# Atomizer AR vs Ghost Reader

The clearest difference is in-app purchases: Ghost Reader at none against Atomizer AR's 4. Atomizer AR's advantage is device support (6 vs 3) and iOS requirement (15.2 vs 17.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Atomizer AR sells 4 in-app purchases, starting at $1.99 per month. Ghost Reader asks for nothing beyond the download.

Atomizer AR ships an update every 2 weeks, Ghost Reader every 3 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | Atomizer AR | Ghost Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (3 ratings)](https://appshunter.io/ios/app/atomizer-ar-quantum-chemistry/id6449015706/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 137 MB | 23 MB |
| Requires iOS | **15.2** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac, Apple Watch, Vision Pro** | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Wonmo Seong](https://appshunter.io/developer/1625011193) | [Trofim Panasik](https://appshunter.io/developer/1809927555) |

## What reviewers say

### Atomizer AR

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

Explore the quantum world with interactive 3D models of atoms and molecules in augmented reality. Visualize atomic and molecular orbitals, and sketch organic compounds to instantly generate their nomenclature.

**Highlights:** 3D atomic and molecular orbital visualization, Augmented reality integration, Hartree-Fock computational method for MOs, Sketch organic compounds, Automatic SMILES and IUPAC nomenclature generation

**Features:** Apple Watch app

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Californium Pass | $1.99 | per month |
| Californium Pass | $2.99 | per month |
| Einsteinium Pass | $3.99 | per year |
| Einsteinium Pass | $6.99 | per month |


### Ghost Reader

[App page](https://appshunter.io/ios/app/ghost-reader-watch-documents/id6780258970)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Atomizer AR free?

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

### Is Ghost Reader free?

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

### Do Atomizer AR or Ghost Reader have ads?

Neither Atomizer AR nor Ghost Reader shows ads.

### Which is updated more often, Atomizer AR or Ghost Reader?

Atomizer AR ships an update every 2 weeks, and Ghost Reader every 3 weeks. Most recently, Atomizer AR was updated on October 24, 2026 and Ghost Reader on October 24, 2026.

---

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