Unlock the Past. Enrich Your Present.
Learn history through beautifully crafted lessons and challenging quizzes. Earn badges, climb leaderboards, and master the ancient world — free, every day.
Download on the App StoreYour journey
Explore beautifully written modules covering the ancient world and beyond. Learn at your own pace.
Test your knowledge at the end of every level. You need 80% or higher to earn your badge and move on.
Complete all levels in a topic to unlock the Grand Trial — a 25-question ultimate challenge.
Crafted content
Every module in Cleo is carefully written to be engaging, accurate, and memorable. We cover ancient civilisations, pivotal moments, and extraordinary figures from across history.
Test yourself
Each level ends with a quiz designed to test genuine understanding, not just memory. You need 80% or higher to pass — and earn your badge.
Global community
Your quiz scores and badges feed into global leaderboards. See how your knowledge stacks up against history enthusiasts from every corner of the world.
Complete every level in a topic with 80% or higher and you'll unlock its Grand Trial — a gruelling 25-question gauntlet that separates the curious from the truly knowledgeable.
Each day you receive 5 gems to spend across modules, quizzes, and Grand Trials — one gem per activity. Run out? Watch a short ad to earn more.
Cleo is free to download. Every single day you get a generous ad-free allowance — no paywalls, no subscriptions required. Just open the app and start learning.
Available now on iOS. Download Cleo and begin exploring history through beautifully crafted lessons, challenging quizzes, and a global community of learners.