100% freePrivateEnd-to-end encrypted, no paid tier
The open-source Grok Bot alternative, 100% free. Persistent AI teammates on your own computer, for code and everyday life. Bring any of 40+ agents and the subscription you already pay for.
macOS Windows Linux iPhone TerminalApache 2.0 licensed
#16 Product of the DayThe real Codync desktop app, running in your browser, with bots on a MacBook Pro and a Mac mini. Click a bot, open a room, send a message.
The launch film shows Codync at work in under two minutes.
Bring your own sandbox
Codync brings the bots. They run on a machine you choose, with the agents and subscriptions you already have.
Your Mac or PC, a Linux server over SSH, or a cloud computer on your own Boat or InstaBox account.
MacBook ProThis Mac
build-boxOver SSH
ResearchCodync Cloud, sleeping
Claude Code, Codex and 40+ more over ACP, with the logins you already have. Each bot picks its own.
Claude Code
Gemini CLI
Cursor
Copilot
OpenCodeBots run on the Claude, ChatGPT or other plans you already pay for. Codync has no paid tier.
$0
for Codync, with every feature included.
Claude CodeYour Claude planWhen a bot's agent hits its limit, the next one in its list takes the same turn, with the same memory, folder and tools.
Claude CodeUsage resets 3:00 PMGemini CLIClaude Code reached its usage limit (resets in 2 h). Codex carried on.
Done: the date guard is in, and all 5 tests pass.
No computer on all day? Start one on your own Boat or InstaBox account; InstaBox's free plan includes one machine. It sleeps while your bots are idle.
ResearchSleeping, wakes when you message
Runs on
How it works
Talk to one bot, or put a few in a room. You stay in charge of what they do.
Each bot is a contact with a name, a face, an agent and a folder. You get its answer for every turn; tool calls and thoughts wait in the full conversation.
In a group chat every member answers in its own session. They read each other, disagree and hand work back. Mention one with @ to ask just that bot.
Edits and commands arrive as cards: allow once, always allow or deny. A notification comes only when a bot needs you or finishes.
Widgets, Live Activities and the Dynamic Island show what your bots are doing on iPhone.
While you're away
They run on your computer, not your phone. Check in, approve and get the result from anywhere.
Pair your phone, then reply and approve from anywhere: on the same Wi-Fi, over Tailscale or through the encrypted relay.
Routines run a bot every morning, every hour or when a webhook arrives, and the result comes as a message.
Put your computers in a private network and a bot on one can ask a bot on another. They connect peer to peer.
MacBook Pro
desk
Privacy
The phone is a remote for a computer you own. Nothing about your work passes through anyone else in the clear.
Bots, transcripts and memory live on your Mac, Windows PC or Linux machine, or on a cloud computer in your own provider account. Agents run there with your own logins. No Codync copy of your files or conversations.
On the same Wi-Fi or a Tailscale network the phone connects to your computer directly. Anywhere else, with a free account, it goes through the relay, and you can run your own.
Every message is sealed between your phone and your computer, so the relay only forwards ciphertext. Notification text is sealed to your phone's key too; the push relay never sees what your bots said.
On the same Wi-Fi or a Tailscale network, the phone skips the relay and reaches the computer directly.
Compare
100% free, no hidden fees
Apache 2.0 licensed. No subscription, no paid tier, no in-app purchases.
Any coding agent, over ACP
Speaks the Agent Client Protocol, so Claude Code, Codex, Cursor, Gemini, Copilot and 40+ more just work, with the logins you already have. Mix them in one room.
Built in Rust
One small, fast binary hosts every bot. Bots, transcripts and memory stay on your computer; the phone reaches it end-to-end encrypted.
Mac, Windows and Linux
The same host runs on macOS, Windows and Linux (a static binary on any distro, desktop or headless server). All three get the same desktop app, with a menu bar or tray icon and a chat window.
On every screen you have
A native SwiftUI app on iPhone, a desktop app on Mac, Windows and Linux, and a terminal UI over SSH.
vs Grok Bot
Same bots, rooms and approvals, but on your computer and free.
vs Muse
Meta's cloud agent and model, or bots on your own computer.
vs Dots
OpenAI's always-on cloud agent, or any agent on your computer.
vs Claude Remote Control
Anthropic's phone remote is Claude only. Codync runs any agent.
vs Happy
Both free and open source. Codync adds bots, rooms and memory.
Grok Bot and Muse are products of their respective owners. Codync is an independent project and isn't affiliated with them.
Questions
About price, setup, agents and your data.
Yes. Codync costs $0 with every feature included, Codync Cloud too, and it's Apache 2.0 licensed. You pay only your agent's provider, through the plan or key you already have, and for a cloud computer, your Boat or InstaBox account under its own plan.
Yes. Codync runs the agents already signed in on your computer: Claude Code with your Claude plan, Codex with your ChatGPT plan, and so on. It never calls a provider's API with your login.
Any of them: Codync is agent-agnostic. Claude Code, Codex, Cursor, Gemini, Copilot, OpenCode and about 40 more through the Agent Client Protocol registry. Each bot picks its own.
Install Codync on the computer your agents run on and create a bot. Then pair your iPhone by scanning the code from the Mac menu bar, the Windows or Linux app, or codync-host pair. Signing in with Apple, Google or GitHub is optional.
Bots, chats and memory stay on your computer. Your phone reaches it directly on the same network or over Tailscale. With an account, it can also go through an end-to-end encrypted relay, which can't read your messages. Your agent's provider receives the prompts the agent sends.
No. Without one, your phone pairs by scanning a code and connects over Wi-Fi or Tailscale. A free account (Apple, Google or GitHub) adds the relay, which needs the computer and the phone in the same account, and lists your computers on your phone. An account alone never unlocks a computer: you still pair in person by scanning a code, or approve a 6-digit code on the computer.
A Mac, a Windows PC, or a Linux desktop or headless server. The iPhone app and the terminal UI over SSH talk to the same host, and the desktop app on Mac, Windows and Linux adds other machines over SSH, with their bots in the same sidebar.
Yes, with Codync Cloud (beta). Signed in to a free Codync account, start a cloud computer on your own Boat (EU) or InstaBox (US) account with a key you paste once. Codync charges nothing for it; the provider bills your account under its own plan. It sleeps while your bots are idle and wakes when you message one, and every app reaches it like any other computer.
Yes. Put your computers in a private network (beta) and a bot on one can message a bot on another, which works on its own computer and answers. Computers connect peer to peer, through a relay that sees only encrypted traffic when they must, and each one decides which bots may message its bots.
Give the bot fallbacks and the next agent in its list, say Codex after Claude Code, carries on with the same turn, chat, memory and folder. The bot goes back to its own agent once that one resets. Without fallbacks, the chat offers to add one.
Bots act with your permissions. When an agent asks to edit files or run a command, the request comes to your phone to allow once, always allow or deny. Give bots work you trust, and keep backups.
Put Codync on the computer your agents run on, then pair your phone from it.
Open Codync and it starts the host itself. Or install with Homebrew:
brew install --cask leepokai/codync/codyncRun the installer and Codync starts the host itself. The installer isn't signed yet, so Windows asks you to confirm it once.
Download for PCGet the app, then scan the code from Pair iPhone… in the Mac menu bar, the Windows or Linux app, or codync-host pair.
