Real store listing · independent assessment pending.
3.6 ★18 ratings
—Downloads
4+Age rating
36 MBApp size
$4.99In-app purchases
About this app
This app is a speaker polarity tester. Find out if your speakers are wired correctly (in phase or out of phase). Test your surround speakers, stereo speakers, PA speakers, in fact any speaker with wiring terminals on the back.
This speaker polarity tester was designed by the same people who built the Audio Toolbox, and the polarity tester in that unit was known as the most accurate and reliable polarity tester available. Now that technology is available in your iPhone.
Use this app to test your home speakers, recording studio monitors, home theater systems, car audio systems, or as part of your professional contractor work. Speakers wired backwards are the most common error in sound system setup, cause big problems, and are easily corrected. This app will give you the answers, no matter how difficult the wiring may be to trace.…
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.
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
Not assessed
Fewer than 50 reviews scanned — too few to state a rate
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
Not assessed
This app's reviews have not been assessed yet
Five-star share of ratings
Under 65% 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.
No review themes cleared the reporting threshold.
Assessment & version history
App changes and Appworthy events in one timeline.
What this app sells
Useful store-disclosed pricing, kept below the app listing.
Business model$4.99
Prices and terms as disclosed by the store listing.