# ReactionFlash vs ReactionAtlas

The clearest difference is in-app purchases: ReactionFlash at none against ReactionAtlas's 1. ReactionFlash also leads on iOS requirement (14.0 vs 17.0). On price, ads and device support there is nothing between them.

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

## The numbers

| Metric | ReactionFlash | ReactionAtlas |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (42 ratings)](https://appshunter.io/ios/app/reactionflash/id432080813/reviews)** | — |
| Number of ratings | **42** | — |
| Positive reviews | 80.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Monetization | Free | — |
| Size | 37 MB | 60 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Elsevier Limited](https://appshunter.io/developer/1437273934) | [Xiangqian Liu](https://appshunter.io/developer/6784624826) |

## 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


### ReactionAtlas

[App page](https://appshunter.io/ios/app/reactionatlas/id6792311020)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

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


## Frequently asked questions

### Is ReactionFlash free?

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

### Is ReactionAtlas free?

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

### Do ReactionFlash or ReactionAtlas have ads?

Neither ReactionFlash nor ReactionAtlas shows ads.

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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.*