Della is a breathing instrument for iPhone and Apple Watch that finds your personal resonant breathing rate and paces you to it, eyes closed.

A breathing instrument

Your calm has a
frequency.

Della finds your body's resonant breathing rate, then paces you to it. Eyes closed, by feel.

Coming to the App Store
See how
The problem

Most breathing apps drift, clutter the screen, and leave you guessing whether it's even working.

Find your rate

The one pace your body settles at.

Everyone has a resonant rhythm, the breath where heart, lungs, and pressure fall into sync. Your Apple Watch reads your heart and finds yours in a few quiet minutes.

Della on Apple Watch, showing a measured resonant rate of 5.5 breaths per minute
Breathe by feel

No screen. No counting.

A gentle pulse leads every inhale and every release, on your wrist and your phone. Turn the screen off, close your eyes, and just follow it.

The Della breathing instrument on iPhone, a glowing disc mid-inhale
See it settle

Watch your number move.

Della tracks your resonant rate over the weeks, so you can see it settle. Quiet proof the practice is working, not a streak to guilt you.

Della's progress screen, a chart of resonant rate settling over the weeks
Why Della

An instrument, not a wellness app.

Precise to the millisecond Works on Apple Watch, screen dark Nothing leaves your device
Find your resonant breath

Breathe at the pace
that settles you.

Coming to the App Store

7-day free trial, then $99.99/yr or $199.99 once, yours forever.