Spring physics, built in
Every interaction runs on a real spring solver, not a fixed curve. Tune tension and bounce with two numbers and watch components settle like memory foam.
The softest way to ship
Make software feel huggable.
PILLOW is the design toolkit for teams who believe interfaces should bounce, squish and smile back. Rounded to the core.
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Bouncy components
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Squish response
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Happy builders
Deployed3 seconds ago
+18% delightthis sprint
Loved by users4.98 rating
Why teams go soft
A toolkit that treats every pixel like a cushion.
Drop in components that already know how to bounce. PILLOW handles the physics, the easing and the joy — you just write the app.
Rounded tokens
A radius scale that never has a sharp corner in sight.
Haptic hints
Optional micro-vibration on supported devices for real touch.
Morphing blob system
Generate infinite organic shapes from a seed. Blobs interpolate smoothly between states so backgrounds, avatars and loaders all feel alive.
Zero-config theming
Pick two colors and PILLOW mixes an entire soft palette — tints, shades, and cheerful accents — accessible contrast checked automatically.
Poke the playground.
Move your cursor across this panel — the blobs drift toward you and squish on contact. Tap a button below to feel the spring. This whole field is one canvas of morphing, wobbling shapes.
Fluffing up, in three
From flat to fluffy in an afternoon.
1
Install the cushion
One line adds the PILLOW runtime. It ships as a 9kb spring engine plus your chosen component set — tree-shaken to only what you touch.
2
Round the edges
Wrap any element and it inherits the softness — radius, shadow, and a hover that gently lifts. Opt into bounce per component or globally.
3
Let it breathe
Ambient motion keeps the interface alive at rest. Ship it, and watch your delight metrics quietly climb while support tickets fall.
Kind words
People got attached.
"Our onboarding used to feel like a form. Now it feels like a friend nudging you along. Retention jumped and nobody can explain exactly why — but I can. It's the wobble."
"I replaced 40 hand-tuned animations with PILLOW springs in one sitting. The morphing blob loader alone got more Slack reactions than our last launch."
"It's the first design system my whole team actually enjoys using. Rounded, forgiving, and it never fights us. We stopped arguing about easing curves entirely."
Go make it squish.
Free forever for solo builders. Bring your team when they get jealous — and they will.