---
title: "Monium - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "Monium puts superconducting-qubit physics in your pocket — a mobile companion to the open-source scqubits library, built for researchers, students, and the quantum-curious.  Pick a qubit, tune its par"
---

# Monium — United States
> Superconducting qubit lab

![Monium App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/df/4a/61/df4a610a-36d2-fd30-832f-7b616faddd12/AppIcon-0-0-1x_U007emarketing-0-6-0-85-220.png/434x0w.png)

**Developer:** [Jens Koch](https://apptail.io/developer/jens-koch-odfQnc)
**Category:** Education
**Rating:** 3.7/5 (3 ratings)
**Price:** $3.99
**Bundle ID:** com.nurmel.monium
**Store:** Apple App Store
**Country:** United States
**Version:** 1.0.1 (released 2026-10-13)
**Original Release:** 2026-06-11
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id6774312164)
**AppTail Page:** [https://apptail.io/app/monium-HlyA/united-states](https://apptail.io/app/monium-HlyA/united-states)

## Monium Description
Monium puts superconducting-qubit physics in your pocket — a mobile companion to the open-source scqubits library, built for researchers, students, and the quantum-curious.

Pick a qubit, tune its parameters with live sliders, and watch the physics update in real time:

• Energy spectrum vs. any swept parameter
• Wavefunctions over the potential (and in the charge basis)
• Matrix elements as a heatmap, and vs. the swept parameter
• T1 / T2 coherence times per noise channel
• Exact computed values behind every plot, as tables

Supported qubits: Transmon, Tunable Transmon (SQUID), and Fluxonium.

Built for real work:
• Enter the Josephson energy the way you measure it — critical current, junction inductance, or room-temperature normal-state resistance (with a cryo/room ratio).
• Save and reload presets per qubit.
• Convergence indicators so you can trust the numbers.

Everything runs on-device. No account, no ads, no tracking, no network — your work stays on your phone.

Monium mirrors scqubits' conventions, and its results are tested against it: energy spectra, matrix elements and coherence times for all three qubits are checked against the Python library's own output.

## Monium Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/29/7c/51/297c5186-2f01-a905-5080-143462ab9fa8/01-energies.png/1320x2868.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/68/e8/6c/68e86c35-b50a-5e73-d705-58447b2cbf65/02-wavefunctions.png/1320x2868.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/12/d0/fc/12d0fc97-0a0f-2a9f-2a65-3e8225f3b87b/03-matrix-elements.png/1320x2868.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/99/f4/e5/99f4e5c2-a1a5-05a5-ccaf-14be33753280/04-matrix-element-scan.png/1320x2868.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/9d/58/cf/9d58cf56-f8cc-8347-6920-3820cf98e07a/05-coherence.png/1320x2868.png)

## Monium Rating Breakdown in United States
- 5 stars: 2 (67%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 1 (33%)






## Monium Available In
- [United States](https://apptail.io/app/monium-HlyA/united-states)
- [Canada](https://apptail.io/app/monium-HlyA/canada)
- [Switzerland](https://apptail.io/app/monium-HlyA/switzerland)
- [Singapore](https://apptail.io/app/monium-HlyA/singapore)

---

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