# ReactionFlash vs ModelAR

The clearest difference is rating: ReactionFlash at 4.8 against ModelAR's 3.5. ReactionFlash also leads on review sentiment (81% vs 70%) and ratings volume (42 vs 11). ModelAR's advantage is iOS requirement (11.0 vs 14.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

ReactionFlash holds the better App Store score, 4.8 against 3.5. Both are backed by a comparable volume of ratings — 42 and 11 respectively. Written reviews point the same way: 81% of ReactionFlash's written reviews are positive against 70% of ModelAR's.

ReactionFlash ships an update every 4 months, ModelAR every 6 months. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | ReactionFlash | ModelAR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (42 ratings)](https://appshunter.io/ios/app/reactionflash/id432080813/reviews)** | [3.5 (11 ratings)](https://appshunter.io/ios/app/modelar-organic-chemistry/id1438760201/reviews) |
| Number of ratings | **42** | 11 |
| Positive reviews | **80.6% of reviews** | 70.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 6 months |
| Monetization | Free | Free |
| Size | 37 MB | 118 MB |
| Requires iOS | 14.0 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Elsevier Limited](https://appshunter.io/developer/1437273934) | [Alchemie Solutions, Inc](https://appshunter.io/developer/916843852) |

## 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


### ModelAR

[App page](https://appshunter.io/ios/app/modelar-organic-chemistry/id1438760201)

Explore and build 3D chemical structures in real space with augmented reality. This tool transforms complex organic chemistry concepts into an interactive and playful learning experience, offering an immersive alternative to traditional study methods.

**Highlights:** Create and explore 3D organic molecules, Augmented reality interaction, Intuitive drag-and-drop building, Stereochemistry visualization, Variety of molecule experimentation, Simple and clean design

**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 ModelAR free?

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

### Which has better reviews, ReactionFlash or ModelAR?

ReactionFlash is rated higher. ReactionFlash averages 4.8 out of 5 from 42 ratings, while ModelAR averages 3.5 from 11 ratings.

### Do ReactionFlash or ModelAR have ads?

Neither ReactionFlash nor ModelAR shows ads.

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

ReactionFlash ships an update every 4 months, and ModelAR every 6 months. Most recently, ReactionFlash was updated on October 23, 2026 and ModelAR 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.*