Comparison

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.

Head to head
About

Shor's algorithm

Features
Read full description

This app is a demonstration of Shor's algorithm. You can get some help to understand Shor's algorithm.

About

Ket Steps

Features
Read full description

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

Shor's algorithm2 screens
Ket Steps4 screens

Verdict

The call

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Shor's algorithm sells 3 one-off in-app purchases. Ket Steps asks for nothing beyond the download.

UpkeepUpdate frequency

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.

Scorecard3 real differences ยท 3 level
Shor's algorithm versus Ket Steps: the parameters behind the verdict, then further details
ParameterShor's algorithmKet Steps
PriceFreeFree
Update frequencyEvery 6 monthsEvery 2 weeks โ€” better
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 โ€” better18.0
Further details โ€” not scored
Size7 MB7 MB
Age rating4+4+
DeveloperSungjun KimYARON AMIR BENJAMIN DR. GOLDSTEIN

In-app purchases

3 purchases

Shor's algorithm

One-time3
  • coffee$0.99
  • latte$4.99
  • whopper set$9.99
None

Ket Steps

No in-app purchases

Questions

Is Shor's algorithm free?
Shor's algorithm is free to download, with in-app purchases available.
Is Ket Steps free?
Ket Steps is free to download, with no in-app purchases.
Do Shor's algorithm or Ket Steps have ads?
Neither Shor's algorithm nor Ket Steps shows ads.
Which is updated more often, Shor's algorithm or Ket Steps?
Shor's algorithm ships an update every 6 months, and Ket Steps every 2 weeks. Most recently, Shor's algorithm was updated on October 10, 2026 and Ket Steps on October 14, 2026.

Other comparisons