# entanglement entropy vs Monium

The clearest difference is price: entanglement entropy at Free against Monium's $3.99. Monium's advantage is iOS requirement (16.0 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

entanglement entropy is free to download; Monium costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | entanglement entropy | Monium |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | — | **[3.7 (3 ratings)](https://appshunter.io/ios/app/monium/id6774312164/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 4 months |
| Monetization | — | Paid |
| Size | 5 MB | 37 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Sungjun Kim](https://appshunter.io/developer/1602461985) | [Jens Koch](https://appshunter.io/developer/6774312166) |

## What reviewers say

### entanglement entropy

[App page](https://appshunter.io/ios/app/entanglement-entropy/id6737193148)

**Features:** macOS Compatibility

**In-app purchases:** none


### Monium

[App page](https://appshunter.io/ios/app/monium/id6774312164)

Explore superconducting qubit physics with interactive simulations. Tune parameters, visualize energy spectra, wavefunctions, and coherence times in real-time. Supports Transmon, Tunable Transmon, and Fluxonium qubits.

**Highlights:** Interactive qubit parameter tuning, Real-time energy spectrum visualization, Wavefunction and potential plotting, Coherence time calculations, Matrix element heatmaps, Save and reload qubit presets

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is entanglement entropy free?

entanglement entropy is free to download, with no in-app purchases.

### Is Monium free?

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

### Do entanglement entropy or Monium have ads?

Neither entanglement entropy nor Monium 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.*