Comparison

SQQuantum vs Multiplex

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

Head to head
About

SQQuantum

Features
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SQQuantum Studio: The Universe in Your Hands Welcome to SQQuantum by Sapiens Qualiaβ€”a breathtaking leap in mobile scientific computing. SQQuantum bridges the gap between high-end desktop tensor analysis and accessible mobile education, putting a fully functional, lightning-fast quantum circuit simulator directly onto your iPhone and iPad. Whether you are a university physics student learning the fundamental mechanics of entanglement, a software engineer transitioning into quantum logic, or a researcher testing state-vector mathematics on the go, SQQuantum provides a flawless, professional-grade Integrated Development Environment (IDE) optimized specifically for the Apple ecosystem. OPTIMIZED FOR APPLE SILICON SQQuantum is an engineering masterpiece. Under the hood, it is powered by a custom-written, native C++ state-vector engine utilizing the heavy-duty Eigen mathematical framework. By bridging Swift directly to C++ and compiling natively for Apple’s A-Series and M-Series processors, the app achieves zero-latency, real-time matrix multiplications entirely offline. It natively projects complex quantum physics calculations onto a beautifully fluid, hardware-accelerated SwiftUI canvas without dropping a single frame. POWERFUL FUNCTIONALITY β€’ Dynamic Circuit Canvas: Build complex quantum circuits using multiple qubits. Apply fundamental quantum logic gates including Hadamard (H), Pauli (X, Y, Z), Parametric Phase Shifts (Rx), Controlled-NOT (CX), and Measurement operations. β€’ Interactive 3D Bloch Sphere: Visualize the invisible. Utilizing Apple’s native SceneKit framework, our 3D projector allows you to touch, drag, and rotate the Bloch sphere to intuitively understand qubit vector phases and superpositions in real-time. β€’ Live Probability Distributions: As you build your circuit or drag parameters, the simulator instantly calculates the wave function and renders the exact probability distribution of your quantum states in a vibrant, responsive UI. β€’ Hardware Noise Simulation (NISQ): Experience the reality of modern hardware. Use the dynamic noise slider to inject probabilistic decoherence and environmental noise into your gates, simulating how physical quantum computers actually behave. β€’ Live OpenQASM 3.0 Generation: SQQuantum acts as a true developer tool. As you visually construct your circuit, the app simultaneously compiles industry-standard OpenQASM 3.0 code in a dedicated terminal pane. Copy it with one tap to export and run your exact circuit on real IBM or AWS quantum mainframes. β€’ Instant Entanglement: Instantly load complex quantum phenomena like the Bell State (Quantum Entanglement) and GHZ State with a single tap. PRO iPadOS ARCHITECTURE SQQuantum intelligently adapts to your hardware. On the iPhone, it provides a sleek, highly readable, vertically scrollable interface. On the iPad, the UI transforms into a gorgeous, split-pane professional IDEβ€”featuring a sprawling mathematical workspace on the left, a dedicated hardware inspector on the right, and a full-width code terminal pinned to the bottom. 100% PRIVATE & OFFLINE Science requires focus, not tracking. SQQuantum is 100% offline. It requires zero account sign-ups, utilizes zero cloud processing, contains no advertisements, and collects absolutely zero user data. Your algorithms belong to you. Step into the mathematical fabric of the universe. Download SQQuantum Studio today and start building the future.

