Shin Reaction Mechanism vs Backside Attack
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Shin Reaction Mechanism
This application provides a quick search for hundreds of organic chemistry reaction mechanisms. It is designed to be an essential tool for students learning the subject.
- Hundreds of reaction mechanisms
- Quick search functionality
- Essential for organic chemistry learning
- Designed for students
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"Reaction Mechanisms" is essential for learning organic chemistry. SIN REACTION MECHANISMS is an application that gives you quick search over hundred varieties of reaction mecha
Backside Attack
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.
- 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
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Backside Attack is an educational app targeting students learning organic chemistry for the first time. The game focuses on the SN2 reaction, which is often one of the first reactions students learn when studying organic chemistry. The SN2 reaction is great for educational purposes, as it provides a forum for students to learn about many common variables associated with chemical reactions, such as leaving group ability, nucleophilicity, steric factors, and solvent effects. The Backside Attack project is led by Dr. Neil Garg, an organic chemistry Professor at UCLA. He and six UCLA students (now alumni) devoted countless hours to creating the game flow and all content. The heroic students are: Tara Kappel, Preeya Mehta, William Parsons Stefan Prisacaru, Ernst Schmid, and Justin Soffer. Backside Attack is powered by Element26, Inc., thanks to Dr. Daniel D. Caspi. Students, be sure to: Learn even more and earn points by using the Check Yourself +50 feature on the scoring screen! Unlock the Chem Yourself feature by completing each topic!
Screenshots
Verdict
The clearest difference is in-app purchases: Backside Attack at none against Shin Reaction Mechanism's 1. Backside Attack also leads on ratings volume (74 vs 1) and device support (4 vs 2). Shin Reaction Mechanism's advantage is update cadence (every 4 weeks vs every 8 months). On price, rating, review sentiment and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Shin Reaction Mechanism sells 1 one-off in-app purchase. Backside Attack asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Shin Reaction Mechanism against 4.9 for Backside Attack. That said, the two scores are not equally well evidenced: Backside Attack has 74 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 89% of Shin Reaction Mechanism's written reviews are positive against 95% of Backside Attack's.
Shin Reaction Mechanism ships an update every 4 weeks, Backside Attack every 8 months. The most recent releases landed on June 24, 2026 and July 4, 2026 respectively.
| Parameter | Shin Reaction Mechanism | Backside Attack |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.9 (74 ratings) |
| Positive reviews | 89.5% of reviews | 95.5% of reviews — better |
| Number of ratings | 1 | 74 — better |
| Update frequency | Every 4 weeks — better | Every 8 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 17.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 176 MB | 178 MB |
| Age rating | 4+ | 4+ |
| Developer | junpei ono | Element26, Inc. |
Customer experience
Shin Reaction Mechanism
Backside Attack
In-app purchases
Shin Reaction Mechanism
- 詳細画面解放$2.99
Backside Attack
No in-app purchases
Questions
Is Shin Reaction Mechanism free?
Is Backside Attack free?
Which has better reviews, Shin Reaction Mechanism or Backside Attack?
Do Shin Reaction Mechanism or Backside Attack have ads?
Which is updated more often, Shin Reaction Mechanism or Backside Attack?
Other comparisons
