# ReactionFlash vs BOT Chemistry

The clearest difference is monetization model: ReactionFlash at free against BOT Chemistry's subscription. ReactionFlash also leads on update cadence (every 4 months vs every 60 months) and ratings volume (41 vs 1). BOT Chemistry's advantage is rating (5.0 vs 4.8) and iOS requirement (12.0 vs 14.0). On price, ads, 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.

BOT Chemistry holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: ReactionFlash has 41 ratings behind it against 1, so its average is the more settled of the two.

ReactionFlash ships an update every 4 months, BOT Chemistry every 60 months. The most recent releases landed on October 16, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | ReactionFlash | BOT Chemistry |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (41 ratings)](https://appshunter.io/ios/app/reactionflash/id432080813/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/bot-chemistry/id1435821920/reviews)** |
| Number of ratings | **41** | 1 |
| Positive reviews | 80.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 60 months |
| Monetization | **Free** | Subscription |
| Size | 37 MB | 36 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Elsevier Limited](https://appshunter.io/developer/1437273934) | [Peggy Markham](https://appshunter.io/developer/951379850) |

## 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


### BOT Chemistry

[App page](https://appshunter.io/ios/app/bot-chemistry/id1435821920)

Practice for the Chemistry section of the Texas UIL High School Science contest with flashcards and quizzes. Access full content with a school-year subscription for the current contest data.

**Highlights:** Study mode with flashcards, Quiz mode for knowledge testing, Practice for UIL High School Science contest, Access to current school year data, Subscription for full content

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ReactionFlash free?

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

### Is BOT Chemistry free?

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

### Which has better reviews, ReactionFlash or BOT Chemistry?

BOT Chemistry is rated higher. ReactionFlash averages 4.8 out of 5 from 41 ratings, while BOT Chemistry averages 5.0 from 1 ratings.

### Do ReactionFlash or BOT Chemistry have ads?

Neither ReactionFlash nor BOT Chemistry shows ads.

### Which is updated more often, ReactionFlash or BOT Chemistry?

ReactionFlash ships an update every 4 months, and BOT Chemistry every 60 months. Most recently, ReactionFlash was updated on October 16, 2026 and BOT Chemistry on October 11, 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.*