Y Hacker News new | ask | show | jobs

user: batterylow created: 2021-01-26 karma: 436 contact(at)polyra(dot)com Founder at https://PlotAPI.com and https://DataCrayon.com submissions: 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments Show HN: I made an app to help memorize music notation and the guitar fretboard 8 points | 3 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments