“Very very good equalizer. There are a lot of ads though and some of the ads are very sexually suggestive, other then the ads the app is overall very good”
Independent automated assessment · 6 signal sources · 1,103 reviews scanned · analyzed 2026-10-04.
Flat Equalizer - Bass Booster
Beat Blend LabsBass Booster For Headphones: Your Ultimate Audio Control & Sound Amplifier Ap…
4.7 ★628,780 ratings
10M+Downloads
4+Age rating
—App size
Free · In-app purchasesIn-app purchases
About this app
Bass Booster For Headphones: Your Ultimate Audio Control & Sound Amplifier App!Experience the world of clean and loud music with the Equalizer Sound Booster for Android Phone, the all-in-one Sound Amplifier App that elevates your audio experience. Turn up the sound and feel the power - try volume booster free today! Level up your audio with this speaker booster free app. This Bass Booster For Headphones is your go-to for achieving optimal sound quality. Say hello to extraordinary audio with Headphone Volume Booster: Sound Amplifier App!…
Preview
Real screenshots from the store listing.
Independent evidence report
The evidence behind this assessment
This is where the page changes from an app-store listing into an evidence report: findings, important reviews, pricing and a dated history.
Which version this describes
When we ran this analysis, and what the store lists now.
This analysis describes version 6.3.5.6 of the app (the version number recorded inside the package we inspected), analyzed 2026-10-04 . The app may have changed since.
The store currently lists version 6.3.5.6, updated 2026-07-07.
What we measured
Each line is a measurement published as a measurement, never a verdict.
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 at least 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
1 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
From the package we downloaded and read — version 6.3.5.6, scanned 2026-09-12.
Permissions Android classifies as dangerous
1–2 requested
Counted against the eighteen permissions listed in collect-package.ts. A dangerous permission is one Android asks the user to grant; requesting one is not itself a finding.
Analytics or tracking SDKs in the scanned package
1–2 found
Advertising SDKs in the scanned package
3–9 found
Counted as distinct SDKs in the package we scanned. One mediation bundle can contribute several, so this is not a count of advertisers.
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.
The catch list 1
Charges we publish at a strength we stand behind: measured from an artefact, agreed by independent sources, or reported by enough users to clear that charge's own published bar.
Multiple ad networks bundled
The package embeds several distinct advertising or mediation SDKs — a stack built for ad volume, not for a single house ad.
What we saw: Bundles 8 distinct ad networks / mediation SDKs: Amazon Publisher Services, AppLovin MAX, Fyber / Digital Turbine Exchange, Google Mobile Ads (AdMob / Ad Manager) and 4 more
Positive evidence 1
Things this app does right, published at the same strengths as the catch list.
Developer says data deletion can be requested
The developer's data-safety disclosure on the store states that users can request deletion of their data, or the app's own text offers a way to delete the account. This restates what the developer declares; it is not a test of whether deletion works. Apple publishes no equivalent disclosure, so on an Apple-only listing only the app's own text can support it.
What we saw: The developer's store data-safety disclosure states that data deletion can be requested; we have not seen a deletion control in the app's own text
One source only — shown, not confirmed 2
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.
Reported by users: Aggressive ad load
Advertising volume or placement that interrupts normal use: ads between every action, unskippable or forced full-screen ads.
What we saw: Aggressive ad load: raised by 17 distinct reviewers (1.5% of 1103 reviews scanned)
In the app's own text: Countdown-timer purchase pressure
The app's own purchase copy attaches a deadline to buying — a countdown, 'offer ends in', 'limited time' — or ships a countdown view on a purchase-screen layout.
What we saw: Deadline pressure in the app's own copy: "Limited time offer"
Highlighted reviews
Representative public review excerpts shown as user reports, not Appworthy audit evidence.
“This app worked well during the 3 minutes I used it, but it spammed me with way too many ads while I was switching back and forth between this and other apps to test my settings.”
“too many ads. doesn't even work”
Assessment & version history
App changes and Appworthy events in one timeline.
Store listing updated to version 6.3.5.6.
What this app sells
Useful store-disclosed pricing, kept below the app listing.
Items shown0
Lowest—
Highest—
Google Play does not publish per-purchase prices.