Lockin icon
Lockin icon

Lockin

Lockin is a free, open-source distraction blocker built natively in Swift for macOS. It offers a lightweight, subscription-free alternative to apps like Opal, Cold Turkey, and Freedom.

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Cost / License

  • Free
  • Open Source (MIT)

Platforms

  • Mac  This is only for m series chips. Not intel. For intel, compile it yourself. Go into the github repo for instructions.
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Office & Productivity

GitHub repository

  •  2 Stars
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Lockin was added to AlternativeTo by Lucas-7628 on and this page was last updated .

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What is Lockin?

Lockin is a free, open-source distraction blocker built natively in Swift for macOS. It offers a lightweight, subscription-free alternative to apps like Opal, Cold Turkey, and Freedom.

Key Features:

  • Ultra-lightweight: ~22MB RAM idle usage
  • Anti-Tamper: Uses mach_continuous_time to prevent system clock bypasses
  • Force-Quit Resilience: Monitored by a native launchd supervisor
  • Instant Enforcement: Closes target apps instantly via direct Apple Events without requiring root (sudo) access
  • 100% Free & Open Source under the MIT License