SoundBud does two jobs on one recording.
Decode: record a song, pick a file, or send one in from any app. In seconds you get the key, BPM, time signature and time-stamped chords laid out as bars, like a lead sheet. The chord model covers 301 chord classes, so sevenths, ninths, sus and slash chords survive instead of being rounded down to plain triads. Four AI modes then explain the same progression four ways: Roman numeral harmonic analysis marking diatonic, borrowed and secondary dominant chords; scale and note suggestions for soloing; reharmonization ideas; and a plain-language mode for beginners. Any value can be tapped and corrected, and everything downstream regenerates. Export as a PDF lead sheet, MIDI, or a visualizer video.
Polish: a full audio chain that runs entirely on the device. 6-band EQ, two denoisers, compressor, de-esser, breath control, automatic ducking, and mastering presets that hit the loudness target for Spotify, YouTube, TikTok or podcasts. No upload, no account, works offline.
Note names can be read in Western notation or solfege. Interface in English and Turkish. Free tier included.
Disclosure: I am the developer.
Alp Kurbetci 
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