# ReactionFlash vs Pro Chemical Bonding

The clearest difference is review sentiment: ReactionFlash at 81% against Pro Chemical Bonding's 0%. ReactionFlash also leads on ads (none vs shown) and update cadence (every 4 months vs every 32 months). Pro Chemical Bonding's advantage is iOS requirement (12.0 vs 14.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReactionFlash ships an update every 4 months, Pro Chemical Bonding every 32 months. The most recent releases landed on October 23, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | ReactionFlash | Pro Chemical Bonding |
| --- | --- | --- |
| 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** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 4 months** | Every 32 months |
| Monetization | **Free** | Ad-supported |
| Size | 37 MB | 11 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Elsevier Limited](https://appshunter.io/developer/1437273934) | [gangadhar goud](https://appshunter.io/developer/898647800) |

## 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


### Pro Chemical Bonding

[App page](https://appshunter.io/ios/app/pro-chemical-bonding/id1505101742)

Master the fundamental concept of chemical bonding with this educational tool. It offers learning modules and a simple exam to reinforce understanding and support academic achievement.

**Highlights:** Learn chemical bonding concepts, Take simple exams, Supports academic success, Educational content

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ReactionFlash free?

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

### Is Pro Chemical Bonding free?

Pro Chemical Bonding is free to download, with no in-app purchases.

### Do ReactionFlash or Pro Chemical Bonding have ads?

Pro Chemical Bonding shows ads; ReactionFlash does not.

### Which is updated more often, ReactionFlash or Pro Chemical Bonding?

ReactionFlash ships an update every 4 months, and Pro Chemical Bonding every 32 months. Most recently, ReactionFlash was updated on October 23, 2026 and Pro Chemical Bonding on October 10, 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.*