# ReactionFlash vs CycleChem

The clearest difference is in-app purchases: ReactionFlash at none against CycleChem's 1. ReactionFlash also leads on iOS requirement (14.0 vs 16.6). On price, update cadence, ads and device support there is nothing between them.

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

ReactionFlash ships an update every 4 months, CycleChem every 6 months. Both last shipped on October 7, 2026.

## The numbers

| Metric | ReactionFlash | CycleChem |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (41 ratings)](https://appshunter.io/ios/app/reactionflash/id432080813/reviews)** | — |
| Number of ratings | **41** | — |
| Positive reviews | 80.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 6 months |
| Monetization | Free | — |
| Size | 37 MB | 8 MB |
| Requires iOS | **14.0** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Elsevier Limited](https://appshunter.io/developer/1437273934) | [Eric ORDONNEAU](https://appshunter.io/developer/1465804393) |

## 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


### CycleChem

[App page](https://appshunter.io/ios/app/cyclechem/id1465804394)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all games | $0.99 | one-time |


## Frequently asked questions

### Is ReactionFlash free?

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

### Is CycleChem free?

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

### Do ReactionFlash or CycleChem have ads?

Neither ReactionFlash nor CycleChem shows ads.

### Which is updated more often, ReactionFlash or CycleChem?

ReactionFlash ships an update every 4 months, and CycleChem every 6 months. Most recently, ReactionFlash was updated on October 7, 2026 and CycleChem on October 7, 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.*