# WebMO Premium vs zFairs

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.

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.

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.

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

## The numbers

| Metric | WebMO Premium | zFairs |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/webmo-premium/id1448564335/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/zfairs/id6758678850/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | **Weekly** |
| Monetization | Paid | **Free** |
| Size | 12 MB | 47 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [WebMO, LLC](https://appshunter.io/developer/797898098) | [Illuminating Software LLC](https://appshunter.io/developer/1785071310) |

## What reviewers say

### WebMO Premium

[App page](https://appshunter.io/ios/app/webmo-premium/id1448564335)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### zFairs

[App page](https://appshunter.io/ios/app/zfairs/id6758678850)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*