“13.05 — What kind of 3 day free trial charge 13.05 right off the bat, deleted the app and says you have a subscription free trial to Cancel that so I won’t get charged. But they charged me already. I don’t know how Apple is allowing this…”
Independent automated assessment · 3 signal sources · 502 reviews scanned · analyzed 2026-10-04.
4.2 ★27,959 ratings
—Downloads
4+Age rating
56 MBApp size
Free · In-app purchasesIn-app purchases
About this app
Best equalizer and bass booster app for iPhone and iPad – Equalizer Fx lets you experience the magic of music with its powerful 7-band EQ and dynamic bass tuning functionalities.
Enhance the way you listen to songs by modifying sound effects using 15+ punchy amplifier presets. You can quickly create your own custom presets as well.
Key Features of Equalizer Fx: • Powerful bass-boosting effects • 7-band EQ with Dj transitions • Elegant music visualizers • Create custom equalizer presets • Play music in the background • Stream your favorite radio stations • Equalizer presets: Acoustic, Bass Booster, Bass Reducer, Flat, Classical, Hip Hop, Rock, Latin, Pop, etc. DRM Restrictions on Music Effects Please note that you cannot apply any equalizer, bass boost, or volume boost to DRM-protected music.…
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 4.8.3 of the app, analyzed 2026-10-04 . The app may have changed since.
The store currently lists version 4.8.3, updated 2025-12-19.
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
Says 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
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.
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.
Reported by users: Trial converts to a charge
The free trial demands a payment method up front and/or rolls into a paid subscription with no usable warning.
What we saw: Trial converts to a charge: raised by 6 distinct reviewers (1.2% of 502 reviews scanned)
Highlighted reviews
Representative public review excerpts shown as user reports, not Appworthy audit evidence.
“Very old app? Look at all the ONE stars!! — This app feels old. When you go to settings there is very little there you can change. There is a list but it’s mostly about payments. Nothing there about audio setups. The faq is all about how…”
“Closes upon opening — Useless when it closes as soon as I open it. Now I have to figure out how to cancel the free trial before it charges me.”
Assessment & version history
App changes and Appworthy events in one timeline.
Store listing updated to version 4.8.3.
What this app sells
Useful store-disclosed pricing, kept below the app listing.
Items shown10
Lowest$2.99
Highest$49.99
Equalizer VIP Weekly$7.99
Weekly Premium$4.99
Equalizer Monthly$2.99
Monthly Premium$4.99
Equalizer VIP Monthly$11.99
Show 5 more purchases
Equalizer VIP Yearly$49.99
Equalizer Yearly$9.99
Equalizer VIP$9.99
Equalizer VIP$2.99
Lifetime Membership$19.99