Serious warnings 2 confirmed warnings. Checked: 400 reviews, the Android app’s code, the store listing and the privacy label.
From our automated analysis, 30 Oct 2026. Every label links to its evidence in the full report below.
This analysis describes version 1.71.02 of the app (the version number recorded inside the package we inspected), analyzed 2026-10-30 .
The store currently lists version 1.71.02, updated 2026-10-23.
Store screenshots supplied by the developer.
QuizDuel takes your trivia knowledge to the next level! Challenge your brain and test your reflexes as you play games against friends and players from around the world! Come and join 100+ million players in QuizDuel!
Boost your trivia skills in our new Solo Mode! Progress through Solo Quests to beat the Boss and be your best!
Love playing games with other players? Challenge random players in the arena or challenge your friends in a classic game! Take part in quiz matches that jump start your smarts as you race to beat other players to the correct answers.
Hundreds of thousands of trivia questions across 20+ categories, means your brain will get a serious workout in the most addictive quiz & trivia game out there!…
From the developer’s store description.
For developers and the curious
The evidence, sources, measurements and versions behind every label above.
Findings that met the published evidence standard.
Bundles 16 distinct ad networks / mediation SDKs: Amazon Publisher Services, AppLovin MAX, BidMachine, Chartboost and 12 more
The package embeds several distinct advertising or mediation SDKs — a stack built for ad volume, not for a single house ad.
Package artefact
Appworthy
sha256:071efc3df5fec292eddacd46f96d726491a21cff11910e13c9a02d1d28a1d208Aggressive ad load: raised by 69 distinct reviewers (about 1 in 6 reviews we read)
Advertising volume or placement that interrupts normal use: ads between every action, unskippable or forced full-screen ads.
Specific evidence of a useful property, within the stated scope.
The developer's store data-safety disclosure states that data deletion can be requested; we have not seen a deletion control in the app's own text
The developer's data-safety disclosure on the store states that users can request deletion of their data, or the app's own text offers a way to delete the account. This restates what the developer declares; it is not a test of whether deletion works. Apple publishes no equivalent disclosure, so on an Apple-only listing only the app's own text can support it.
Open observations that have not cleared the evidence bar.
The app's own text says: "Continue"
This observation has not cleared the required evidence standard.
The app's own screens offer a way past sign-up — guest access, skipping, or browsing before registering — rather than gating the product behind an account. The store's privacy disclosure is checked alongside it: that disclosure is self-reported, so it corroborates this credit rather than establishing it.
Package artefact
sha256:071efc3df5fec292eddacd46f96d726491a21cff11910e13c9a02d1d28a1d208The app's own text says: "Open ad when you're back online."
This observation has not cleared the required evidence standard.
The app's own copy describes working without a connection — offline mode, downloading for offline use, or content saved for later. Shown because readers filter on it; it is a feature, not a fairness property, and never counts for or against an app.
Package artefact
sha256:071efc3df5fec292eddacd46f96d726491a21cff11910e13c9a02d1d28a1d208400 reviews read for this analysis. Each observation keeps the sample and store it was based on.
Unfortunately, Quizduell has decided to show so many ads for stupid games for up to a whole minute. You have to skip & close those ads three times in total. Also, without clicking on the ads in any way, they will open your app store which…
Full of ads, although I used to have a Premium version a few years ago. I've been trying to play the new version but so many things are annoying. Some categories show up rarely and others come all the time. Why? My favourite category…
The game itself has potential but it's so full of ads that it's impossible to have fun. Seriously, you get so many ads that cannot be skipped for a couple of seconds or where the skip button is super small and half hidden in some corner…
A sampled review illustrates one person’s experience. It does not establish a finding on its own.
“Not assessed” means we could not measure it. It is never a zero and never a pass.
Android package 1.71.02, scanned 25 Oct 2026. These describe that package, not the current store version.
Supporting measurements: not a complete list of possible harms or positives. Measurement vocabulary 1.4 · how these are measured
This analysis describes version 1.71.02 of the app (the version number recorded inside the package we inspected), analyzed 2026-10-30 .
The store currently lists version 1.71.02, updated 2026-10-23.
Each store’s release notes, as the developer wrote them. They are the developer’s words, not ours.
This release is full of gourmet trivia with all the fixings. We improved the QD recipe and spiced up the quiz engine so it's in tip-top shape. Loyal quizzers we love you! New to QuizDuel? We love you too! With fresh fun ways to test your knowledge against millions of players, we know you'll love this release too. Happy quizzing!
No release notes were provided for this version.
quizduel-trivia-and-quiz-gameAssessed 2026-10-30 from 400 user reviews, the app's package, the store listing and its privacy label.
What the stores publish. Store ratings are the stores’ numbers, not Appworthy’s, and are never averaged across stores.
From the store listing. Billing terms are read from each purchase’s name — the stores don’t publish them — so treat them as a strong hint, not a disclosure.
These are really on sale; we just can’t tell from the name whether they recur.
This assessment is produced automatically. Six independent signals are read — user reviews, SDKs in the app package, the app's own on-screen text, the app manifest, the store listing and the store privacy disclosure — and each candidate finding is filed under the sources that support it.
No charge stands on one kind of evidence — with one published exception. A finding is either a measured fact that anyone can reproduce (an ad SDK is in the package; every recurring plan the store lists is named as weekly, the term read from the purchase names, with a list cut off at the store’s 10-item maximum not assessed; the privacy label omits a tracker we can see), or it is an interpretation — and an interpretation needs independent sources to agree before it reaches the catch list. The exception is a harm only users can see: a charge may publish from reviews alone, as “Reported by N users”, once enough reviewers raise it to clear that charge’s own published bar. That agreement rule is what replaced the human reviewer, not a model’s confidence.
There is no overall score, on purpose. A 0–99 number was published here until 2026-09-15. It was withdrawn because it discriminated too weakly to be the instrument — 44.7% of every pair of apps tied — and because a single number is a verdict where a count is an observation. What publishes instead is a row of measurements, each of which says what was counted and, where we could not look, says that instead.
Findings under One source only are real reports we do not stand behind as findings. They are shown because withholding them entirely would hide a genuine complaint, and labelled because publishing them as charges would be an accusation off a single source.
Write to [email protected], or use the form. Name the finding, the app version and the evidence that needs correcting. Factual corrections are free and never depend on buying anything.