Real store listing. Store data comes from public listings; the assessment type and evidence coverage are labeled on this page.
DiscoverBrowse CategoriesHow it worksMethodologyFor developers
Independent automated assessment · 3 signal sources · 399 reviews scanned · analyzed 2026-10-04.
4.8 ★15,421 ratings
—Downloads
12+Age rating
71 MBApp size
FreeIn-app purchases

About this app

Things have moved on. There’s no longer just a dial to twist when your favourite song comes on, then guard to make sure no one else touches it. With the app, you can crank up the volume from the kitchen and there’s nothing anyone can do about it.

It’s using the powers of technology for good, and ultimately with you in control, better playlists for all. And if apps aren’t your thing, you can still use our products without it.

Using the app is simple. Just connect your devices, adjust the volume, and get on with your life. You can fiddle with more detailed adjustments if you’re that way inclined, like equalisers and noise control for headphones – everything is there to help create your perfect fit.…

Preview

Real screenshots from the store listing.

7 screenshots
Marshall Bluetooth screenshot 1
Marshall Bluetooth screenshot 2
Marshall Bluetooth screenshot 3
Marshall Bluetooth screenshot 4
Marshall Bluetooth screenshot 5
Marshall Bluetooth screenshot 6
Marshall Bluetooth screenshot 7

Independent evidence report

Evidence and review signals

This is where the page changes from an app-store listing into an evidence report: findings, important reviews, pricing and a dated history.

Automated analysis in progress

Which version this describes

When we ran this analysis, and what the store lists now.

This analysis describes version 3.9.1 of the app, analyzed 2026-10-04 . The app may have changed since.

The store currently lists version 3.9.1, updated 2026-09-29.

What we measured

Each line is a measurement published as a measurement, never a verdict.

How these are measured

Each line is a measurement, published as a measurement. Where we have not looked, the line says so rather than reading as a zero.

Developer replies to reviews
Replies to fewer than 1 review in 20
Price in the store description
States no price and billing period
Cancelling, in the store description
Does not say how to cancel
Themes reported by reviewers
No theme reported
Counted from the reviews we have read for this app. "No theme reported" means no theme reached our reporting threshold — it is not a finding that nothing is wrong with this app, and we do not say it is.
Five-star share of ratings
80–89% five-star
Arithmetic on the stores' own published rating counts. It says nothing about why the ratings fall where they do.

In the package we scanned

No package has been scanned for this app, so nothing is published about what it ships. That is an absence of evidence about the app, not a finding about it.

Graded bands · predicate set 1.4 · how these are measured

What the analysis found

App-specific findings, grouped by what each one rests on. How they are graded lives on its own page.

Methodology

One source only — shown, not confirmed 1

A single kind of evidence. We publish these because withholding them would be the bigger distortion, and we do not treat any of them as a finding we stand behind.

From the store listing: Usable without an account
One source onlyShown, not confirmed — the only source is the store privacy disclosure.view evidence
The app's own screens offer a way past sign-up — guest access, skipping, or browsing before registering — rather than gating the product behind an account. The store's privacy disclosure is checked alongside it: that disclosure is self-reported, so it corroborates this credit rather than establishing it.
What we saw: The store privacy disclosure (3 entries) links no contact details or identifiers to the user — consistent with an app that does not require an account. Self-reported by the developer.

Assessment & version history

App changes and Appworthy events in one timeline.

Store listing updated to version 3.9.1.

What this app sells

Useful store-disclosed pricing, kept below the app listing.

Business modelFree

Prices and terms as disclosed by the store listing.