# Chemistry Formula Practice vs iORA

The clearest difference is rating: iORA at 5.0 against Chemistry Formula Practice's 4.3. iORA also leads on review sentiment (100% vs 70%) and update cadence (every 2 months vs every 11 months). Chemistry Formula Practice's advantage is iOS requirement (7.0 vs 14.3). 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.

iORA holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 3 and 12 respectively. Written reviews point the same way: 70% of Chemistry Formula Practice's written reviews are positive against 100% of iORA's.

Chemistry Formula Practice ships an update every 11 months, iORA every 2 months. The most recent releases landed on October 12, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Chemistry Formula Practice | iORA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (3 ratings)](https://appshunter.io/ios/app/chemistry-formula-practice/id422957082/reviews) | **[5.0 (12 ratings)](https://appshunter.io/ios/app/iora-reaction-visualizer/id1609524913/reviews)** |
| Number of ratings | 3 | **12** |
| Positive reviews | 70.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 36 MB | 40 MB |
| Requires iOS | **7.0** | 14.3 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Carolina Biological Supply](https://appshunter.io/developer/413708533) | [Daniel Ess](https://appshunter.io/developer/1609524915) |

## What reviewers say

### Chemistry Formula Practice

[App page](https://appshunter.io/ios/app/chemistry-formula-practice/id422957082)

This app helps students master naming chemical compounds and writing formulas. It offers practice across various compound types, allowing users to choose their learning direction from formula to name or vice versa. Teachers can also utilize classroom codes for leaderboards and assessments.

**Highlights:** Name ionic and molecular compounds, Write chemical formulas, Practice acids, bases, and polyatomic ions, Learn hydrocarbons and organic functional groups, Choose learning direction (formula to name or name to formula), Teacher classroom leaderboards and assessments

**Features:** macOS Compatibility

**In-app purchases:** none


### iORA

[App page](https://appshunter.io/ios/app/iora-reaction-visualizer/id1609524913)

Visualize chemical reactions in 3D using quantum-mechanical simulations. This free, interactive application makes complex chemistry concepts accessible and engaging for learners.

**Highlights:** 3D chemical reaction visualization, Quantum-mechanical simulations, Interactive learning, Easy to use interface, Educational tool

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Chemistry Formula Practice free?

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

### Is iORA free?

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

### Which has better reviews, Chemistry Formula Practice or iORA?

iORA is rated higher. Chemistry Formula Practice averages 4.3 out of 5 from 3 ratings, while iORA averages 5.0 from 12 ratings.

### Do Chemistry Formula Practice or iORA have ads?

Neither Chemistry Formula Practice nor iORA shows ads.

### Which is updated more often, Chemistry Formula Practice or iORA?

Chemistry Formula Practice ships an update every 11 months, and iORA every 2 months. Most recently, Chemistry Formula Practice was updated on October 12, 2026 and iORA on October 9, 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.*