About

Multiplex

Features
Read full description

Multiplex is a terminal for people who live inside persistent remote sessions β€” open source, built native for iPhone and iPad. THE WALL Hosts probe concurrently. Every session is a live monitor: its actual last screen lines, red LIVE while attached. See the fleet before attaching; NO SIGNAL reconnects in one tap. Run tmux, or switch a host to herdr β€” one tile per session, agent state from herdr itself. A SESSION WHERE YOU NEED IT On iPad each session opens in a real scene for Stage Manager, Split View, and external displays. Merge windows into tabs and split them back out β€” the SSH connection and scrollback move with the tab, so shells never drop. On iPhone, the wall and terminal share one adaptive full-screen shell. BUILT FOR AI AGENT SESSIONS Start Claude Code, Codex, Pi, Grok Build, Antigravity CLI, or Hermes with a setup script, model, and first prompt in one step. Multiplex spots all six in any pane; helper chips follow the foreground agent β€” commands reach the process receiving your keystrokes; rearrange or add your own, synced everywhere. A message box takes longer prompts: autocorrect, dictation, attached or dropped files land in the pane's directory, sent as one message. Pro lifts the daily chip limit, alerts you when an unwatched turn ends or needs input (Claude Code, Codex, Grok Build on tmux; all agents on herdr), and opens Claude Code prompt history with transcript jumps. FILES & LINKS BESIDE THE TERMINAL Tap a link or path β€” Multiplex confirms the resolved target first. Files open read-only in the β–€ File Viewer: code, rendered Markdown, images, PDFs, sound files, git diffs. Web links can open in an inline βŒ— viewport. On iPad both land in a side panel beside the pane β€” the terminal never changes size β€” or move into a tab. WIDGETS & SHORTCUTS Put a host on your Home Screen β€” last-known frames, an honest SEEN stamp, SHELL and AGENT keys straight into a connection β€” or a fleet widget for every host at a glance. Shortcuts and Siri open a shell, show a remote file, or launch an agent in a chosen directory, fresh or inside an existing session. A multiplex:// URL scheme drives automations. MOSH BUILT IN With Pro, switch a host to mosh and the session survives sleep, roaming, and IP changes β€” a native Swift mosh client, no companion app. CONNECTION STATS A live latency chip on every host rail; Pro opens the full per-host board: round-trips, typing echo, mosh loss and roams, reconnects, data volume. Measured in-session; nothing leaves the device. A REAL TERMINAL xterm-256color emulation, multilingual system-keyboard input, touch and pointer clicks for mouse TUIs, hardware keyboards, live PTY resize, and a menu of everyday tmux (or herdr) commands. Hold CTRL for Key Commands: saved chords the software keyboard cannot press (Shift+Enter, a double Ctrl-C) and one-line text macros, synced everywhere. Pane-clamped selection on long press or double tap. System, Light, and Dark switch the whole chassis, each with its own terminal theme β€” ten built in; Pro adds an editor down to all 16 ANSI colors. The app speaks English, Traditional Chinese, and Japanese. OPEN SOURCE, PRIVATE BY DESIGN The complete app β€” terminal engine, mosh client, and all β€” is open source, Apache 2.0, at github.com/multiplex-term/Multiplex. Read the code that holds your keys, or build it yourself. Hosts, command setups, and secrets sync through iCloud Keychain, end-to-end encrypted. Nothing touches our servers β€” there are none. No account, no analytics, no tracking. MULTIPLEX PRO One purchase, no subscription: unlimited hosts, mosh, agent notifications, the Connection Stats board, the unmetered command strip, custom themes, and twelve Key Commands. Free includes two hosts, the complete terminal, five Key Commands, and 10 chip taps a day. WHAT YOU NEED A remote host reachable over SSH (password or ed25519/RSA key). The wall and persistent sessions need tmux 1.8+ or herdr 0.7.5+; plain SSH shells need neither. mosh needs mosh-server on the host.

Screenshots

SQQuantum4 screens
Multiplex4 screens

Verdict

The call

The clearest difference is in-app purchases: SQQuantum at none against Multiplex's 1. SQQuantum also leads on update cadence (every 2 days vs every 6 days). Multiplex's advantage is iOS requirement (17.0 vs 26.2). On price, ads and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Multiplex sells 1 one-off in-app purchase. SQQuantum asks for nothing beyond the download.

UpkeepUpdate frequency

SQQuantum ships an update every 2 days, Multiplex every 6 days. The most recent releases landed on September 26, 2026 and September 14, 2026 respectively.

Scorecard3 real differences Β· 3 level
SQQuantum versus Multiplex: the parameters behind the verdict, then further details
ParameterSQQuantumMultiplex
PriceFreeFree
Update frequencyEvery 2 days β€” betterEvery 6 days
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhone, iPadiPhone, iPad, Vision Pro β€” better
Requires iOS26.217.0 β€” better
Further details β€” not scored
Size3 MB18 MB
Age rating4+4+
DeveloperMenelaos MalaxianakisJhen Jie Hong

In-app purchases

None

SQQuantum

No in-app purchases

1 purchases

Multiplex

One-time1
  • Multiplex Pro$19.99

Questions

Is SQQuantum free?
SQQuantum is free to download, with no in-app purchases.
Is Multiplex free?
Multiplex is free to download, with in-app purchases available.
Do SQQuantum or Multiplex have ads?
Neither SQQuantum nor Multiplex shows ads.
Which is updated more often, SQQuantum or Multiplex?
SQQuantum ships an update every 2 days, and Multiplex every 6 days. Most recently, SQQuantum was updated on September 26, 2026 and Multiplex on September 14, 2026.

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