Ket Steps

Quantum math, properly typed

Free · Designed for iPad. Not verified for macOS.

Ket Steps is a symbolic workpad for quantum states. Define kets, bras, and operators in standard bra-ket notation, compose them, and get exact results (fractions, imaginary units, and ...) without numeric approximation unless you ask for it. Each line is a typed, labeled object. Select two, apply an operation, and the result appears contrasted against the input for quick validation, not just the answer. Every result exports to LaTeX with a single tap. **What it does today** Single- and multi-qubit states, tensor products, standard operators (Pauli X/Y/Z, Hadamard, and more), inner products, outer products, and operator-ket application. Exact symbolic arithmetic throughout. Norm validation on every state. A growing library of named objects to insert with one tap. **Where it's going** Ket Steps aims to become a complete toolkit for quantum information theory. Join our Kets on their journey. **Privacy** Everything stays on your device. No data is collected, transmitted, or stored anywhere else.

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You've got 1st Qubit. But what about 2nd Qubit? This version update focusses on Tensor Products and the fun you can have once multiple Qubits get involved: / Look at Schmidt Decomposition of 2-factor Tensor Products / Explore quantum teleportation: Assign Alice a qubit and share an ebit with Bob observe spooky action in action of how Alice' qubit state teleports over to Bob in sequence / Grapple with dense coding: Share an ebit between Alice and Bob and follow the step by step instructions of how Alice can prepare 2 qubit communication by sharing 1 qubit and 2 bits of classic information Also: Cleanup under the hood / More information on states & stuff: Get SVD for operators, learn about entanglement rate, and more to discover / Performance boost ?! The app should now be faster, especially when you work with larger worksheets & more complex objects

The developer, YARON AMIR BENJAMIN DR. GOLDSTEIN, 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 Not Collected

    The developer does not collect any data from this app.

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    Provider
    YARON AMIR BENJAMIN DR. GOLDSTEIN
    Size
    7.2 MB
    Category
    Education
    Compatibility
    Requires iOS 18.0 or later.
    • iPhone
      Requires iOS 18.0 or later.
    • iPad
      Requires iPadOS 18.0 or later.
    • Mac
      Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 2.0 or later.
    Languages
    English
    Age Rating
    4+
    Copyright
    © Yaron Goldstein 2026