Comparison

Ket Steps vs QASM Studio

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
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.

About

QASM Studio

Features
Read full description

QASM Studio brings quantum circuit simulation to your iPhone and iPad. Write quantum programs in OpenQASM 2.0, the standard language used by Qiskit and IBM Quantum. The built-in state vector simulator runs entirely on your device โ€” no internet, no server, no account required. KEY FEATURES - Native OpenQASM 2.0 editor with monospaced syntax - Real-time circuit diagram โ€” see your circuit as you type - Local quantum simulator - State vector view with mathematical notation - Measurement results with probability distribution - Quantum gates: H, X, Y, Z, S, T, CX, CZ, SWAP, Rx, Ry, Rz, U1, U2, U3 and more INCLUDED TEMPLATES - Bell State โ€” quantum entanglement - GHZ State โ€” three-qubit entanglement - Superposition โ€” single qubit Hadamard - Grover's Algorithm โ€” quantum search - Quantum Fourier Transform - Deutsch's Algorithm โ€” first quantum advantage - Bernstein-Vazirani โ€” hidden bitstring search - Blank โ€” start from scratch PERFECT FOR - Students learning quantum computing - Qiskit users who want a mobile playground - Anyone curious about quantum mechanics - Quick experimentation away from your laptop NO ACCOUNTS, NO TRACKING QASM Studio works completely offline. Your code never leaves your device. No data is collected, no analytics, no advertising.

Screenshots

Ket Steps4 screens
QASM Studio3 screens

Verdict

The call

The clearest difference is iOS requirement: QASM Studio at 15.6 against Ket Steps's 18.0. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference ยท 5 level
Ket Steps versus QASM Studio: the parameters behind the verdict, then further details
ParameterKet StepsQASM Studio
PriceFreeFree
Update frequencyEvery 2 weeksโ€”
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS18.015.6 โ€” better
Further details โ€” not scored
Size7 MB0 MB
Age rating4+4+
DeveloperYARON AMIR BENJAMIN DR. GOLDSTEINSungjun Kim

In-app purchases

None

Ket Steps

No in-app purchases

None

QASM Studio

No in-app purchases

Questions

Is Ket Steps free?
Ket Steps is free to download, with no in-app purchases.
Is QASM Studio free?
QASM Studio is free to download, with no in-app purchases.
Do Ket Steps or QASM Studio have ads?
Neither Ket Steps nor QASM Studio shows ads.

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