A bicycle in today’s world has become so familiar that it’s easy to be invisible.
You approach a pedestrian or another cyclist — and it’s like you don’t exist: they don’t see you, don’t hear you, won’t give way. What do you do? Shout “excuse me”? Ring a small bell? Sounds too polite.

Or you can — WoopWoop!

WoopWoop is an app-button, a signal for bikes and scooters.
You press it — and your phone emits a sharp, noticeable, playful or menacing sound. People immediately turn their heads. Some laugh, some step aside — but most importantly — you’re no longer ignored. It’s both fun and useful — the perfect bike horn that’s always been missing.

A GIFT nobody has yet

WoopWoop is exactly what’s missing for those cyclist friends who ride in helmets and cycling gear every Saturday. Bike locks, lights, bottles — they have these. But a “woop” tool? None.

People buy WoopWoop once — for themselves, and again for a friend.
Honestly: whoever you give it to — they open it, press the button — and boom, instant delight!

CHEAPER THAN A CUP OF COFFEE

No subscriptions. No hidden IAPs. Everything simple, like the old days: buy once — the app is yours forever, with all future updates included.

HOW IT WORKS
• One big button triggers a loud warning sound — the perfect alert for pedestrians.
• Didn’t hear it? Don’t worry. A smaller but stronger button slides out. Press and hold.
• You have three modes to switch in real time. For each, you can choose your main sound.
• Modes are marked as bike, scooter, and runner — but that’s just symbolic. Switch as the situation demands.
• You have 50 sounds to choose from, for each mode and for the smaller button.
• Custom sounds? Coming in the next version.

And — here’s a secret — you don’t even need a bicycle for WoopWoop. Sometimes a button and a bit of attitude are all it takes to make your day more fun.