WorldSketch

Learn every country, flag & capital with offline drills — nothing leaves your device.

There are 195 UN member states, and the number people expect is almost always wrong because the hard cases are genuinely contested — observer states, territories, and countries recognised by some governments and not others.

Flags and capitals suit drilling well because they are arbitrary pairings, which is exactly what retrieval practice is best at. A few of them are traps worth knowing: several countries have more than one capital by function, and a handful of flags are near-identical pairs — Chad and Romania, Indonesia and Monaco — which is precisely why testing beats passive review.