# ReactionFlash vs Ultimate Chemistry Calculator

The clearest difference is review sentiment: Ultimate Chemistry Calculator at 100% against ReactionFlash's 81%. Ultimate Chemistry Calculator also leads on rating (5.0 vs 4.8) and iOS requirement (10.0 vs 14.0). ReactionFlash's advantage is ratings volume (42 vs 4). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Ultimate Chemistry Calculator holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: ReactionFlash has 42 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 81% of ReactionFlash's written reviews are positive against 100% of Ultimate Chemistry Calculator's.

## The numbers

| Metric | ReactionFlash | Ultimate Chemistry Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (42 ratings)](https://appshunter.io/ios/app/reactionflash/id432080813/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/ultimate-chemistry-calculator/id1464740526/reviews)** |
| Number of ratings | **42** | 4 |
| Positive reviews | 80.6% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Monetization | Free | Free |
| Size | 37 MB | 1 MB |
| Requires iOS | 14.0 | **10.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Elsevier Limited](https://appshunter.io/developer/1437273934) | [Harold Iwen](https://appshunter.io/developer/1464740525) |

## 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


### Ultimate Chemistry Calculator

[App page](https://appshunter.io/ios/app/ultimate-chemistry-calculator/id1464740526)

This app offers nine specialized calculators for mole-related conversions, including grams to moles and moles to particles (atoms or molecules). It visually sets up conversion problems, allowing users to input numbers and calculate results. A review section provides a brief overview of mole conversions.

**Highlights:** Nine specialized mole conversion calculators, Grams to Moles to Particles conversions, Molecule to Atom conversion, Visual problem setup, Integrated review section

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ReactionFlash free?

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

### Is Ultimate Chemistry Calculator free?

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

### Which has better reviews, ReactionFlash or Ultimate Chemistry Calculator?

Ultimate Chemistry Calculator is rated higher. ReactionFlash averages 4.8 out of 5 from 42 ratings, while Ultimate Chemistry Calculator averages 5.0 from 4 ratings.

### Do ReactionFlash or Ultimate Chemistry Calculator have ads?

Neither ReactionFlash nor Ultimate Chemistry Calculator shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*