Knock Knock Simulator
Funny jokes for kids & family
Only for iPhone
$1.99 · Designed for iPhone. Not verified for macOS.
iPhone
Someone's knocking. Ask who's there, then open the door to meet the punchline. 38 kid-safe knock-knock jokes told by painted cartoon visitors, with a groan meter.
Knock knock. Who's there? Lettuce. Lettuce who? Open the door and find out: a lettuce in earmuffs is standing on your porch, and the punchline lands with a rimshot and a burst of confetti.
Knock Knock Simulator is a joke book your kid can play with. Every joke is a proper pun, every visitor is a painted cartoon character, and the punchline only comes when you open the door and see who it is.
HOW IT WORKS
Tap the big red button and someone knocks. Tap "Who's there?", hear their name through the door, tap "____ who?", then open the door. A yeti who is freezing. An owl in round glasses. BA DUM TISH. Then rate it on the groan meter, from Meh to GROANER!
38 JOKES THAT LAND
- Food, animals, names, spooky, holidays, school, silly and the very worst groaners
- Every one kid-safe, every one a real pun on the reply, told by a visitor who suits it
- A shuffled bag, so you hear every joke before any repeats
- Joke of the Day with a streak for coming back
- Four stars or more saves a joke to your favourites, ready to tell again
SAY IT OUT LOUD
Turn on voice mode and the door listens for "Who's there?" and "... who?" Your kid says it, the visitor answers. Recognition happens on the phone: nothing is recorded, nothing is sent anywhere, and voice mode stays off until a grown-up turns it on. Tapping works just as well.
ON IPHONE DUO
The hinge is the door. Shut the phone and the cover screen is the inside of your front door: knock on it and whoever is outside knocks back (try shave-and-a-haircut), or peek through the peephole to see who is waiting. Open the phone and the punchline is on the porch. On every other iPhone the screen is the door: swipe it open on its hinges and swipe it shut.
MORE AT THE DOOR
- Party mode: the phone shows you what to say, a friend answers, then you open the door to show them who it was
- My Jokes: write your own who and punchline, pick the visitor, share it as a picture (behind a grown-up question)
- Six painted front doors, and a porch that changes with the month, after dark, and for the holidays
- Kids mode for the littlest: simple jokes and friendly visitors only
- Read-aloud voices built in, and adjustable text size
FOR GROWN-UPS
No ads, no in-app purchases, no accounts, no tracking, no internet needed. Works in the car, on the plane and in the waiting room. Sharing and voice sit behind a grown-up question.
One price, every joke in the box. Just corny jokes and a door.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
A clearer App Store page and small under-the-hood improvements.
The developer, Justin McCahill, 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
- Justin McCahill
- Size
- 139.5 MB
- Category
- Entertainment
- 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.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Justin McCahill
