PetOS PetOS

Changelog

Loading release notes…

Bring any character to life on your desktop

It moves, reacts, remembers, and grows with you on Windows and macOS. Interact naturally and collect every character you love. Not a chat tab.

Download for Windows Download for macOSBeta

macOS beta: on first launch, open System Settings → Privacy & Security and click “Open Anyway”.

On your phone? Open petos.one on your Windows PC or Mac to install PetOS.

Windows & macOS Private by default No subscription

Sign up free, start interacting now · Includes 50 Smart Points · Invite friends to earn 1,000 more

Fetching the latest release…

A real desktop moment: company, touch, and a timely reminder

Install. Meet your companion.

  1. Download

    Windows or macOS.

  2. Pick a pet

    Choose an official pet, explore Petdex, or import your own.

  3. Connect & bond

    Talk, pet, and bond — official AI is included, so you can start right away.

Alive enough to become yours

It approaches, reacts, remembers, and grows closer over time. Every character becomes a relationship, not a skin.

  • Talks, moves, reacts

    Starts chats, wanders the desk, answers your touch.

  • Mood & memory

    Each pet keeps its own mood and bond; important memories about you stay local and shared.

  • Remembers what matters

    Exact time or countdown, multiple items, and completion history — all local.

  • Private by design

    Conversations, reminders, pet data, and long-term memory stay on your machine by default.

See it in the app

Adoption, reminders, focus timer, and settings — the same warm desktop UI you'll use every day.

PetOS v7.0.0 Check for updates
Log in
My pets Settings About
Adopt a pet
Mint On the desktop

Together for 1 day

  • Mint Intimacy Lv 1 Edit Rest Leave
  • Ginger Intimacy Lv 2 Edit On stage Leave
  • Doro & Gugu Gaga Intimacy Lv 0 Edit On stage Leave
  • Vexa Intimacy Lv 0 Edit On stage Leave
Touch, pet, and wander — it reacts in every frame

A collection that grows with you

Keep one character close or collect many. Each has its own mood, conversation history, and bond with you.

  • Show or hide on the desktop
  • Mood and relationship progress stay per pet
  • Edit and organize anytime
Adopt a pet
1 Official pets Refresh

Official pets from PetOS. Avatars load first; the full pack downloads only when adopted.

Ginger A warm, playful presence on your desktop. v2.0.0 Already have
Mint A lively companion with a gentle, curious spirit. v2.0.0 Already have
2 Get from Petdex Petdex site

Search and adopt community-made pets.

Search name or slug Search
Popular on Petdex 5,000 community pets
Doro & Gugu Gaga Community pet
Adopt
Squidward Community pet
Adopt
bobo Community pet
Adopt
Han Li Community pet
Adopt
3 Import from this device

Import a Codex pet: choose a folder with pet.json and sprites.

Import Codex pet pack
Adopt an official pet, discover Petdex, or import your own

Any character can come alive

Adopt from the official collection, discover community creations on Petdex, or bring in a character of your own.

  • Codex pet assets compatible
  • Official pets and thousands from the Petdex community download only when adopted
  • Import local pet.json + sprites
PetOS Memory
Stored locally
From your conversation

I prefer quiet focus after lunch.

Important detail detected
Saved to long-term memory Shared across your companions

Personal: loves morning coffee and indie games

Recent: Tokyo trip next month · prefers quiet focus after lunch

View and edit anytime Save memories
Say it once. Your companion can remember it later.

A memory that carries the relationship forward

Your companions use one shared, editable local memory of what matters to you, while each keeps its own conversation history and relationship.

  • Important details organized from conversations
  • Long-term memory you can review and edit
  • Stored locally and shared across companions
Hey, a little gentler! Click the character and see how she responds
Touch her once. She answers back.

Every click gets a response

Tap gently and the character reacts in the moment. Keep tapping and her expression, words, and movement change with her mood.

  • A different response to every touch
  • Words, expressions, and actions move together
  • Interaction shapes mood and your bond

Afternoon tea time — time for a break!

Timer done — a gentle nudge to rest

Work hard. Rest well.

Start a 10, 25, or 50-minute focus session. Your companions stay quiet while the timer runs, then gently remind you to take a break.

  • 10, 25, and 50-minute focus sessions
  • No proactive chat while you focus
  • A warm break reminder when time is up
Reminder Your pet will remind you on this device
Upcoming 0 Done 1
No upcoming reminders. Create one below.

Remind me after

0hr 5min 0sec

Reminder

e.g. Drink water, submit the report… 0/50
Runs locally · No points used Close reminder Create reminder
Countdown or a set time, kept on your machine

New · Local reminders

Your pet remembers it with you

Create several reminders using an exact time or a countdown. Edit, delete, repeat, and review completed items without using AI or Smart Points.

  • Exact time and countdown modes
  • Multiple items with edit and delete
  • Local completion history for review
PetOS v7.1.5 Check for updates
Log in
My pets Stats Settings About
Together

A small record of your days together.

40 days together

68.9 hours together

Today’s moments

Today in chats, focus and reminders.

Today's chats: you 1 / pet 13

Pomodoros today: 1

Reminders done today: 1

Last 7 days
Memory notes

These notes feed long-term memory, chats and proactive care.

Personal: loves morning coffee and indie games Recent: Tokyo trip next month · prefers quiet focus after lunch

44/6000 Save memories
Days together, today’s activity, and memory that sticks

New · Companionship stats

See your bond grow

Track days together, today’s chats, focus sessions, and reminders. Edit memory notes that shape how your pet talks and cares for you over time.

  • Companion days and total hours together
  • 7-day activity chart and today's activity
  • Editable long-term memory for smarter chats

Simple, prepaid, yours

More moments together. No subscription.

PetOS stays free. Smart Points power official AI chats—top up only when you want more.

Starter

$4.99(USD)

400 Smart Points

A small top-up to keep the conversation going.

Get Smart Points Most Popular
Companion

$9.99(USD)

900 Smart Points

The comfortable choice for everyday company.

Get Smart Points
Deep Bond Best Value

$14.99(USD)

1500 Smart Points

Enough for permanent VIP, with Smart Points left to chat.

Get Smart Points
Free desktop app One-time payment No automatic renewal

Sign in first. Your balance follows your PetOS account across Windows and macOS.

Smart Point usage varies with conversation length.

Questions, answered

How is it priced?

The desktop app is free to download and use, with no subscription. Chatting is powered by the built-in official AI and your Smart Points.

Do I need an API key?

No — official AI is built in. Just sign in and start chatting.

Where is my data stored?

Conversations, reminders, pet data, and long-term memory stay on your machine. Account data is encrypted and stored in Singapore.

Which platforms are supported?

Windows and macOS, with download links above. Linux support is planned.

Does it interrupt my work?

No - during focus time it goes quiet. You control talkativeness, quiet hours, and sit mode.

In the works

More is coming for your companion — here’s what’s on the way.

  • More pets
  • Multiple pets together
  • Pet visiting
  • Pet diary

Install. Meet your companion.

It moves, reacts, remembers, and grows with you on Windows and macOS. Interact naturally and collect every character you love. Not a chat tab.

Download for Windows Download for macOSBeta