Sing Intervals: Vocal Trainer

Hear it, sing it, see how close you are. Sing Intervals is a vocal trainer for singers, choir members and solfège students. The app plays a starting note, asks you for an interval ("Sing a major third up"), listens to your voice and draws your pitch live on a semitone grid, with the target band right there. Then it tells you, in cents, how close you were. GRADED THE WAY A TEACHER WOULD • Only the steady part of your note counts: the attack and a scoop at the start are left out, and a natural vibrato is averaged • Cents from the target (sharp or flat), how steady you held it and how long it took to settle • In tune, close or not quite, with a hint when you sang the right note in the wrong octave, the start note again or in the wrong direction ALWAYS IN YOUR VOICE • Choose soprano, mezzo-soprano, contralto, tenor, baritone or bass, or set your own lowest and highest notes • Every start note and every target stays inside your range LEVELS • From seconds, thirds and fifths up to the tritone and sevenths, ascending and descending • The tolerance tightens from ±50 to ±25 to ±15 cents • Easy levels let you hear the interval first • Custom practice: your own intervals, directions and tolerance MORE TO SING • Scales: major, natural and harmonic minor, pentatonics • Arpeggios: major, minor and seventh chords • Short melodies to sight-sing from the staff • Hold the note: five seconds in tune • Note names in letters, Do Re Mi or German style, with fixed or movable do and scale degrees SEE YOUR PROGRESS • Accuracy and average intonation for every interval, up and down • What to work on: the intervals you sing sharp or flat, your hardest and your strongest • History of your notes and practice days PRIVATE BY DESIGN • Your voice is analysed on the phone in real time and never recorded, stored or sent • The microphone listens only after the reference note has finished; headphones are recommended • Sampled piano or a soft "ooh" voice, reference pitch from 415 to 466 Hz • Dark and light theme, 71 languages • Works offline. No account, no ads, no tracking, no data collected Made by Felice Marra Music Studios.