The Ultimate Buzzer vs The Urinal Problem

Sometimes a moment just needs a buzzer. The Ultimate Buzzer puts a big red button in your pocket, along with more than 75 sound effects for game nights, classrooms, parties, pranks and the occasional perfectly timed rimshot. Tap a sound and it plays right away. Tap a few and they play together. PICK HOW IT WORKS • Multi Sound: a grid of sounds you can tap as fast as you like, even several at once. • Big Button: pick a sound and it fills the screen as one giant button. Made for trivia, quizzes and anyone who likes to slam things. • Dual Big Button: two giant buttons side by side on iPad, or on iPhone Duo when it's open, for head-to-head rounds. GAME SHOW NIGHT Turn trivia night into a real game show for up to 8 players. Everyone opens the app on their own iPhone or iPad and buzzes in, and the screen tells them when to go. The host sees who was first, down to a fraction of a second, marks the answer right or wrong and keeps score, and can buzz in too. When the game ends, everyone sees the final standings with confetti, plus a results card to share or save to Photos. Players connect to the host over your local network, so nobody needs an account. Joining a game is free. Hosting comes with Pro. ON YOUR TV The Ultimate Buzzer is on Apple TV too. Host a game show with the scoreboard filling the screen while everyone buzzes in from their phones, and play sounds through your TV's speakers. Hosting on Apple TV comes with Pro, and Pro bought on iPhone or iPad works there too. No Apple TV? Host on iPhone or iPad and turn on AirPlay Screen Mirroring to put the scoreboard on the TV. KIDS MODE Big, bouncy buttons with animals, trains and other favorites, plus stars and trophies to earn. Any ads in Kids Mode are G-rated, and a grown-up has to solve a math problem to leave. You can even set the app to open straight into Kids Mode. A SOUND FOR EVERYTHING Buzzer, applause, drum roll, rimshot, wah-wah, epic fail, siren, alarm clock, countdown, crickets, cuckoo clock, rooster, cow, UFO and plenty more. They're sorted into Alarms, Animals, Vehicles, Funny, Action, Effects, Around the House and Nature, and you can search or keep your favorites at the top. THE LITTLE EXTRAS • SharePlay: on a FaceTime call, tap a sound and everyone hears it. • Siri, Shortcuts and Control Center: play a sound without opening the app. • A flashlight button for when the lights go out. • Pick any accent color and the whole app follows. GO PRO Pro is a one-time purchase, not a subscription. It removes ads on all your devices and adds: • 10 more sounds • Recording your own sounds, up to 10 seconds each, plus importing audio files and sharing your recordings • Hosting game shows • Every Kids Mode theme: Ocean, Space, Jungle and Candy Not sure yet? Watch a short ad to try a Pro sound free for 24 hours, or to record a sound of your own. Choose Just Me, or Family to share Pro with up to 5 family members through Family Sharing. Already have The Ultimate Buzzer Pro app? Open it once and this app unlocks too, through iCloud. All sounds are in the public domain.

The unwritten rule of the men's room, checked against the numbers. Pick the urinal that is furthest from everyone else. Nobody taught it to you, yet everybody follows it. So what actually happens when nine people walk into a row of five urinals? WHAT YOU THINK YOU KNOW, MEASURED Call a spot comfortable when the nearest occupied urinal is at least two away. The ceiling for n urinals is then ceil(n/2) people — three out of five, a 60% occupancy rate. The fourth arrival always ends up next to somebody. THE FIRST PERSON DECIDES EVERYTHING If the first arrival takes an odd-numbered urinal (1, 3 or 5), three people can stay comfortable. If they take an even one (2 or 4), the ceiling drops to two — before anyone else has even walked in. One opening move fixes the throughput for everyone who follows. The rule of thumb: take an odd-numbered urinal first. WHAT YOU CAN DO - Simulate 2 to 12 urinals and 1 to 30 people - Watch the whole thing play out in pictograms at 1x / 2x / 4x, with a scrub bar - See comfort rate, peak comfortable count and the theoretical maximum - Read the timeline as a Gantt chart; cramped stretches are hatched - See why each person chose their spot — far-end seekers, wall huggers, germaphobes and people who ignore the rule entirely - Export the result as a vertical card image and share it - Every run is fully reproducible from its seed, and kept in your history - A short explainer page covers the theory NOTES - Everyone is drawn as a pictogram, the way restroom signage does it - Completely free. No ads, no in-app purchases - No network access and no permissions. Everything runs on your device - English and Japanese