Comparison

Quantum Retriever vs Monium

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Quantum Retriever

Features
Read full description

Not all AIs work the same. With Quantum Retriever, you can search and compare their results. You can compare their answers, to see where they agree and where they don't. You can synthesize their results for more full answers. You can also evaluate specific models head to head, including many open source and experimental models. You can see how they rank on speed, token count, math and logic interpretation, and more. All your queries are only saved locally on your device, and are not shared with anyone outside this app.

About

Monium

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
Read full 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 is validated against it, so the numbers match the desktop tool you already trust.

Screenshots

Quantum Retriever4 screens
Monium4 screens

Verdict

The call

The clearest difference is price: Quantum Retriever at Free against Monium's $3.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

Scorecard1 real difference · 8 level
Quantum Retriever versus Monium: the parameters behind the verdict, then further details
ParameterQuantum RetrieverMonium
PriceFree — better$3.99
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
Update frequencyEvery 9 days—
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.115.1
Further details — not scored
Size27 MB42 MB
Age rating12+4+
DeveloperJames BeachJens Koch

In-app purchases

None

Quantum Retriever

No in-app purchases

None

Monium

No in-app purchases

Questions

Is Quantum Retriever free?
Quantum Retriever is free to download, with no in-app purchases.
Is Monium free?
Monium costs $3.99, with no in-app purchases.
Do Quantum Retriever or Monium have ads?
Neither Quantum Retriever nor Monium shows ads.

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