The Pebble · Hardware · Shipping late 2026

A pulse in each palm.

A pair of palm-sized, wireless, haptic pebbles. For people who don't want their phone in it.

The app is enough for most people. For some — eyes closed, in bed, or in a clinician's office — a dedicated pair of tactile devices is a calmer primitive. No heat, no screen, no sensors. We've been designing the Pebble for the last year and a half. It's close.

In development · late 2026
TheraJoy Pebble — a pair of matte black haptic stones balanced together, one above the other, with a soft green indicator LED.
A single Pebble resting in a palm, showing its palm-sized scale and soft-touch matte finish.
The size of a plum

Small enough to forget you're holding it.

The Pebble is contoured to sit in the crease of your palm. There's no heater, no screen, no ceremony — just a soft-touch silicone skin over a quiet haptic core. Nothing about it feels like a gadget.

58mm
Diameter
74g
Per pebble
14h
Battery
Specification

The short spec sheet.

Weight (each)
74 g about a small plum
Shell
Recycled-aluminum core, soft-touch silicone skin slate · sage · clay
Diameter
58 mm palm-sized, eyes-closed
Haptic driver
Linear resonant actuator, 0.3–1.5 Hz, 10 intensity steps
Battery
14 hours of continuous stimulation USB-C to dock
Connectivity
Bluetooth LE · pairs to phone & iPad no account needed
Inputs
Single-press · long-hold · tilt-to-sync
Audio
None. By design.
Screen
None. By design.
Price (est.)
$279 for the pair includes dock & linen pouch
The Pebble pair — a pair of matte black haptic stones, each with a subtle green LED and TheraJoy wordmark etched on top.
Design notes

Things that are not on it.

i.

No display.

A screen invites a glance, and a glance invites a notification. The Pebble has one status LED, facing inward toward the dock, and that's the entire feedback surface.

ii.

No account.

Pair once via Bluetooth; it remembers the phone. No registration, no cloud login, no email. If you lose the device, you just pair a new one.

iii.

No biometric sensors.

No heart rate, no SpO₂, no sleep tracking. We thought about it. We decided a tool for calming shouldn't also be a tool for measuring yourself.

iv.

No speaker.

Audio plays, if you want it, from your phone or earbuds. The Pebble is a haptic object; that is the whole thing it does.

v.

No logo, on the outside.

A small mark is etched under the USB-C contact, where the dock hides it. The visible surface is one continuous curve.

vi.

No sharp edges.

Machined from one piece, skinned in soft-touch silicone. No heating element — just a quiet, continuous curve that sits in the hand. It does not feel like a gadget.

vii.

No heat.

To be transparent: the Pebble does not warm itself. There's no heater, no thermoelectric element. The silicone skin picks up whatever your hand gives it, and that's the whole story.

viii.

No subscription.

Buy the pair, keep the pair. No cloud service sits behind it, so there's nothing monthly to pay for.

ix.

No firmware theatre.

Updates, when they happen, are rare and small. You should be able to forget the Pebble is a device at all, and remember it only as an object.

Interaction

Three gestures.

Everything else lives in the app. The Pebble's job is to be in your hands.

i.

Press to begin.

A single press on either pebble begins your last-used preset. A second press ends it early, with a slow fade.

ii.

Hold for ambient.

Long-press either pebble for three seconds to drop into Ambient — a continuous, very slow rhythm that doesn't end until you press again.

iii.

Tilt to sync.

Tilt one pebble toward the other. They find each other and begin an alternating set. It's a small piece of delight.

The Pebble resting on a desk next to an Apple Pencil, lit by a warm side light with its green status LED glowing.
Three pebbles stacked in a small cairn — a quiet visual metaphor for bilateral stillness.
Late 2026

We'll write once, when they ship.
Nothing in between.

No drip campaign, no countdown. If you leave your email, you'll hear from us the week the first pair ships, and not before.

Approximately 1,400 on the list so far.