“Not as advertised — This app is not what is advertised.”
Independent automated assessment · 3 signal sources · 508 reviews scanned · analyzed 2026-10-04.
Volume Booster Bass Booster
Muhammet Yalcın Ozdemir Halil Ibrahim Karahan Mustafa Ayten Kupertino Bilisim Yazılım K.SSpeaker Sound Booster
4.5 ★25,471 ratings
—Downloads
17+Age rating
177 MBApp size
Free · In-app purchasesIn-app purchases
About this app
Is your phone volume just not cutting it? Transform your listening experience with Volume Booster, the ultimate sound booster designed to unleash your device's true audio potential! Say goodbye to muffled sounds and low-quality output, and get ready for a truly immersive sound like never before.
Whether you're battling quiet speakers, dealing with poor audio quality, or simply craving more power from your tunes, Volume Booster is your go-to solution. This powerful volume amplifier lets you dramatically increase your phone’s volume up to an astonishing 1000%, ensuring every beat, melody, and vocal is crystal clear and vibrant.
Unleash Superior Sound: Don't settle for weak audio. Our advanced technology works as a robust speaker booster and headphone volume booster, delivering an incredible boost to all your audio playback.…
Preview
Real screenshots from the store listing.
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.
Which version this describes
When we ran this analysis, and what the store lists now.
This analysis describes version 2.3.2 of the app, analyzed 2026-10-04 . The app may have changed since.
The store currently lists version 2.3.2, updated 2026-03-10.
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 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
2 themes 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.
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: Reports that the ads misrepresent the app
Reviewers repeatedly report that the app is not what its advertising showed. We never see the ad creative itself, so nothing we collect can corroborate or refute this — it is published as an attributed user report: what reviewers say, and how many of them said it.
What we saw: Misleading advertising: raised by 10 distinct reviewers (2.0% of 508 reviews scanned)
Reported by users: Hard to cancel
Cancelling the subscription is blocked, hidden, multi-step, or simply does not take effect.
What we saw: Hard to cancel: raised by 8 distinct reviewers (1.6% of 508 reviews scanned)
Highlighted reviews
Representative public review excerpts shown as user reports, not Appworthy audit evidence.
“This app should be erased immediately! — This app falsely advertises that its service is free, but that claim is a lie! Don’t waste your time downloading it.”
“False claims — Waste of time looking for these the all include purchase meaning fake advertisement”
Assessment & version history
App changes and Appworthy events in one timeline.
Store listing updated to version 2.3.2.
What this app sells
Useful store-disclosed pricing, kept below the app listing.
Items shown9
Lowest$3.99
Highest$49.99
Weekly Premium$6.99
Monthly Premium$9.99
Yearly Premium$34.99
Yearly Premium$39.99
Lifetime Access$34.99
Show 4 more purchases
Volume Booster$3.99
Speaker Booster$49.99
Bass Booster$9.99
Secret Discount Pro$17.49