Description DeYin is a music analysis tool designed for melodies from vocals and musical instruments. The app records musical input and analyzes notes, phrases, as well as possible keys and chord suggestions, helping you understand melodic structures. Features Tuner for precise pitch detection Recording of vocals and musical instruments Note analysis and editing with suggestions for keys and chords Phrase and timeline editing Save, export, and import projects Export MIDI files for further editing in DAWs Import and export to enable working across multiple devices (smartphone, tablet, and desktop) Multi-language support: German, English, and Chinese Customizable interface with adjustable color schemes and text size Intended Audience & Notes DeYin is designed for beginners, musicians, composers, and learners who want to understand and work with musical structures. DeYin does not generate content and does not replace a Digital Audio Workstation (DAW). Analysis results are provided as guidance and suggestions only and do not represent definitive outcomes. All creative decisions and responsibility remain with the user. All data is processed locally on the device.