Learn code using the Koch method with one-letter drills and mastery checks. Practice at full speed, track progress, and test knowledge. Customize settings for different learning goals. Share achievements and results.
by Michael Judge★ 4.5114 ratingsEducation$4.99Data updated 2026-09-06
Send encrypted messages using historical ciphers like A1Z26, Caesar Shift, and Vigenere. Encrypt text with customizable settings. Share coded messages via text or email. Decode messages using the same methods. View details and instructions.
Learn and decode with AI-powered audio recognition that translates sounds into text. Practice through games like sound recognition and typing races. Access a detailed table for reference. Translate text to and vice versa.
Record code messages by tapping the key. Send recordings via the broadcast icon to friends. View realistic images and learn code through integrated lessons. No translation or interpretation features are included.
Learn through a -based that teaches decoding dots and dashes. Practice with interactive challenges and progress tracking. Share achievements and compete with others.
Learn maritime with interactive quizzes and detailed flag information. Test knowledge with randomized questions. View Morse code signals using the phone’s flashlight. Track progress and identify areas for improvement through analytics.
Learn and practice Morse code through interactive lessons and quizzes. Input text to convert to Morse, or decode messages. Track progress and test speed. Share results and challenge friends.
The app generates random 5-letter words for Morse Code practice. It sends these words using the iPhone speaker and allows users to set WPM, dot speed, and tone frequency.