• Set Finder: no more 20-result limit. Every matching set class is now listed. • Set Finder: new note picker. Tap notes to search instantly, or type a Forte number (3-11) or pitch-class numbers (0 4 7). • Set Finder: with no notes selected, it now lists all 224 set classes (filter by size with the note-count chips). • New: K/Kh complexes. Open any set in Explorer to see the set classes that include it or its complement. • New: Serial Matrix in the Sequencer, for rows of 2 to 12 notes. Read P, I, R and RI forms straight from the grid. • Sequencer: every step can now use any inversion (I0–I11) and retrograde inversion (RI0–RI11). • Geometry: inversional symmetry axes are now drawn on the shape. • The settings button is now a gear and the sheet is called Settings. • Thanks to everyone who sent feedback!

• Fixed: Forte numbers are now correct across the whole app. The set class table was rebuilt from a verified reference and covers all 224 set classes, including Z-relations. • Improved Finder: search by Forte number (e.g. 3-11, 6-Z44), by pitch-class numbers (0 4 7, 047, T and E for 10 and 11), or by note names (C E G). • Finder results now list the exact set class first, then the closest matches. • Fixed the Berg Violin Concerto example so its pitch classes match set class 4-27. • Prime form now follows Rahn's algorithm.