App

The Nothing X app is repeatedly described as one of the best parts of the experience, with feature access, customization, and settings that help compensate for default tuning.

The Smart Control Plus app is repeatedly called a standout, bundling EQ, ANC, connection management, firmware updates, and extras like sound zones and find features. A few reviewers mention occasional glitches, especially when the dongle is connected.

The Smart Control app is widely praised for depth and polish, offering fit tests, customization, updates, and sound tools. The main critique is that it can feel feature-dense or that certain controls (like EQ depth) could be more advanced.

The Sony companion app is repeatedly cited as a major value add, offering EQ, feature toggles, and adaptive behaviors; one review notes account requirements for full access.

The JBL Headphones app is viewed as central to the experience, enabling firmware updates, mode switching, and deeper personalization. Most find it well organized, though a minority report occasional crashes or flaky connections.

The Melomania app is typically described as clean and functional for firmware, battery, ANC and EQ; the SE adds DynamEQ, and most find it easy to navigate.

There is no traditional companion app; configuration lives inside iOS/iPadOS settings and feels deep and polished for Apple owners. On Android, feature access and management are reduced, making the experience feel clunkier.

The Smart Control app is widely viewed as feature-rich with EQ and zone-based behavior, but some reviewers dislike setup friction, pop-ups, or account requirements for certain features.

The Sony companion app is feature-rich (EQ, adaptive modes, firmware updates), but setup prompts and data permissions can feel heavy for privacy-sensitive users.

The Sony companion app is feature-rich (firmware, EQ, adaptive sound, 360 features) and often praised, but some find it busy/cluttered or occasionally buggy.

The Soundcore app is a major value add: it is usually described as straightforward, stable, and essential for unlocking features like EQ, control remapping, and firmware.

Fractal's Adjust Pro is commonly referenced as a browser-based configuration tool. Several reviewers like avoiding heavyweight desktop utilities, while some note Chromium-based browser requirements or prefer offline access options.

Sony’s Sound Connect app is central to the experience, offering seal tests, device priority, EQ, and many feature toggles. It enables deep customization, but some users want a cleaner, more straightforward layout.

The Technics Audio Connect app is feature-rich (ANC, EQ, multipoint, spatial settings), but some reviews call the interface clunky or menu-heavy.

The JLab app is repeatedly called useful rather than mandatory, adding firmware updates, EQ, safe-hearing limits, button remaps, and more granular noise-control settings (with a few UI quirks noted on certain phones).

The Melomania companion app is considered functional with key settings, though a few reviews mention UI quirks such as confusing store listings or limited customization depth.

Wireless-focused reviews describe a companion app that manages presets, EQ, button behavior, sidetone toggles, and power settings. Other reviews describe a no-software experience, implying feature depth may vary by model or connection path.

The companion app is typically seen as clean and easy to navigate, though not feature-rich compared with the very best ecosystems.

The Sony companion app is generally viewed as helpful for EQ, ambient controls, multipoint management, and feature toggles; a few reviewers find parts of the interface or specific tools confusing or limited.

The HeyMelody app (or OnePlus system settings) delivers broad control over modes, EQ, and features. Experiences range from polished and fast to occasionally glitchy, especially when the app fails to detect the buds reliably.

The Bose app is typically described as clean and easy, enabling modes, EQ, and updates; one review criticizes the onboarding privacy prompt and the app being required for full control.

The companion apps are useful for mode switching and tweaks, but reviewers disagree on convenience and feature completeness across mobile and PC.

The Bose app is generally seen as essential and functional for modes, device management, and settings, though some workflows (like mode creation) can feel limited or slightly confusing.

The Marshall app is generally well-liked for being clean and functional, giving access to firmware, EQ, ANC levels, control customization, and battery-care features.

Razer Synapse on PC and the Razer Audio mobile app provide useful control for EQ, mic settings, ANC, and wheel behavior. Reviews note the tools are powerful, though occasional quirks, connection-mode requirements, or finicky behavior can slow setup.

The companion app is generally considered clean and functional, offering key controls and some ecosystem integration. Multiple reviewers still call it simpler than Sony-style apps and note missing power-user features.

The companion app is feature-rich for personalization, EQ, control mapping, and updates, but some sources mention slow loading or occasional instability, and several note it is effectively required to get full value.

The Bose Music app is easy to navigate for modes, updates, and basic customization, but power users may find it simpler than competing apps.

The Galaxy Wearable app unlocks core features like EQ, noise modes, and Find My tools. Reviews repeatedly warn that iPhone support is limited and some features are Samsung-only.

SteelSeries GG and Sonar are praised for power and depth, especially for audio routing, EQ, and mic processing. At the same time, multiple reviewers complain about updater friction, UI clutter, or limitations on non-PC platforms.

The companion app is powerful but divisive: some praise the refreshed layout and feature depth, while others still find it crowded or unintuitive for everyday settings changes.

The Smart Control app is feature-rich (EQ, connection management, modes), but critiques include clutter, occasional usability quirks, and optional account-based features.

Logitech G Hub (PC) and the mobile app provide core tuning and routing controls; experiences are mostly positive, though some reviewers mention occasional software hiccups or limited mobile functionality.

The companion app is generally stable and straightforward for modes, ANC, immersive audio, and device management, but many reviewers describe it as basic compared with feature-rich competitors.

App support includes a PC-focused hub and a mobile companion, giving access to EQ, profiles, and certain feature toggles. Several reviewers mention that settings can overwrite between apps or feel barebones, but the core control options are there.

Swarm II provides firmware updates plus access to EQ, mic controls, spatial options, and game/chat features. Stability and feature parity vary by platform, and some users report connection or preset issues.

The Sonos app is needed for setup, updates, EQ, and home-theater features, and opinions are mixed. Some like the simplicity and redesign, while others report pairing hiccups, limited options, or updates that feel slower than they should.

On iOS, Studio Pro relies heavily on system integration for basic settings; on Android, the Beats app provides control tweaks, battery readouts, and firmware updates. Overall, the app experience is functional but not feature-rich.

The companion app enables key features (EQ, modes, LDAC, shortcuts), but experiences vary: some find it helpful and improved, while others report confusion across app versions, unreliable connections, or lag.

There is no standalone AirPods app in the traditional sense; most controls live in Apple’s Settings on iOS. This works well for Apple users but offers little for Android users beyond pairing.

No standalone app; controls live in iOS settings, which is seamless for Apple users but limited for others.

Multiple sources confirm there is no companion app for the IO-12.