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Knock is a faster, safer way to sign in. You keep your iPhone with you all the time. Now you can use it as a password. You never have to open the app -- just knock on your phone twice, even when it's in your pocket, and you're in.

What's New

Version 1.1.7:
  • Fixed a bug that could cause Knock to stop connecting on iOS 8 and/or OS X 10.10 betas
  • Fixed a bug that could cause the Knock ring to keep spinning even though Knock is connected
  • Fixed a crash that could occur when gathering iOS diagnostic logs


  • OS X 10.8 or later
  • Mac which supports Bluetooth Low Energy: 2011 MacBook Air or later, 2012 MacBook Pro or later, 2012 iMac or later, 2011 Mac mini or later, or 2013 Mac Pro
  • Knock for iPhone $3.99 on the iTunes Store
  • iPhone (4S, 5, 5C, or 5S) running iOS 7 or later

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Current Version (1.x)


Downloads 2,492
Version Downloads 875
License Free
Date 30 Jul 2014
Platform Intel 64 / OS X
Price Free
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