pet it · drag to spin · double-click to recolor
A tiny cat for
desktop
Purrbyte is a voxel kitten that lives on your screen — it wanders, naps in a cardboard box, begs for water, levels up while you focus, and celebrates when your AI coding agent finishes a task.
macOS 12+ (Apple Silicon) · 6 MB download · from $9 once, yours forever
It really lives on your screen
The cat wanders along your dock, hunts your cursor, purrs when you pet it, stretches after a nap and gets dramatic when it wants water. Drag it around — it wobbles like mochi.
A box, a bowl, a yarn ball
Its little household sits right on your desktop: a cardboard box to curl up in, a water bowl, a food dish and a yarn ball it kicks across the screen. Hide or move each one wherever you like.
It sits your focus out with you
Start a Pomodoro straight from the cat's menu — quick, classic, long or deep. The cat keeps watch while the timer runs, stretches with you on the break, and earns experience for every session you finish.
It levels up with you
Care, play, petting, naps and finished Pomodoro sessions all feed the cat's experience. The Dota-style skill radar shows the personality your cat grows — playful, cared-for, focused.
Make it yours in a minute
Name it, pick a coat, choose the size and what it owns — or paint a completely custom skin in the pattern editor. Sign in and your cat follows you to any Mac.
It needs you a little
Water, food, sleep and play — the small tamagotchi loop, with soft sounds and gentle nudges. Never guilt-trips you, never nags twice.
Paint your own coat
Pick from ready-made coats or open the pattern editor and draw your cat pixel by pixel — stripes, socks, a patch over one eye.
Feels your AI agents
Optional hooks for Claude Code, Cursor and Antigravity: the cat ponders while your agent thinks and celebrates when it's done.
Actually alive
Walks your screen, sleeps in its box, drinks, eats, plays with a yarn ball, purrs when you pet it — and asks for help when it needs you.
Focus companion
Built-in Pomodoro: the cat guards your focus session, stretches with you on breaks, and earns experience when you finish.
Levels & skills
Care, play and focus feed a Dota-style skill radar. Your cat's personality chart is the story of how you two live together.
Cloud cat
Sign in and your cat — level, skills, colors — follows you to any Mac. Sign out and it lives happily offline.
Zero permissions
No accessibility access, no screen recording, no microphone. A native app — 6 MB to download, 14 MB on disk — that asks for nothing and runs on crumbs.
Quiet by design
Lives in your menu bar, not your dock. Wakes up with your Mac if you want it to, and gets out of the way when you're presenting.
Our little promises to you
- Your cat is yours forever. We will never remotely switch off an app you've welcomed into your home.
- One adoption fee, every Mac you own. Take your little friend wherever you go. No yearly rent.
- The app keeps growing. We'll keep pouring love into the app, adding new features and mechanics over time. These core updates will always be completely free.
- A quiet, private life. No ads, no trackers, and absolutely no data collection. Just you and your cat.
- 14 days to make sure it's a match. If you two don't click, just email us for a full refund. No questions asked!
Is it a subscription?
Not at all! You adopt your cat once, and it happily lives on every Mac you own forever. But if you want to spoil your cat with new toys, seasonal decorations, and support the creator, we’d love to welcome you to our optional Club!
How do I interact with my cat?
You can gently drag the cat around, pet it with your cursor, or press the S key to ask it to change its posture (sit, sleep, or stand). Keep in mind, your little friend is only fully active and wandering around when it's standing on all four paws!
What if we don't get along?
Just drop an email to support@purrbyte.app within 14 days and we'll gladly refund your adoption fee. No awkward forms, no questions asked. We want every cat to find the perfect home!
Does it need any scary macOS permissions?
Not a single one. No screen recording, no microphone, no accessibility access. It's just a harmless little friend drawing itself in a transparent window on your screen.
Can it watch me code with AI?
If you want! There's an optional, completely private hook for Claude Code, Cursor, or Antigravity. Your cat will sit and ponder with you while the AI thinks, and celebrate when the work is done.
Can I take my cat to my other Mac?
Absolutely! If you sign in, your cat's name, custom coat, and personality will follow you to any Mac. Or, skip the account and let it live a cozy, strictly local life.
Will it make my Mac sleepy?
Not at all! It's a tiny, lightning-fast native app. It takes up just 14 MB on your disk and runs incredibly light, so your Mac won't even notice it's there.
Adopt once, yours forever
A cat is a companion, not a rental. Pay once and it's yours — on every Mac you own, for as long as you keep it. Same cat at every price; the higher ones just keep me fed.
Nine dollars is the real price. Anything above it is you being kind, not you unlocking things.
Your country may add sales tax or VAT at checkout — the exact total is shown before you pay.
purrbyte.lifetime
$12 once
✓ Every coat, box and toy in the app today — forever
✓ Paint unlimited coats of your own — editor included
✓ Focus companion + skill radar
✓ Optional AI agent hooks
✓ Free updates, nothing to renew
✓ 14-day refund, no questions
Adopt your catpurrbyte.club
$3 / mo
For people who want to chip in
Not a subscription to features — a way to support the work, if the cat won you over.
✦ First in line: everything new made for the cat's home reaches you first
✦ Yours to keep: whatever you receive stays forever, even if you cancel
✦ Coats stay free: the pattern editor is free today and will stay free
✦ Cancel anytime: yourself, in the billing portal — no need to email me