# Atomic Orbitalz vs atom.sim

The clearest difference is price: atom.sim at Free against Atomic Orbitalz's $0.99. atom.sim also leads on update cadence (every 6 weeks vs every 8 months). Atomic Orbitalz's advantage is iOS requirement (12.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

atom.sim is free to download; Atomic Orbitalz costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Atomic Orbitalz ships an update every 8 months, atom.sim every 6 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | Atomic Orbitalz | atom.sim |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 6 weeks** |
| Monetization | Paid | — |
| Size | 63 MB | 79 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jeremy Burkett](https://appshunter.io/developer/1254864326) | [Hans Kovi](https://appshunter.io/developer/1493527465) |

## What reviewers say

### Atomic Orbitalz

[App page](https://appshunter.io/ios/app/atomic-orbitalz/id1271104130)

Visualize and manipulate 3D atomic orbitals for a hydrogen atom. Explore s, p, d, and f orbitals from any angle, and superimpose them to understand their interactions. Ideal for chemistry students and enthusiasts.

**Highlights:** 3D atomic orbital models, View and manipulate orbitals, Explore s, p, d, and f orbitals, Superimpose orbitals for interaction study, Textbook companion, Rotate models from any angle

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

**In-app purchases:** none


### atom.sim

[App page](https://appshunter.io/ios/app/atomsim/id1493527466)

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

**In-app purchases:** none


## Frequently asked questions

### Is Atomic Orbitalz free?

Atomic Orbitalz costs $0.99, with no in-app purchases.

### Is atom.sim free?

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

### Do Atomic Orbitalz or atom.sim have ads?

Neither Atomic Orbitalz nor atom.sim shows ads.

### Which is updated more often, Atomic Orbitalz or atom.sim?

Atomic Orbitalz ships an update every 8 months, and atom.sim every 6 weeks. Most recently, Atomic Orbitalz was updated on October 24, 2026 and atom.sim 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.*