Submorse

Submorse is a single-player app for learning and practicing Morse code. You can start with a tutorial, choose material to practice, or test your speed in time trials that rank results on a global leaderboard.

Learn and practice

The beginner-focused tutorial introduces the codes that are easiest to remember. Completing it is intended to give you a degree of mastery, with practice strengthening the translations in your long-term memory. In Practice Mode, enter characters, words or sentences to learn or review; characters can appear in random order to help reinforce translations you find difficult. You can also practice words, sentences or phrases you already know or want to learn.

Time trials

Time trials focus on speed and offer no help if you get stuck. Your shortest times appear on a global leaderboard inside the submarine.

Explore the submarine

The submarine contains hidden features and interactions, along with details to discover.