Show HN: A different approach to intonation training

Hi guys; Over the weekend I've created this using Claude Code. It's an ear training app destined to teach intonation and intervals to not so talented musicians like me. I spend many year playing guitar without a clear feeling on what intonation really was. It was after some string tuning exercises that it clicked for me. The freq sliding into the right place and feeling the correctness. I hope this app can helps other to feel that for the first time, or to increase the recognition of less common intervals. Any feedback is appreciated.