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

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

by Knock Software, Inc

131 ratings
278 reviews
🔧 Utilities
📊 Productivity

Archived App (Last seen on 30 May 2026)

This is an archived listing of the app previously available on the App Store.

Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.

Details

  • Released
  • Updated
  • November 5, 2013
  • June 8, 2015

Features

Developer

Knock Software, Inc
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iphone
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⭐278
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❓5 answered
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About

Unlock your Mac instantly and securely using your iPhone or Apple Watch. Simply double-knock on your phone, even from your pocket, or tap your watch to gain access. This app utilizes low-energy Bluetooth for efficient battery usage.

✓Unlock Mac with iPhone
✓Unlock Mac with Apple Watch
✓Double-knock to unlock
✓Secure Bluetooth Low Energy
✓Pocket unlocking
Show original description

What's New in Knock

2.0.2

June 8, 2015

This app has been updated by Apple to display the Apple Watch app icon. - Fixes a bug that could cause Knock to fail to connect when your Mac is locked.

More

User reviews

Most RecentHighest RatedLowest Rated

Doesn’t work

I’ve installed this twice.

It works once. Then never again.
The_PanicwaveThe_Panicwave

Could you update please?

I purchased the app and it only worked for a short time until it didn’t, I’m sick of looking at the app on my phone and watch and want to delete it and keep checking to see if it’s updated, and it’s not.
302FordGirl302FordGirl

Doesn’t work for me

Macbook pro mid 2015
Mac os catalina
iPhone 11, ios 13.3
Setup finished ok, laptop part of software can see iphone and.. thats it. Can not unlock
ElektroMouseElektroMouse

Cash grab app

Developers dropped updates and further development of this app. At this point it needs to be pulled. Don’t waste your money as this won’t work for you.
TheEmptyManTheEmptyMan

Doesn’t work

Used to be a cool app but hasn’t worked for years since they stopped updating it. Super lame.
Jakie558743477738464763Jakie558743477738464763
See 273 more reviews

FAQ

What does Knock do?

Knock allows you to unlock your Mac without typing your password. You can use your iPhone or Apple Watch to authenticate, making the login process faster and more secure. It leverages your existing devices to provide a seamless experience.

How does Knock work?

Knock uses Bluetooth Low Energy to securely communicate between your iPhone or Apple Watch and your Mac. To unlock, you simply double-knock on your iPhone (even when it's in your pocket) or tap your Apple Watch. Your Mac will then unlock automatically.

Is Knock compatible with all Macs?

No, Knock is not compatible with all Macs. Before purchasing, it is essential to check the compatibility information provided in the app's screenshots to ensure your Mac is supported. The app requires specific hardware and software configurations.

Does Knock drain my iPhone's battery?

No, Knock is designed to be very battery-efficient. It uses Bluetooth Low Energy technology, which draws minimal power. You can use Knock all day, every day without significant impact on your iPhone's battery life.

What is the cost of Knock?

Knock is a paid application. The description indicates it is a one-time purchase, with no mention of subscriptions or in-app purchases for core functionality. Users should check the app store for the current pricing.