“Impossible to cancel — I used this for a short time and it served its purpose. Though didn’t work quite as I needed. So I canceled and 4 years later they are still charging me. Buyer beware.”
Independent automated assessment · 3 signal sources · 507 reviews scanned · analyzed 2026-10-05.
4.4 ★48,721 ratings
—Downloads
4+Age rating
72 MBApp size
FreeIn-app purchases
About this app
#1 best-selling iPad app in US, Japan, UK, Germany, and 17 other countries!
Duet turns your iPad or iPhone into the most advanced extra display for your Mac & PC. Developed by a team of ex-Apple engineers, Duet offers unparalleled performance and display quality - all with zero lag.
— DO MORE — Be twice as productive by multitasking with two screens. And for those that travel, have a portable way to stay productive.
— INCREDIBLY SIMPLE — To get started, plug your iPad into your desktop using your charging cable. The free Duet desktop app will automatically detect your device, and transform it into a high performance touchscreen display.
There’s no need to worry about unreliable Wi-Fi, laggy performance, pixelated screens or managing network passwords.
— TOUCHSCREEN — Interact with Mac & PC like never before, with touch & gestures, including two-finger scrolling, pan and zoom.…
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 3.2.0 of the app, analyzed 2026-10-05 . The app may have changed since.
The store currently lists version 3.2.0, updated 2026-09-05.
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
3 or more 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
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 3
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: 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 12 distinct reviewers (2.4% of 507 reviews scanned)
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 8 distinct reviewers (1.6% of 507 reviews scanned)
Reported by users: Paywall blocks the basics
The core of the app — not extras — sits behind payment, or previously-free function moved behind a paywall.
What we saw: Paywall blocks the basics: raised by 7 distinct reviewers (1.4% of 507 reviews scanned)
Highlighted reviews
Representative public review excerpts shown as user reports, not Appworthy audit evidence.
“Scam — No way to cancel your 7 day free trial before it is up and charges you for a year. App also just doesn’t work.”
“Company is badly managed — I was not going to leave a review, but wow. So I downloaded this app to see if I can make it to work with just a monitor. I didn’t think so, but wanted to try anyway. Once you confirm your email, takes you to a…”
Assessment & version history
App changes and Appworthy events in one timeline.
Store listing updated to version 3.2.0.
What this app sells
Useful store-disclosed pricing, kept below the app listing.
Business modelFree
Prices and terms as disclosed by the store listing.