Syllable Counter
音节计数器 · 每行唱起来顺不顺，一数便知
Melodies are built on syllables, not words. Paste your lyrics, and we'll count every line, flag the lines that will fight your melody, and tell you whether the whole verse fits a 4/4 groove at a normal tempo.
How the counter works English syllables are estimated by vowel-group rules (a dash in a word splits it). It's close enough for songwriting; if one line feels off when sung, trust your ears over the math.