# Thermochemistry vs Atomic Orbitalz

The clearest difference is price: Atomic Orbitalz at $0.99 against Thermochemistry's $3.99. Atomic Orbitalz also leads on iOS requirement (12.0 vs 17.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

Thermochemistry costs $3.99 and Atomic Orbitalz $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Thermochemistry ships an update every 4 months, Atomic Orbitalz every 8 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Thermochemistry | Atomic Orbitalz |
| --- | --- | --- |
| Price | $3.99 | **$0.99** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 8 months |
| Monetization | — | Paid |
| Size | 1 MB | 63 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Roman Volinsky](https://appshunter.io/developer/977951850) | [Jeremy Burkett](https://appshunter.io/developer/1254864326) |

## What reviewers say

### Thermochemistry

[App page](https://appshunter.io/ios/app/thermochemistry/id1095024444)

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Thermochemistry free?

Thermochemistry costs $3.99, with no in-app purchases.

### Is Atomic Orbitalz free?

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

### Do Thermochemistry or Atomic Orbitalz have ads?

Neither Thermochemistry nor Atomic Orbitalz shows ads.

### Which is updated more often, Thermochemistry or Atomic Orbitalz?

Thermochemistry ships an update every 4 months, and Atomic Orbitalz every 8 months. Most recently, Thermochemistry was updated on November 6, 2026 and Atomic Orbitalz 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.*