Ditty teaches Morse with a key you can actually press

Field notes

Ditty organizes Morse around a branching tree in which dots move left and dashes move right, rather than presenting the alphabet as a flat reference table. The page describes full-speed character playback with Farnsworth spacing, separate sending and receiving drills, and a five-turn QSO that includes call, procedure, and sign-off. It also outlines an Android keyboard, an audio decoder that estimates sender speed, and a torch-based signal lamp, though those app features are presented as part of the forthcoming release.