Every nation, by heart.
You've had the thought — a flag goes by at the World Cup, or in the news, and you catch yourself: I should really know that one. This is where you learn them, once and for all. You'll meet them a few at a time, and each comes back for review right before you'd forget it, until all 196 banners are in your brain forever.
Learn introduces new flags — multiple choice first, then leveling up to fill-in-the-blank. Test Out lets you demonstrate which ones you already know.
Complete learning sessions to unlock mastery reviews.
Your flag-learning progress stays on this device and nowhere else — no sign-up, no tracking, nothing in the cloud. Sharing the computer, like in a classroom? Anyone can reset and start clean in a tap.
New flags arrive in small sets. Each starts as multiple choice, then you type it from memory. Get it right enough times and it graduates out of the learning pile.
Graduated flags return on a widening schedule — a day, then days, then weeks. Each correct answer pushes the next review further out. That growing gap is what builds permanent recall.
Already know some? Type them correctly and they jump straight to mastered. You only ever spend time on what you haven't locked in yet.
Two ideas from learning science power this system.
Mastery learning: you don't advance until you've actually got it — no moving on with gaps left behind.
Spaced repetition: flags come back for review right as you're about to forget them — the scientifically proven sweet spot for making them stick for good.
Track what you know, target what you don't, time every review. That's the whole method — and it works on anyone willing to show up. Everything stays on your device. No account, no email — nothing to lose but the gaps.
Know every flag on Earth. It's a small, finishable proof of a bigger idea: the things people swear they "could never learn" usually weren't beyond them at all — they just never had a method that works the way memory actually does.
Knowing the world's flags makes you feel a little more at home on the planet. Actually speaking one of its languages is the bigger leap — and Spanish is the language most people start with, though few ever truly master it. We built VerbMaster on the very system behind these flags, aimed right at the wall that stops most learners cold: verb conjugation.
You know some Spanish — you just can't get the verbs right when it counts. VerbMaster teaches the logic of each tense, then drills your weak forms until they're automatic.
When the verbs come automatically, you stop pausing mid-sentence to build them — and what's left is the quiet confidence of finally speaking Spanish like you mean it.
See VerbMaster