# Backside Attack vs Chemmunity

The clearest difference is in-app purchases: Backside Attack at none against Chemmunity's 1. Backside Attack also leads on ratings volume (74 vs 2) and iOS requirement (9.0 vs 15.0). Chemmunity's advantage is update cadence (monthly vs every 8 months). On price, rating, ads and device support there is nothing between them.

Both are free to download. Chemmunity sells 1 in-app purchase, starting at $29.95 per month. Backside Attack asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Backside Attack against 5.0 for Chemmunity. That said, the two scores are not equally well evidenced: Backside Attack has 74 ratings behind it against 2, so its average is the more settled of the two.

Backside Attack ships an update every 8 months, Chemmunity monthly. The most recent releases landed on October 3, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Backside Attack | Chemmunity |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (74 ratings)](https://appshunter.io/ios/app/backside-attack/id1278956096/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/chemmunity/id6743171806/reviews)** |
| Number of ratings | **74** | 2 |
| Positive reviews | 95.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 178 MB | 64 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Element26, Inc.](https://appshunter.io/developer/973213639) | [Instructional Media Group LLC](https://appshunter.io/developer/1801765248) |

## What reviewers say

### 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


### Chemmunity

[App page](https://appshunter.io/ios/app/chemmunity/id6743171806)

Master organic chemistry with interactive lessons, practice problems, and exams. An AI assistant provides instant answers and recommendations to help you succeed in your studies.

**Highlights:** Step-by-step explanations, Interactive practice problems, AI Study Assistant, Concept videos, Practice exams, Guided study sessions

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly Subscription | $29.95 | per month |


## Frequently asked questions

### Is Backside Attack free?

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

### Is Chemmunity free?

Chemmunity is free to download, with in-app purchases available.

### Which has better reviews, Backside Attack or Chemmunity?

Chemmunity is rated higher. Backside Attack averages 4.9 out of 5 from 74 ratings, while Chemmunity averages 5.0 from 2 ratings.

### Do Backside Attack or Chemmunity have ads?

Neither Backside Attack nor Chemmunity shows ads.

### Which is updated more often, Backside Attack or Chemmunity?

Backside Attack ships an update every 8 months, and Chemmunity monthly. Most recently, Backside Attack was updated on October 3, 2026 and Chemmunity on September 25, 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.*