Duo Know
The quiz show that talks back
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Duo Know is a quiz show for your pocket – with a studio, an audience, a buzzer and a host who cannot keep quiet. Gary Gala reads every question out loud, comments on your answers and likes to tease you a little. All you have to do is be right.
ONE SHOW, FIFTEEN ROUNDS
A show takes a few minutes and shuffles the round types every time:
• Classic questions with four answers – the faster, the more points
• Ballpark: who gets closer?
• Buzz First, Think Later: whoever buzzes first has to answer
• Buzz Rush: terms fly by – buzz only for the ones that fit
• This or That: left or right, and quickly
• Bingo: buzz while the first letter of the answer is lit
AND THEN THE FINALE
Eight finale games can turn the whole show around: All In, Risk Ladder, The Studio Wheel, Bit by Bit, Time Bomb, Timeline, Fact or Fib and The Gremlin. If you are ahead, do not celebrate too early.
LIFELINES
Four of them, each once per show: pass a question on, 50:50, Second Chance and Hint. Pass a question on and you collect if the other side gets it wrong.
AGAINST THE ROBOT OR AGAINST PEOPLE
• Solo against Robo-Randy, the studio robot with a surprising amount of confidence
• Online with two to four players: private with an invitation link, or public against whoever shows up
• Live, everyone at once – or turn-based, everyone whenever they have time
• Ranking, stats, and leaderboards and achievements in Game Center
• Notifications and a Live Activity tell you when it is your turn
A STUDIO IN 3D
The show plays in a real studio with lights, a camera and confetti. Pick your character – it stands at the podium, thinks, cheers and sulks along with you.
TWO EDITIONS
The American show with Gary Gala and Robo-Randy, the German one with Eddie Elstar and Robo-Rainer – each with its own questions and its own voice. Switch the language in the app.
MADE FOR IPHONE DUO
Unfolded, iPhone Duo becomes a quiz desk: the stage on top, the buttons below. For Ballpark questions you can estimate with the hinge.
GOOD TO KNOW
• No account, no sign-in, no ads
• New questions keep coming from the server; without a connection the app plays a show it carries with it
• Duo Know is free. A one-time purchase raises the number of online matches you can run at the same time from five to ten of each kind
• A question is wrong, unclear or outdated? Tap "Report Question" in the game
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
New: Game Center leaderboards and achievements – high score, weekly high score, wins and 17 achievements to unlock.
Plus “More Slots”: a one-time purchase lets you run up to ten public and ten private online matches at once.
The developer, Marcel Wlotzka, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Marcel Wlotzka
- Size
- 104 MB
- Category
- Trivia
- Compatibility
Requires iOS 27.0 or later.
- iPhone
Requires iOS 27.0 or later. - Mac
Requires macOS 27.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 27.0 or later.
- iPhone
- Languages
- English and German
- Age Rating
9+
- 9+
- Infrequent
Profanity or Crude Humor
Contests
- In-App Purchases
Yes
- 10 Matches at Once $1.99
- Copyright
- © 2026 Marcel Wlotzka
