# Backside Attack vs Colby Mule Life

The clearest difference is update cadence: Colby Mule Life at every 2 weeks against Backside Attack's every 8 months. Backside Attack's advantage is iOS requirement (9.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Backside Attack ships an update every 8 months, Colby Mule Life every 2 weeks. The most recent releases landed on October 3, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Backside Attack | Colby Mule Life |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (74 ratings)](https://appshunter.io/ios/app/backside-attack/id1278956096/reviews)** | — |
| Number of ratings | **74** | — |
| Positive reviews | 95.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 178 MB | 61 MB |
| Requires iOS | **9.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Element26, Inc.](https://appshunter.io/developer/973213639) | [Colby College](https://appshunter.io/developer/349142855) |

## 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


### Colby Mule Life

[App page](https://appshunter.io/ios/app/colby-mule-life/id6754091507)

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

**In-app purchases:** none


## Frequently asked questions

### Is Backside Attack free?

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

### Is Colby Mule Life free?

Colby Mule Life is free to download, with no in-app purchases.

### Do Backside Attack or Colby Mule Life have ads?

Neither Backside Attack nor Colby Mule Life shows ads.

### Which is updated more often, Backside Attack or Colby Mule Life?

Backside Attack ships an update every 8 months, and Colby Mule Life every 2 weeks. Most recently, Backside Attack was updated on October 3, 2026 and Colby Mule Life on October 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.*