What is LockIn used for?

LockIn is an MCP server and distraction blocker that lets AI assistants such as Claude and ChatGPT block sites system-wide on macOS, Linux and Windows. It is a good fit for developers who want an AI assistant to enforce focus time and blocking social sites during deep work sessions.

How much does LockIn cost?

Paid plans for LockIn start at $2.99 per month, and there is no free plan. A free trial is available.

Is LockIn open source?

No. LockIn is proprietary (closed-source) software. In the Productivity category, open-source options include Rectangle, Maccy and Vimium.

What are some alternatives to LockIn?

Other SaaS products in the Productivity category include SiteKeeper, StopThat and Superpower for AI.

LockIn: features, pricing and alternatives

About LockIn

LockIn MCP lets you tell your AI assistant to block distractions, and the block is applied for real. You install it with one terminal command, connect it to an MCP-capable assistant such as Claude, ChatGPT, Cursor, Perplexity, Gemini or Poke, and then say what you are working on and for how long. Blocks are system-level, written to the hosts file, so they apply in every browser and survive restarts, new profiles and private windows, and your assistant can grant a timed exception when you need a site back.

A task-aware Chrome extension adds blocking that knows what you are working on, letting documentation pass while rabbit holes are stopped, and only block attempts, never browsing history, reach the dashboard. It runs on macOS, Windows and Linux.

LockIn offers a 3-day free trial. Yearly billing is $29.99, shown as $2.50 per month, a monthly option is listed from $2.99 per month and a lifetime license costs $59.99 once. The site also lists resources, a Chrome extension and install instructions.

Key features

Distraction blocking started through an AI assistant
System-level blocking in every browser
Persistence across restarts and private windows
Timed exceptions granted by the assistant
Task-aware Chrome extension
Works with Claude, ChatGPT and Cursor
macOS, Windows and Linux support

Good fit for

Developers who want an AI assistant to enforce focus time
Blocking social sites during deep work sessions

Tags: mcp; focus; website-blocker; productivity; claude; chatgpt; macos; chrome-extension

LockIn: questions and answers

What is LockIn used for?: LockIn is an MCP server and distraction blocker that lets AI assistants such as Claude and ChatGPT block sites system-wide on macOS, Linux and Windows. It is a good fit for developers who want an AI assistant to enforce focus time and blocking social sites during deep work sessions.
How much does LockIn cost?: Paid plans for LockIn start at $2.99 per month, and there is no free plan. A free trial is available.
Is LockIn open source?: No. LockIn is proprietary (closed-source) software. In the Productivity category, open-source options include Rectangle, Maccy and Vimium.
What are some alternatives to LockIn?: Other SaaS products in the Productivity category include SiteKeeper, StopThat and Superpower for AI.