# Search PubChem vs Atomizer AR

The clearest difference is rating: Search PubChem at 5.0 against Atomizer AR's 4.0. Search PubChem also leads on in-app purchases (none vs 4). Atomizer AR's advantage is update cadence (every 10 days vs every 9 months) and review sentiment (100% vs 75%). On price, ratings volume and ads there is nothing between them.

Both are free to download. Atomizer AR sells 4 in-app purchases, starting at $4.99 per month. Search PubChem asks for nothing beyond the download.

Search PubChem holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 5 and 3 respectively. Written reviews complicate that: 75% of Search PubChem's written reviews are positive against 100% of Atomizer AR's, so the app with the better star average is not the one people write more warmly about.

Search PubChem ships an update every 9 months, Atomizer AR every 10 days. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Search PubChem | Atomizer AR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/search-pubchem/id1369742632/reviews)** | [4.0 (3 ratings)](https://appshunter.io/ios/app/atomizer-ar-quantum-chemistry/id6449015706/reviews) |
| Number of ratings | **5** | 3 |
| Positive reviews | 75.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 10 days** |
| Monetization | **Free** | Freemium |
| Size | 9 MB | 137 MB |
| Requires iOS | 26.0 | **15.2** |
| Devices | iPhone, iPad, Mac, Vision Pro | **iPhone, iPad, iPod, Mac, Apple Watch, Vision Pro** |
| Age rating | 17+ | 4+ |
| Developer | [Jae-Seung Lee](https://appshunter.io/developer/1146296876) | [Wonmo Seong](https://appshunter.io/developer/1625011193) |

## What reviewers say

### Search PubChem

[App page](https://appshunter.io/ios/app/search-pubchem/id1369742632)

Access and manage chemical compound data from the PubChem database. Search for over 111 million compounds, view molecular formulas, weights, and structures, and create and track custom solutions with detailed composition information.

**Highlights:** Search PubChem database, View molecular formula, weight, and structure, Store compound information, Create and manage custom solutions, Track solution composition in grams and moles, Display 3D compound structures, Share solution data via CSV

**In-app purchases:** none


### Atomizer AR

[App page](https://appshunter.io/ios/app/atomizer-ar-quantum-chemistry/id6449015706)

Visualize atomic and molecular orbitals in 3D, render electron density clouds, and explore molecules in augmented reality. Calculate molar mass, balance equations, and sketch molecules in 2D.

**Highlights:** 3D atomic and molecular orbital visualization, Electron density cloud rendering, WebXR augmented reality exploration, Molecule control via gyroscope, Molar mass calculation, Equation balancing and stoichiometry, 2D molecule sketching

**Features:** Apple Watch app

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Californium Pass | $4.99 | per month |
| Einsteinium Pass | $12.99 | per month |
| Californium Yearly | $39.99 | per year |
| Einsteinium Yearly | $99.00 | per year |


## Frequently asked questions

### Is Search PubChem free?

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

### Is Atomizer AR free?

Atomizer AR is free to download, with in-app purchases available.

### Which has better reviews, Search PubChem or Atomizer AR?

Search PubChem is rated higher. Search PubChem averages 5.0 out of 5 from 5 ratings, while Atomizer AR averages 4.0 from 3 ratings.

### Do Search PubChem or Atomizer AR have ads?

Neither Search PubChem nor Atomizer AR shows ads.

### Which is updated more often, Search PubChem or Atomizer AR?

Search PubChem ships an update every 9 months, and Atomizer AR every 10 days. Most recently, Search PubChem was updated on November 2, 2026 and Atomizer AR on November 3, 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.*