one-song-a-day music diary, with no ads and no subscription. Record the song that matched your mood today, a short note, and a mood wave, then look back through the calendar. ■ One song a day, no pressure Search → write a note → pick a mood step. That's all. One record per day means each song you keep is one that truly mattered. ■ Mood waves for the feeling Five steps from calm to intense, visualized as waves. The shape of the day at a glance. ■ Build your own flow Each recorded day becomes…