# Steiner Tree vs Quantum Atlas

The clearest difference is in-app purchases: Steiner Tree at none against Quantum Atlas's 1. Steiner Tree also leads on iOS requirement (12.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Quantum Atlas sells 1 one-off in-app purchase. Steiner Tree asks for nothing beyond the download.

## The numbers

| Metric | Steiner Tree | Quantum Atlas |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/quantum-atlas/id6771914560/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 45 months | — |
| Monetization | — | Free |
| Size | 1 MB | 37 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Reinhard MAENNER](https://appshunter.io/developer/578568275) | [Elisha Perelman](https://appshunter.io/developer/6771914562) |

## What reviewers say

### Steiner Tree

[App page](https://appshunter.io/ios/app/steiner-tree/id590732192)

**Features:** macOS Compatibility

**In-app purchases:** none


### Quantum Atlas

[App page](https://appshunter.io/ios/app/quantum-atlas/id6771914560)

Explore the fundamental building blocks of reality with interactive simulations and clear explanations of quantum physics concepts. This pocket-sized reference makes complex theories accessible through a particle table, concept cards, and hands-on experiments.

**Highlights:** Interactive particle table, 12 concept cards for quick learning, 22 touchable physics simulations, Theory atlases for deeper understanding, Decay and Spectra explorers, Offline and private usage

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Quantum Atlas Pro | $2.99 | one-time |


## Frequently asked questions

### Is Steiner Tree free?

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

### Is Quantum Atlas free?

Quantum Atlas is free to download, with in-app purchases available.

### Do Steiner Tree or Quantum Atlas have ads?

Neither Steiner Tree nor Quantum Atlas shows ads.

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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.*