# WebMO Molecule Editor vs Backside Attack

The clearest difference is rating: Backside Attack at 4.9 against WebMO Molecule Editor's 4.0. Backside Attack also leads on review sentiment (95% vs 60%) and in-app purchases (none vs 2). WebMO Molecule Editor's advantage is update cadence (every 3 months vs every 8 months). On price, ratings volume, ads and device support there is nothing between them.

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

Backside Attack holds the better App Store score, 4.9 against 4.0. Both are backed by a comparable volume of ratings — 40 and 74 respectively. Written reviews point the same way: 60% of WebMO Molecule Editor's written reviews are positive against 95% of Backside Attack's.

WebMO Molecule Editor ships an update every 3 months, Backside Attack every 8 months. The most recent releases landed on September 3, 2026 and July 4, 2026 respectively.

## The numbers

| Metric | WebMO Molecule Editor | Backside Attack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (40 ratings)](https://appshunter.io/ios/app/webmo-molecule-editor/id797898095/reviews) | **[4.9 (74 ratings)](https://appshunter.io/ios/app/backside-attack/id1278956096/reviews)** |
| Number of ratings | 40 | **74** |
| Positive reviews | 60.4% of reviews | **95.5% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 8 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 12 MB | 178 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [WebMO, LLC](https://appshunter.io/developer/797898098) | [Element26, Inc.](https://appshunter.io/developer/973213639) |

## 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 |


### Backside Attack

[App page](https://appshunter.io/ios/app/backside-attack/id1278956096)

This educational game helps students grasp fundamental organic chemistry concepts, specifically focusing on the SN2 reaction. It explores key variables like leaving group ability, nucleophilicity, steric factors, and solvent effects to build a strong foundation in chemistry.

**Highlights:** Learn SN2 reaction mechanics, Explore leaving group ability, Understand nucleophilicity, Analyze steric factors, Study solvent effects, Earn points with Check Yourself +50, Unlock Chem Yourself feature

**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 Backside Attack free?

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

### Which has better reviews, WebMO Molecule Editor or Backside Attack?

Backside Attack is rated higher. WebMO Molecule Editor averages 4.0 out of 5 from 40 ratings, while Backside Attack averages 4.9 from 74 ratings.

### Do WebMO Molecule Editor or Backside Attack have ads?

Neither WebMO Molecule Editor nor Backside Attack shows ads.

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

WebMO Molecule Editor ships an update every 3 months, and Backside Attack every 8 months. Most recently, WebMO Molecule Editor was updated on September 3, 2026 and Backside Attack on July 4, 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.*