Screenshots

WebMO Molecule Editor4 screens
Perse Visualizer4 screens

Verdict

The call

The clearest difference is rating: Perse Visualizer at 5.0 against WebMO Molecule Editor's 4.0. Perse Visualizer also leads on in-app purchases (none vs 2). WebMO Molecule Editor's advantage is ads (none vs shown) and review sentiment (60% vs 50%). On price, update cadence, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

Perse Visualizer holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: WebMO Molecule Editor has 40 ratings behind it against 7, so its average is the more settled of the two. Written reviews complicate that: 60% of WebMO Molecule Editor's written reviews are positive against 50% of Perse Visualizer's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

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

Scorecard6 real differences · 4 level
WebMO Molecule Editor versus Perse Visualizer: the parameters behind the verdict, then further details
ParameterWebMO Molecule EditorPerse Visualizer
PriceFreeFree
Rating4.0 (40 ratings)5.0 (7 ratings) — better
Positive reviews60.4% of reviews — better50.0% of reviews
Number of ratings40 — better7
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.012.0
Further details — not scored
Size12 MB24 MB
Age rating4+4+
DeveloperWebMO, LLCDylan Riffle

Customer experience

WebMO Molecule Editor

All ratings40 ratings
Positive75.0%
Neutral5.0%
Negative20.0%
Written reviews53 reviews
Positive60.4%
Neutral9.4%
Negative30.2%

Perse Visualizer

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

2 purchases

WebMO Molecule Editor

One-time2
  • WebMO Premium for paid usersFree
  • WebMO Premium$4.99
None

Perse Visualizer

No in-app purchases

Questions

Is WebMO Molecule Editor free?
WebMO Molecule Editor is free to download, with in-app purchases available.
Is Perse Visualizer free?
Perse Visualizer is free to download, with no in-app purchases.
Which has better reviews, WebMO Molecule Editor or Perse Visualizer?
Perse Visualizer is rated higher. WebMO Molecule Editor averages 4.0 out of 5 from 40 ratings, while Perse Visualizer averages 5.0 from 7 ratings.
Do WebMO Molecule Editor or Perse Visualizer have ads?
Perse Visualizer shows ads; WebMO Molecule Editor does not.
Which is updated more often, WebMO Molecule Editor or Perse Visualizer?
WebMO Molecule Editor ships an update every 3 months, and Perse Visualizer every 2 months. Most recently, WebMO Molecule Editor was updated on September 3, 2026 and Perse Visualizer on September 9, 2026.

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