Illo? Mind-blowing questions

RLucky Dev

About this app

Is the red you see at a traffic light exactly the same red I see? What language does someone born deaf think in? Who was the first person to learn to read?

Illo? is a collection of questions that leave you with a "wait, wait, wait… how can that be?" face. The kind that make you stare at the ceiling wondering if you live in a simulation.

🤯 QUESTIONS THAT BLOW YOUR MIND
Your brain, the origin of things, language, your body, time and the universe, reality and animals. A new question every day to start your day properly confused.

💡 WHAT WE KNOW (AND WHAT WE DON'T)
Read the question on its own and, whenever you like, find out what science says. Some have an answer, and it blows your mind again. Others nobody knows yet, and we tell you how far we've got.

🫠 DID IT HIT YOU?
Rate every question from "meh, didn't hit" to "I live in a simulation" and see how many people's minds it blew. The ones that hit hardest climb the ranking.

📲 SHARE THEM
Send any question as an image to your group chats, your stories or that friend who overthinks everything.

🌍 SUGGEST YOUR OWN
Know a brain-breaker? Send it. If it makes the cut, we add what science knows about it and it shows up in everyone's app.

ALSO
• Question of the day
• Shake your phone for a random question
• Search by keyword or topic
• Save your favorites
• Dark mode for late-night talks
• In English and Spanish

No accounts, no ads, no trackers. Free.