# Tap OChem vs iORA

The clearest difference is price: iORA at Free against Tap OChem's $4.99. iORA also leads on rating (5.0 vs 4.7) and review sentiment (100% vs 92%). Tap OChem's advantage is ratings volume (39 vs 12). On update cadence, ads, in-app purchases and device support there is nothing between them.

iORA is free to download; Tap OChem costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

iORA holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 39 and 12 respectively. Written reviews point the same way: 92% of Tap OChem's written reviews are positive against 100% of iORA's.

Tap OChem ships an update every 3 months, iORA every 2 months. The most recent releases landed on September 23, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Tap OChem | iORA |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [4.7 (39 ratings)](https://appshunter.io/ios/app/tap-ochem/id579861146/reviews) | **[5.0 (12 ratings)](https://appshunter.io/ios/app/iora-reaction-visualizer/id1609524913/reviews)** |
| Number of ratings | **39** | 12 |
| Positive reviews | 91.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Size | 3.5 GB | 40 MB |
| Requires iOS | **13.2** | 14.3 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tap OChem, LLC](https://appshunter.io/developer/579861209) | [Daniel Ess](https://appshunter.io/developer/1609524915) |

## What reviewers say

### Tap OChem

[App page](https://appshunter.io/ios/app/tap-ochem/id579861146)

Visualize complex organic chemistry reactions and concepts with animated explanations. This app covers a wide range of undergraduate organic chemistry topics, aiding in exam preparation and understanding of molecular behavior.

**Highlights:** Animated organic chemistry reactions, Detailed concept explanations, Electron pushing diagrams, Full-color text descriptions, MCAT, PCAT, OAT, DAT prep, Regular content updates

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

**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 Tap OChem free?

Tap OChem costs $4.99, with no in-app purchases.

### Is iORA free?

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

### Which has better reviews, Tap OChem or iORA?

iORA is rated higher. Tap OChem averages 4.7 out of 5 from 39 ratings, while iORA averages 5.0 from 12 ratings.

### Do Tap OChem or iORA have ads?

Neither Tap OChem nor iORA shows ads.

### Which is updated more often, Tap OChem or iORA?

Tap OChem ships an update every 3 months, and iORA every 2 months. Most recently, Tap OChem was updated on September 23, 2026 and iORA on September 22, 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.*