# ReactionAtlas — Named Reaction

> Named Reaction (iPhone/iPad app by Xiangqian Liu.)

- Source: https://appshunter.io/ios/app/reactionatlas/id6792311020 (this page in markdown: same URL + `.md`)
- Developer: [Xiangqian Liu](https://appshunter.io/developer/6784624826)
- Category: Education, Reference
- Price: Free with in-app purchases
- Age rating: 12+
- Requires: iOS 17.0 · 60 MB
- Languages: American English
- Released: 2026-07-31
- Data updated: 2026-08-04
- User reviews in markdown: https://appshunter.io/ios/app/reactionatlas/id6792311020/reviews.md

## What is ReactionAtlas?

ReactionAtlas puts 250 classic named reactions of organic synthesis in your pocket — fully offline, no account, no ads.

BROWSE BY MECHANISM FAMILY
Reactions are organized the way mechanisms actually work: Polar, Organometallic, Pericyclic, Radical, Carbene, Concerted, Photochemical. Full-text search across names, net transformations, and reagents. Star your favorites.

RICH REACTION NOTES
Every reaction includes its net transformation, controlled-vocabulary tags for category, mechanism, key intermediates and reagents, a reaction scheme and curly-arrow mechanism figure (from Wikimedia Commons, credited in-app), a concise mechanism walkthrough, an overview, and real synthetic applications from total synthesis.

THE ATLAS
An interactive force-directed map of the whole field: reactions cluster by shared mechanism and identical net transformation. Pinch to zoom, tap any node to jump to its note. Each note also carries its own radial "ego network" — same mechanism, same transformation, shared intermediates, shared reagents — so you can walk the web of organic chemistry one hop at a time.

FLASHCARDS
Quiz yourself from the transformation and reagents, reveal the answer, and track what you have mastered. Progress stays on your device.

OFFLINE AND PRIVATE
Everything is bundled. The app never connects to the internet and collects no data whatsoever.

FREE AND PRO
Every reaction's scheme and curly-arrow mechanism is free, forever. A single one-time purchase (ReactionAtlas Pro) unlocks the overviews, synthetic applications, mechanism insights with extra figures, the interactive atlas, and the flashcard quiz. No subscription.

Made for students preparing for exams, researchers at the bench, and anyone who loves the logic of organic synthesis.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| ReactionAtlas Pro | $7.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-07-31

No release notes.

## More apps by Xiangqian Liu

- [ShadowTuber](https://appshunter.io/ios/app/shadowtuber/id6784624464)

All apps by Xiangqian Liu: https://appshunter.io/developer/6784624826

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-04.*