Shor's algorithm vs Ket Steps
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Shor's algorithm
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This app is a demonstration of Shor's algorithm. You can get some help to understand Shor's algorithm.
Ket Steps
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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.
Screenshots
Verdict
The clearest difference is in-app purchases: Ket Steps at none against Shor's algorithm's 3. Ket Steps also leads on update cadence (every 2 weeks vs every 6 months). Shor's algorithm's advantage is iOS requirement (16.0 vs 18.0). On price, ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Shor's algorithm sells 3 one-off in-app purchases. Ket Steps asks for nothing beyond the download.
Shor's algorithm ships an update every 6 months, Ket Steps every 2 weeks. The most recent releases landed on October 10, 2026 and October 14, 2026 respectively.
| Parameter | Shor's algorithm | Ket Steps |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 months | Every 2 weeks โ better |
| Ads | No | No |
| In-app purchases | Yes | No โ better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 โ better | 18.0 |
| Further details โ not scored | ||
| Size | 7 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Sungjun Kim | YARON AMIR BENJAMIN DR. GOLDSTEIN |
In-app purchases
Shor's algorithm
- coffee$0.99
- latte$4.99
- whopper set$9.99
Ket Steps
No in-app purchases
Questions
Is Shor's algorithm free?
Is Ket Steps free?
Do Shor's algorithm or Ket Steps have ads?
Which is updated more often, Shor's algorithm or Ket Steps?
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