Tonality Visualizer vs Counterpoint Dojo

Tonality Visualizer is an interactive polar-pitch map that displays musical notes on a rotating disk. You can connect a MIDI keyboard or open a MIDI file — every note appears in real time. The app helps you see harmony, motion, and chord relationships, even without formal music theory. Main Features •MIDI Input: visualize notes directly from your keyboard or MIDI device. •MIDI File Playback / Trainer Mode: play or practice chord by chord. •Live Sound Option: enable/disable the built-in synth for input playback. •Physics-based Disk Rotation: the disk moves naturally according to musical torque. •Simple UI: switch between water-fixed / disk-fixed anchors, toggle UI visibility, bilingual JP/EN. Perfect for music learners, creators, and anyone who wants to “see” sound. Privacy No data collection. All processing happens locally on your device. License Open-source under the MIT License. Source code available on GitHub. Supported Formats •.mid / .midi files (Format 0 / 1) •CoreMIDI device input

Counterpoint Dojo is a learning app for studying the relationship between independent melodic lines through explanations, playable scores, and writing exercises. FEATURES - Introductory lessons and the five species of Fux-style counterpoint - Additional lessons on melodic writing, suspensions, minor mode, three voices, free counterpoint, imitation, and canon - Play every teaching example and listen to the voices together - Write notes into guided exercises and check the specified conditions - Save completed attempts and replay them later - Review rule violations in the five-species exercises VERSION 1.1 - Added seven advanced lessons with newly created teaching examples - Added twelve guided writing exercises - Added attempt history for reviewing past work PLEASE NOTE The app interface and lesson text are currently in Japanese. Exercise evaluation checks the stated conditions and rules; it does not judge the artistic quality of a composition.