Semaphore Trainer

Learn to read semaphore.

A signaller spells out a hidden word with two flags. You type what you read. Every card you get right earns XP, builds a streak and pushes your level along — and the trainer remembers which letters keep catching you out.

Levels and badges

Cards earn XP, runs of correct answers multiply it, and two dozen badges are waiting to be won.

Your weak letters

Every attempt is scored letter by letter, and the picker leans toward the ones you keep missing.

A streak to keep

Hit a small daily goal and the flame stays lit. Miss a day and it goes out.