Independent automated assessment · 3 signal sources · 500 reviews scanned · analyzed 2026-10-04.
4.3 ★18,321 ratings
—Downloads
4+Age rating
46 MBApp size
Free · In-app purchasesIn-app purchases
About this app
Bass Booster will amplify your bass at a maximum and provide you with a better sound quality wherever you are! Play your music from your iTunes library and adjust the sound to your headset or speakers just the way you want it! Click on the “speakers” icon to adjust the bass level. You immediately get a clearer and stronger bass sound.
You can customise your music listening experience even more thanks to two additional sound effects (in option): • a flanger to add colouring filters to your sound. • a pitch effect to play with your music and distort it.
Click on the icon, control and enjoy! In order to have an optimized music listening experience, use headphones or external speakers.
Tester reviews: - “I was skeptical at first, but when I hit on the speakers, I really heard the difference.…
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 2.09.02 of the app, analyzed 2026-10-04 . The app may have changed since.
The store currently lists version 2.09.02, updated 2026-07-22.
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
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
65–79% 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.
Context 1
Measured and published because a reader would want to know — deliberately not a charge. The measurement alone does not show a harm.
Cheapest and priciest options are far apart
The disclosed in-app purchases span an unusually wide price range. Published as context: the cheapest and priciest items may be different kinds of product entirely, so the spread alone deducts nothing.
What we saw: In-app purchases run from USD 0.99 to USD 75.99 — a 77x spread across 10 items
Assessment & version history
App changes and Appworthy events in one timeline.
What this app sells
Useful store-disclosed pricing, kept below the app listing.
Items shown10
Lowest$0.99
Highest$75.99
Weekly Premium Pass$7.99
Weekly Premium Pass$8.99
Weekly Premium Pass$6.99
Weekly Premium Pass$4.49
Monthly Premium Pass$18.99
Show 5 more purchases
Annual Premium Pass$59.99
Annually Premium Pass$75.99
Bass Booster Premium Pass$7.49
Full Pack$0.99
Full Pack$1.99