# Ket Steps — Quantum math, properly typed

> Quantum math, properly typed (iPhone/iPad app by YARON AMIR BENJAMIN DR. GOLDSTEIN.)

- Source: https://appshunter.io/ios/app/ket-steps/id6762529698 (this page in markdown: same URL + `.md`)
- Developer: [YARON AMIR BENJAMIN DR. GOLDSTEIN](https://appshunter.io/developer/1850455880)
- Category: Education, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 18.0 · 7 MB
- Languages: English
- Released: 2026-04-23
- Data updated: 2026-05-22
- User reviews in markdown: https://appshunter.io/ios/app/ket-steps/id6762529698/reviews.md

## What is Ket Steps?

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.


## Version history (last 3 releases)

### 1.4 — 2026-05-18

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

### 1.2.2 — 2026-05-05

Beware the measurement postulate!
Inspect the spectra of your states, see the potential outcomes of observables given a state, and simulate measurements to create samples

Update 1.2.2:
/ Measurement projectors now part of measurement sheet
/ Some improvements / corrections in the engine for measurements
/ SVD Decomposition for general operators
/ 2-Qubit Bell States in library of pre-defined objects

### 1.0 — 2026-04-23

No release notes.

## More apps by YARON AMIR BENJAMIN DR. GOLDSTEIN

- [TeaLoveLog](https://appshunter.io/ios/app/tealovelog/id6754843586)
- [σT](https://appshunter.io/ios/app/t/id6756549182)
- [YARON FA](https://appshunter.io/ios/app/yaron-fa/id6757681266)
- [David's Dual Time Keeper](https://appshunter.io/ios/app/davids-dual-time-keeper/id6757792838)
- [Markdown My Words](https://appshunter.io/ios/app/markdown-my-words/id6764109236)

All apps by YARON AMIR BENJAMIN DR. GOLDSTEIN: https://appshunter.io/developer/1850455880

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-22.*