A vocal trainer that listens. It tracks your pitch live so you can build sustain, extend your range, and land notes accurately. Everything runs on this page — your voice never leaves your device.
Embedded previews can't ask for the microphone — in its own tab, your browser will show the normal "Allow" prompt.
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±0¢ · — Hz
⚠ possible strain — ease up
Vowzer account
Save your AI Coach history and vocal range across sessions and devices. Optional — everything still works signed out.
Vowzer
vocal trainer
Range —Best hold —Notes matched 0
Free sing
Sing anything. Flat line = steady pitch.
Wobbly trace? Try Breathing, then Sustain.
Can't reach a note? Use Sirens — never push.
Sing along
Load a song — AI splits vocals from the beat, real karaoke.
Reading the vocal
HearKey
— with the melody
0:00 / 0:00
Any mp3/m4a/wav works. Separated locally — never uploaded anywhere.
Headphones required — speakers confuse the mic.
Gaps in the line are normal (breaths, dense mixes).
"Fit my octave" needs a saved Range first.
Sustain trainer
Hold one note dead steady. Losing pitch resets the clock.
Target
C3
Goal
0.0 s held
Pick a note in the middle of your range. Press Start.
Best this session
0.0 s
All-time best
0.0 s
Breathe low — release like fogging a mirror.
Start at 5s. Don't chase 20s on day one.
"Possible strain" = estimate, not diagnosis. Ease off anyway.
Pitch match
Hear a note. Sing it back. Hold it a second to score.
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Press Start to hear your first note.
Streak
0
Matched today
0
Unsure? Hum it first, then open to "ah."
Flat on high notes? Think "above you," drop the jaw.
Sirens
Follow the moving line — a slow siren up and down.
SpanLength
— on the line
Try a lip trill or "ng" — easiest to slide on.
Cracking at the top? Shrink the span, go lighter.
Daily beats forcing one big note.
Guide tone plays along — headphones help.
Range finder
Find your lowest and highest comfortable notes.
Lowest heard
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Highest heard
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Span
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Re-measure weekly, always after warming up.
~1.5 octaves is normal. Consistency beats extremes.
Breathing for sustain
Inhale 4, hold 4, exhale 8 on a slow "sss."
4
Ready
Cycles completed: 0
Hand on belly — it moves out, not your shoulders.
8-count easy? Try 12, then 16.
✦ AI Coach
3-minute voice check. Scores you, builds you a plan.
Warm up first — cold voice scores low.
5 quick parts: low, high, hold, match, siren.
Step 1
Arrange
Record a cappella — watch it scroll by in time, then zoom out to the full picture.
0:00 / 0:00
Record a short a cappella phrase to see its tempo and energy.
While recording or playing back, bars scroll toward the now-line, marked at whole, half, and quarter-note subdivisions.
Stop or pause to zoom out to the full recording — vocal placement and notes all at once.
Export gives a clean WAV — drop it straight into a DAW.
The beat-generation half of this idea (an AI writing the actual instrumental) isn't built yet — this tab is the analysis foundation for that, not the finished thing.
