Comparison

WebMO Premium vs zFairs

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

Head to head
About

WebMO Premium

This app allows users to build and visualize molecules in 3D, access chemical information from external databases, and interact with advanced computational chemistry programs. It's designed for students and faculty needing mobile access to molecular structures and data.

Highlights
  • 3D molecular editor
  • VSEPR and molecular mechanics optimization
  • Orbital and symmetry visualization
  • Chemical data lookup
  • Computational chemistry program integration
  • Spectra visualization
Features
Read full description

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

About

zFairs

This app centralizes event information, providing timely updates, documents, and FAQs in one place. It simplifies communication by organizing content into clear sections and sending push notifications for important changes. Stay informed and connected throughout any event with this easy-to-manage hub.

Highlights
  • Centralized event information
  • Timely announcements and updates
  • Direct access to documents and resources
  • Organized content sections
  • Push notifications for changes
  • Easy communication management
Features
Read full description

zFairs is your central hub for staying informed before, during, and after an event. Instead of searching through emails, links, and messages, users can quickly find what they need in one simple app experience. The app makes it easy to view important announcements and timely updates, access documents and resources directly, and read FAQs and key informational pages. Content is organized into clear sections that group related information together, helping users navigate quickly and stay focused. Users can also receive push notifications for important changes and reminders. zFairs is designed to make communication clear, timely, and easy to manage, so users stay connected and informed at every step.

Screenshots

WebMO Premium4 screens
zFairs4 screens

Verdict

The call

The clearest difference is price: zFairs at Free against WebMO Premium's $4.99. zFairs also leads on rating (5.0 vs 4.0) and update cadence (weekly vs every 17 months). WebMO Premium's advantage is ratings volume (4 vs 1) and iOS requirement (12.0 vs 17.6). On ads, in-app purchases and device support 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

zFairs is free to download; WebMO Premium costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

zFairs holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

UpkeepUpdate frequency

WebMO Premium ships an update every 17 months, zFairs weekly. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

Scorecard6 real differences · 4 level
WebMO Premium versus zFairs: the parameters behind the verdict, then further details
ParameterWebMO PremiumzFairs
Price$4.99Free — better
Rating4.0 (4 ratings)5.0 (1 ratings) — better
Positive reviews66.7% of reviews—
Number of ratings4 — better1
Update frequencyEvery 17 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.6
Further details — not scored
Size12 MB47 MB
Age rating4+4+
DeveloperWebMO, LLCIlluminating Software LLC

Customer experience

WebMO Premium

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

zFairs

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

WebMO Premium

No in-app purchases

None

zFairs

No in-app purchases

Questions

Is WebMO Premium free?
WebMO Premium costs $4.99, with no in-app purchases.
Is zFairs free?
zFairs is free to download, with no in-app purchases.
Which has better reviews, WebMO Premium or zFairs?
zFairs is rated higher. WebMO Premium averages 4.0 out of 5 from 4 ratings, while zFairs averages 5.0 from 1 ratings.
Do WebMO Premium or zFairs have ads?
Neither WebMO Premium nor zFairs shows ads.
Which is updated more often, WebMO Premium or zFairs?
WebMO Premium ships an update every 17 months, and zFairs weekly. Most recently, WebMO Premium was updated on October 7, 2026 and zFairs on October 13, 2026.

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