Your Phone
Is the Slide.
Push it away and the pitch drops. Pull it back and it rises. Open your mouth and it plays. Close it and it stops.
An Instrument of Its Own
The front camera measures how far the phone is from your face. That distance becomes the slide. There is nothing to blow into and nothing to plug in.
Hold It Up
Hold your phone in front of you, screen facing you. The front camera reads the distance between the phone and your face.
Work the Slide
Push away and the pitch drops. Pull back and it rises. All seven positions, from 1st close to your face to 7th at arm's length.
Open Your Mouth
Open it to play. Close it to stop. Or hold the pad on the screen instead. Your choice.
Slide Positions
Close = high · Far = low
Free, and Yours to Keep
No account. No ads. No subscription. One purchase adds the rest.
Free
Free
- The slide: all seven positions, 1st through 7th
- Your mouth: open to play, close to stop
- Seven partials, B♭2 up to B♭4, chosen with your thumb
- A buzzy brass tone, rich in harmonics
- The name of every note you play
- A three-step guide that fits the slide to your arm
The Full Instrument
$0.99
One purchase, once. No subscription, ever.
- Everything in Free
- Wah — your mouth works like a plunger mute
- Pure — a simple mellow tone for hearing pitch
- Lips — let your mouth choose the partial
- Assist & Snap — intonation help that draws you to each position
- The Staff — every note on a live bass staff with cents sharp/flat
- Solfège — note names as Do, Re, Mi
Good to Know
- Face tracking runs on your device
- Range is E2 to B♭4 — two and a half octaves
- For iPhone and iPad, held upright
- Works best in good light, with your face in view
- No account, no ads, no subscription
Your face is the instrument.
Move your phone, open your mouth, and play. Free on iOS and Android. Unlock everything for $0.99 — one purchase, once.