# EigenAlpha vs Monium

The clearest difference is price: EigenAlpha at Free against Monium's $3.99. Monium's advantage is in-app purchases (none vs 1) and iOS requirement (15.1 vs 26.2). On ads and device support there is nothing between them.

EigenAlpha is free to download; Monium costs $3.99 up front. EigenAlpha sells 1 one-off in-app purchase. Monium asks for nothing beyond the download.

## The numbers

| Metric | EigenAlpha | Monium |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/monium/id6774312164/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Monetization | — | Paid |
| Size | 7 MB | 42 MB |
| Requires iOS | 26.2 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [JT Scientific Consulting LLC](https://appshunter.io/developer/1612699648) | [Jens Koch](https://appshunter.io/developer/6774312166) |

## What reviewers say

### EigenAlpha

[App page](https://appshunter.io/ios/app/eigenalpha/id6772005828)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Unlock | $12.99 | one-time |


### 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 EigenAlpha free?

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

### Is Monium free?

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

### Do EigenAlpha or Monium have ads?

Neither EigenAlpha 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.*