# WebMO Molecule Editor vs IUDM

The clearest difference is rating: IUDM at 5.0 against WebMO Molecule Editor's 4.0. IUDM also leads on in-app purchases (none vs 2) and update cadence (every 6 days vs every 3 months). WebMO Molecule Editor's advantage is ratings volume (40 vs 3) and iOS requirement (12.0 vs 15.0). On price, ads and device support there is nothing between them.

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

IUDM 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 3, so its average is the more settled of the two.

WebMO Molecule Editor ships an update every 3 months, IUDM every 6 days. The most recent releases landed on October 7, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | WebMO Molecule Editor | IUDM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (40 ratings)](https://appshunter.io/ios/app/webmo-molecule-editor/id797898095/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/iudm/id6793291501/reviews)** |
| Number of ratings | **40** | 3 |
| Positive reviews | 60.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 12 MB | 21 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [WebMO, LLC](https://appshunter.io/developer/797898098) | [Indiana University Dance Marathon, LLC](https://appshunter.io/developer/6792915141) |

## What reviewers say

### WebMO Molecule Editor

[App page](https://appshunter.io/ios/app/webmo-molecule-editor/id797898095)

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:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WebMO Premium for paid users | Free | one-time |
| WebMO Premium | $4.99 | one-time |


### IUDM

[App page](https://appshunter.io/ios/app/iudm/id6793291501)

This app serves as a central hub for Indiana University Dance Marathon participants. It provides access to important announcements, event schedules, fundraising tools, and information about the organization's mission. It complements the DonorDrive account for registered users.

**Highlights:** Important announcements, Upcoming event schedules, Fundraising resources, Learn about IUDM's mission, Connect with other participants

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is WebMO Molecule Editor free?

WebMO Molecule Editor is free to download, with in-app purchases available.

### Is IUDM free?

IUDM is free to download, with no in-app purchases.

### Which has better reviews, WebMO Molecule Editor or IUDM?

IUDM is rated higher. WebMO Molecule Editor averages 4.0 out of 5 from 40 ratings, while IUDM averages 5.0 from 3 ratings.

### Do WebMO Molecule Editor or IUDM have ads?

Neither WebMO Molecule Editor nor IUDM shows ads.

### Which is updated more often, WebMO Molecule Editor or IUDM?

WebMO Molecule Editor ships an update every 3 months, and IUDM every 6 days. Most recently, WebMO Molecule Editor was updated on October 7, 2026 and IUDM on October 1, 2026.

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