# ReactionFlash vs Organic Reactions Tutor

The clearest difference is in-app purchases: ReactionFlash at none against Organic Reactions Tutor's 1. ReactionFlash also leads on ratings volume (42 vs 2) and iOS requirement (14.0 vs 17.0). Organic Reactions Tutor's advantage is update cadence (fortnightly vs every 4 months) and rating (5.0 vs 4.8). On price, ads and device support there is nothing between them.

Both are free to download. Organic Reactions Tutor sells 1 one-off in-app purchase. ReactionFlash asks for nothing beyond the download.

Organic Reactions Tutor holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: ReactionFlash has 42 ratings behind it against 2, so its average is the more settled of the two.

ReactionFlash ships an update every 4 months, Organic Reactions Tutor fortnightly. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | ReactionFlash | Organic Reactions Tutor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (42 ratings)](https://appshunter.io/ios/app/reactionflash/id432080813/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/organic-reactions-tutor/id6739188422/reviews)** |
| Number of ratings | **42** | 2 |
| Positive reviews | 80.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 37 MB | 37 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Elsevier Limited](https://appshunter.io/developer/1437273934) | [David Soulsby](https://appshunter.io/developer/1776367161) |

## What reviewers say

### ReactionFlash

[App page](https://appshunter.io/ios/app/reactionflash/id432080813)

This app serves as a comprehensive flashcard-style learning tool for named chemical reactions. It provides detailed information on reaction mechanisms and examples from scientific literature, with a quiz mode to test user knowledge.

**Highlights:** Learn named chemical reactions, Understand reaction mechanisms, View literature examples, Quiz mode for knowledge testing, Flashcard interface

**Features:** macOS Compatibility

**In-app purchases:** none


### Organic Reactions Tutor

[App page](https://appshunter.io/ios/app/organic-reactions-tutor/id6739188422)

Master organic chemistry reactions with a comprehensive library of over 1,300 step-by-step mechanisms and concise notes. Study using flashcards or multiple-choice quizzes, create custom study packs, and track your progress with trophies. Learn offline in over 17 languages.

**Highlights:** 1,300+ curated reactions, Step-by-step mechanisms, Flashcards and multiple-choice quizzes, Custom reaction creation, Study packs and progress tracking, Offline access, Multilingual support (17+ languages)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Categories | $4.99 | one-time |


## Frequently asked questions

### Is ReactionFlash free?

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

### Is Organic Reactions Tutor free?

Organic Reactions Tutor is free to download, with in-app purchases available.

### Which has better reviews, ReactionFlash or Organic Reactions Tutor?

Organic Reactions Tutor is rated higher. ReactionFlash averages 4.8 out of 5 from 42 ratings, while Organic Reactions Tutor averages 5.0 from 2 ratings.

### Do ReactionFlash or Organic Reactions Tutor have ads?

Neither ReactionFlash nor Organic Reactions Tutor shows ads.

### Which is updated more often, ReactionFlash or Organic Reactions Tutor?

ReactionFlash ships an update every 4 months, and Organic Reactions Tutor fortnightly. Most recently, ReactionFlash was updated on October 23, 2026 and Organic Reactions Tutor on October 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.*