Every number says where it came from — measured on your device, measured on our engine, or a labelled reference. No estimates dressed up as results. Free to start.
Design, run and understand quantum circuits on iPhone, iPad and Mac.
SwiftQuantum is a native quantum circuit IDE for students, researchers and developers. Build a circuit, run it, and see what it does — with clear rules about where your work goes.
BUILD CIRCUITS YOUR WAY
• Drag-and-drop editor. Free: H, X, Y, Z and CNOT; Scholar adds S, T, rotations, CZ and SWAP; Master adds Toffoli and Fredkin
• Start from ready-made circuits such as Bell and GHZ states
• See measurement probabilities for every run
RUN ON YOUR DEVICE
• Free plan: the Standard engine runs circuits up to 10 qubits on your device
• Scholar: the Turbo engine simulates general circuits up to 25 qubits on your device; Master adds the HyperCore engine
• Every engine computes exactly the circuit you drew, in shot mode too
• On Master and Enterprise, Clifford (stabilizer) circuits up to 127 qubits run on your device — tested on a real iPhone in airplane mode
• Circuits with non-Clifford gates run on your device up to 25 qubits; larger ones aren’t simulated, on the device or on our server, and nothing is sent. A circuit reaches our server only after you tap Send
• Benchmark (Home > Quick Actions, when signed in): median run time per engine with a 95% confidence interval, measured on your device
AI THAT STAYS ON YOUR DEVICE
• Optional: download a compact AI model once, describe a circuit in plain language, and get a circuit back — generated with no network
• Your prompts stay on your device
• Accepted results are sealed into a local, tamper-evident record you can check in Settings. A seal shows the generation happened on your device; it does not guarantee the circuit is correct
• Off by default; delete the model whenever you like
ERROR CORRECTION (MASTER AND ENTERPRISE)
• Run surface-code experiments on our engine: choose the code distance, physical error rate and decoder
• See the logical error rate from Monte Carlo shots with a 95% confidence interval
• The error rate chart says where each curve comes from: measured on our engine, measured on your device (distance 3, offline), or a dashed reference formula
TAKE YOUR WORK WITH YOU
• Import and export OpenQASM; on Master and Enterprise, also convert circuits to PennyLane and CUDA-Q code — each conversion shows its measured state overlap with your circuit, or “Not verified”
• Paid plans: inspect a circuit's unitary matrix; Master and Enterprise also compare gate fidelity
KEEP A RECORD OF WHAT YOU RAN
• Q-Footprints: an opt-in practice log of the simulations you run on your device
• Your circuit itself is never sent — only the shape of the run
• A seal shows a run happened; it is not a skill score or a certification
BUILT FOR THE WAY YOU WORK
• Native on iPhone, iPad and Mac
• Available in 7 languages
• Free to start
Who it's for: students learning quantum computing by doing, educators teaching with real circuits, and developers prototyping quantum programs.
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SwiftQuantum is free to download with optional auto-renewable subscriptions. Payment is charged to your Apple ID at confirmation of purchase and renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Prices are shown in-app.
SwiftQuantum is an independent tool for education and research and is not affiliated with or endorsed by any quantum hardware vendor.
Terms of Use: https://legal.swiftquantum.tech/en/terms/
Privacy Policy: https://legal.swiftquantum.tech/en/privacy/
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Plans you can read at a glance.
• Plan names match everywhere: the subscription screen now says Scholar and Master, the same names shown on your plan badge and in limit messages. (The cards used to say Pro and Team.)
• Every plan limit is a number. Home shows today's runs used and runs left, and the saved-circuit limit, as figures.
• When you reach today's simulation limit, the app tells you how many runs your plan has, that the counter resets at midnight on your device, and which plan raises the limit. Saved circuits and results stay available.
• Subscription Limits (Settings) no longer lists Journal, SQL Optimizer or Oracle rows: SwiftQuantum has none of these features. Saved circuits now sit under “Storage & Export”.
• Numbers follow the language you chose in the app, and plan screens that still showed English text in other languages are translated.
• The sign-in prompt states the real number: sign in for 10 simulations a day.
• Clearer answers for large circuits: a circuit with non-Clifford gates above 25 qubits now stops on your device with a note on what to change, and nothing is sent. Server errors appear in your language.
• Changing your password keeps you signed in on this device.
• The business and privacy information screens now show our registered company details and where your data is stored.
Thank you for building with us.
Version 10.3.6
The developer, EUNMIN PARK, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
Purchases
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Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Contact Info
Diagnostics
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More