SwiftQuantum: Quantum IDE

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 with the standard gates: H, X, Y, Z, S, T, rotations, CNOT, CZ, SWAP, Toffoli and more
• 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
• Paid plans: Turbo and HyperCore engines simulate general circuits up to 25 qubits on your device
• Every engine computes exactly the circuit you drew, in shot mode too
• On Team and Enterprise, Clifford (stabilizer) circuits up to 127 qubits run on your device — tested on a real iPhone in airplane mode
• A circuit goes to our server only when it needs it (more than 25 qubits with non-Clifford gates), and 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 (TEAM 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 Team 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; Team and Enterprise also compare gate fidelity

KEEP A RECORD OF WHAT YOU RAN
• Q-Footprints: