App Detail » Knock – unlock your Mac without a password using your iPhone and Apple Watch

What's New

This app has been updated by Apple to use the latest Apple signing certificate.

- Fixes a bug that could cause Knock to fail to connect when your Mac is locked.

App Description

Knock and Apple Watch: a match made in heaven. Knock 2.0 makes unlocking your Mac faster and more secure than ever.

You keep your iPhone with you all the time. Now you can use it as a password. You never even have to open the app— just knock on your phone twice, even when it’s in your pocket, and you're in. And if you have an Apple Watch, you can unlock your Mac right from your wrist.

Using Knock won't drain your iPhone's battery, even if you use it all day every day. Knock securely communicates with your Mac using Bluetooth Low Energy, a new technology that draws very little power.

BEFORE PURCHASING KNOCK, PLEASE CHECK THAT YOUR MAC IS COMPATIBLE IN THE SCREENSHOT BELOW.

Have a question? Email us at [email protected] and we'll get back to you within a day.

App Changes

• November 05, 2013 Initial release
• November 21, 2013 New version 1.0.2
• December 24, 2013 New version 1.0.3
• January 01, 2014 Price decrease: $3.99 -> $0.99
• January 02, 2014 Price increase: $0.99 -> $3.99
• January 23, 2014 Price decrease: $3.99 -> $2.99
• January 30, 2014 Price increase: $2.99 -> $3.99
• March 14, 2014 Price decrease: $3.99 -> $0.99
• April 03, 2014 Price increase: $0.99 -> $3.99
• November 06, 2014 Price decrease: $3.99 -> $1.99
• November 07, 2014 Price increase: $1.99 -> $3.99
• December 08, 2014 New version 1.1
• April 25, 2015 New version 2.0
• April 25, 2015 Price increase: $3.99 -> $4.99
• May 21, 2015 New version 2.0.1
• June 09, 2015 New version 2.0.2
• November 05, 2015 Price decrease: $4.99 -> $1.99
• November 14, 2015 Price increase: $1.99 -> $4.99
• June 14, 2019 Price increase: $4.99 -> $5.99
• June 16, 2019 Price increase: $4.99 -> $5.99
• July 14, 2020 Price decrease: $5.99 -> $1.99