Light · your own little cove

Messaging that just works.

Buko is a lightweight messenger — fast 1:1 and group chats, Moments, and voice & video calls.

Get the app Open web app

iOS · Android · Web.

Light & fast TLS in transit Your history, on device

One account, every screen.

Native iOS and Android, plus a full-featured web app.

Conversations

Chats that feel instant — and stay in order.

Real-time 1:1 and group messaging with delivery and read receipts, edits, replies, and photo sharing.

  • Delivery & read receipts
  • Edit, reply & forward
  • Owner / admin / member roles
Standup in 5?
On my way 🏃
Nice work on the release ✨
thanks! shipping the rest today
Voice & Video

Crisp calls, with screen share.

1:1 and multi-party voice and video, plus screen sharing — carried over a global, low-latency media network.

  • Group calls
  • Screen sharing
  • Low latency worldwide
R
M
A
You
Moments

A calm, friends-only timeline.

Share text and photos with just your contacts — a calm feed of the people you actually know, in the order they posted.

  • Friends only
  • Chronological feed
  • Text & photos
L
Lena
2h
Golden hour at the harbor 🌅
K
Kai
5h
New coffee spot — highly recommend ☕
Developer platform

Build bots & agents on Buko.

A clean Bot API for message ingress and egress, realtime gateway or long-poll delivery, permissions, and quotas. Your agent runs anywhere — Buko is the channel.

  • Realtime gateway or polling
  • Scoped permissions & quotas
  • Media, edits & group routing
Read the docs
Send a message 
# POST a message as your bot
curl https://ims.buko.app/bot/sendMessage \
  -H "Authorization: Bot <token>" \
  -H "Content-Type: application/json" \
  -d '{
    "chat_id": "space_7p9m2x",
    "text": "Hello from your agent 👋"
  }'

# → { "ok": true, "result": { "message_id": "482" } }
Made for you

Your data stays with you.

Your chat history lives on your device, and the server keeps just a short-lived cache to sync your devices — so you stay in control.

TLS in transit

Encrypted connections, everywhere.

Your data, on your device

Your history lives with you, synced across every screen.

Delete anytime

Remove your account and data whenever you want.

Questions & answers

Is Buko free?

Yes — Buko is free to use.

Which platforms are supported?

Native iOS and Android apps, plus a full web app at web.buko.app. Your conversations sync across all of them.

How do you handle my data?

Your chat history lives on your device, and connections are secured with TLS in transit. See our Privacy Policy for exactly what's stored and for how long.

Can I build a bot?

Yes. Buko has a Bot API for sending and receiving messages, with realtime or polling delivery. See the Developer Docs to get started.

How do I delete my account?

You can delete your account and data anytime from the app settings, or from the Delete Account page.

Your own little cove awaits.

Simple, calm, and ready for your first conversation.

Get the app Read the docs