One second brain across your devices and AI agents.
Start with your own model key. Upgrade for a hosted Brain that stays available across Web, iOS, Codex, Claude Code, and your capture channels.
Free
For validating the personal and cross-Agent memory loop.
$0self-serve
- Web capture and grounded Q&A
- Brain projects and Context Packs
- MCP connections for AI agents
- Bring your own model key
Pro
For a hosted second brain across devices, Agents, and channels.
$9per month
- Hosted account and sync
- iOS capture, Brain review, history, and audit
- Codex and Claude Code continuity
- Browser, Telegram, DingTalk, Feishu channel setup
- Portable account backup
Model provider charges are billed by the provider you configure. memduck stores the account settings needed to run your workspace.