iOS app · Available on the App Store

Pitch is a muscle.
Work it.

jAMSKOOL · sing trainer

A daily pitch-training gym for your voice. Sustained tones, interval drills, sung scales. Real-time visual feedback on every note so you learn exactly where your voice sits — and where it needs to go.

No subscription No ads No account needed iOS
Download on the App StoreAvailable on iPhone · $9.99 USD
jAMSKOOL Sing Trainer — Home screen

Features

Everything your voice needs.

Built for singers, instrumentalists, and anyone who wants a more reliable voice.

🎤
Real-time pitch feedback
Sing into the mic and see your pitch plotted against the target in real time. Every cent of deviation visible instantly — no more guessing whether you're sharp or flat.
🎙️
Voice range calibration
Pick a voice type or sing your exact range. Drills stay inside your voice — not outside it.
🎼
Scales, any key
Major, minor, and more. Any key, any range. Randomize the note order, or walk stepwise up and down.
🎯
Arpeggios
Triadic leaps — root, third, fifth. Train the shapes of harmony and build the intervals you actually use.
🎲
Random notes
Anything goes within the key. Dial in speed, jump style, chromatic intensity. Sharpens your "find any pitch, fast" reflex.
📐
Three difficulty levels
Easy, medium, and hard — across every exercise. Progress gradually or jump straight into the deep end.
📈
Progress tracking
Every session saved. Watch your sessions, perfect rounds, and streak build up over time.
🔒
On-device processing
Your microphone audio never leaves your phone. Pitch detection runs locally. No servers, no uploads, no recording — just the app and your voice.

Exercises

Three ways to train your voice.

Each exercise targets a different aspect of pitch control. Do a couple every day.

  • Random Notes — anything goes within the key. Sharpens your "find any pitch, fast" reflex.
  • Scales — stepwise, up and down. The bread and butter of pitch accuracy.
  • Arpeggios — triadic leaps. Root, third, fifth. Train the shapes of harmony.

What's inside

A look around the app.

Swipe through to see how it works.

Sing Trainer home screen with Practice, Progress, and Calibrate Voice

Practice, Progress, Calibrate. Clean home screen.

Voice calibration screen with Soprano, Mezzo, Contralto, Tenor, Baritone, Bass options

Find your voice range — or sing it in yourself.

Practice menu with Random Notes, Scales, and Arpeggios

Three exercises. Focused for training. Fun for play.

Random Notes configuration with speed, jump style, chromatic intensity, range, and key options

Dial in speed, range, jump style, and key.

Scales configuration with speed, range, key, randomize toggle, and scale type

Any key. Any scale. Any range.

On stage

Turn sideways. See every note.

Landscape gameplay gives you room to breathe. Scale degrees labelled. Root notes flagged. Your pitch drawn live across the staff as you sing.

Random Notes landscape gameplay with scale degrees 1, 5, and 7 in the key of E

Pricing

Pay once. Keep forever.

No subscription. No ads. No account. Just the app.

One-time purchase

$9.99 USD

approx. $13.99 CAD · one-time

Download on the App Store →

jAMSKOOL Sing Trainer collects no personal data. Microphone audio is processed on-device only and never transmitted. Progress is stored locally and never uploaded. No account required. Full privacy policy →