# Knock – unlock your Mac without a password using your iPhone and Apple Watch > Unlock your Mac with your iPhone or Apple Watch using a simple knock or tap. (iPhone/iPad app by Knock Software, Inc.) - Source: https://appshunter.io/ios/app/knock-unlock-your-mac-without-a-password-using-your-iphone-and-apple-watch/id692929970 (this page in markdown: same URL + `.md`) - Developer: [Knock Software, Inc](https://appshunter.io/developer/512812703) - Category: Utilities, Productivity - Price: $1.99 - Rating: 2.30/5 from 131 App Store ratings · 278 written reviews indexed - Age rating: 4+ - Requires: iOS 7.0 · 12 MB - Languages: American English - Released: 2013-11-05 - Data updated: 2026-06-10 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/knock-unlock-your-mac-without-a-password-using-your-iphone-and-apple-watch/id692929970/reviews.md ## What is Knock? 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 help@knocktounlock.com and we'll get back to you within a day. ## Key features - Unlock Mac with iPhone - Unlock Mac with Apple Watch - Double-knock to unlock - Secure Bluetooth Low Energy - Pocket unlocking ## Recent user reviews (10 of 278) All indexed reviews: https://appshunter.io/ios/app/knock-unlock-your-mac-without-a-password-using-your-iphone-and-apple-watch/id692929970/reviews.md ### 1/5 — Doesn’t work *2021-04-23, version 2.0.2* I’ve installed this twice. It works once. Then never again. ### 1/5 — Could you update please? *2020-07-28, version 2.0.2* 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. ### 1/5 — Doesn’t work for me *2020-04-14, version 2.0.2* 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 ### 1/5 — Cash grab app *2020-02-10, version 2.0.2* 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. ### 1/5 — Doesn’t work *2020-01-23, version 2.0.2* Used to be a cool app but hasn’t worked for years since they stopped updating it. Super lame. ### 1/5 — Don’t buy ? *2020-01-14* Don’t buy this app if you have newer Apple devices, since it has not been updated since 4 years ### 1/5 — Doesn’t actually work *2019-08-23, version 2.0.2* It’s a simple idea but could install and setup. Getting the phone and mac to connect was hard enough - which is still as they are both Apple’s - and 1 in 10 goes, Knock sees the other end and starts. Look as if it may work then - Blam! Stuck after password entry. Help on their site suggests fixes but nothing worked for me. Waste of money. ### 1/5 — No longer works *2019-06-06, version 2.0.2* No longer works on the updated software ### 1/5 — Lock your iPhone *2019-04-16, version 2.0.2* Ok, how do I lock my iphone? I cant get past this screen to install. Really poor app so far. ### 3/5 — Useful *2019-02-03, version 2.0.2* Great application, but it could do with an update that goes with the latest iPhones UI instead of it looking outdated and not polished enough. ## Frequently asked questions about Knock ### 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. ## Version history (last 5 releases) ### 2.0.2 — 2015-06-08 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. ### 2.0.1 — 2015-05-18 Bug fixes, people! Knock 2.0 had some bugs, and we are fixing them! For the nitty gritty details, read on… - Improved notification copy to make it more obvious that you can slide to the left to unlock your Mac right from the lock screen. - Fixed a bug that could allow you to unlock your Mac by Knocking even when Touch to Unlock is enabled. - Fixed a bug where Knock could show your Mac as locked when your Mac requests your admin password. - Fixed a bug that could cause Knock for Apple Watch to incorrectly whether your Mac is unlocked or not. - Fixed a bug where Knock for Apple Watch could show the wrong desktop picture for your Mac. ### 2.0 — 2015-04-22 Introducing Knock 2.0: unlocking your Mac is now faster and more secure than ever. - Knock and Apple Watch: a match made in heaven. Now you can lock and unlock your Mac from your wrist using your Apple Watch! - Want extra security? Turn on Touch to Unlock to require Touch ID on your iPhone – or a tap on the Apple Watch on your wrist – to unlock your Mac. It’s all the security of two-factor authentication, but all the convenience of Knock. - Admin Password Support. Now you can use Knock to install software, unlock System Preferences and more. - Improvements to Knock's connection speed and stability ### 1.1 — 2014-12-07 - iPhone 6 and 6 Plus compatibility - You can now lock your Mac with Knock. Just tap on your computer in the app, and it locks! - Fixed a bug that could cause Knock to crash and become unresponsive - Knock is now better at detecting knocks when it is lying flat - Fixed a bug that could cause Knock to never get beyond the Bluetooth permission screen on iOS 8 - Reliability improvements ### 1.0.3 — 2013-12-24 - New app icon - Knock shows which Mac and account you are paired with - Fixed an issue that could cause Knock to never pair ## Apps similar to Knock | App | Rating | Price | Category | | --- | --- | --- | --- | | [Tragar Home Services](https://appshunter.io/ios/app/tragar-home-services/id1472776668) | — | Free | Utilities | | [Time Announcer Pro](https://appshunter.io/ios/app/time-announcer-pro/id981083690) | 1.0 (2) | $0.99 | Utilities | | [Plusly Calculator](https://appshunter.io/ios/app/plusly-calculator/id1576071621) | 5.0 (1) | Free | Utilities | | [Smartscape Irrigation](https://appshunter.io/ios/app/smartscape-irrigation/id1558140184) | — | Free | Utilities | | [TimeLock Safe](https://appshunter.io/ios/app/timelock-safe/id750852890) | 3.1 (7) | $2.99 | Utilities | | [iPalettes - Color palettes](https://appshunter.io/ios/app/ipalettes-color-palettes/id1250728535) | 4.5 (42) | $5.99 | Utilities | ## Related topics [knock knock lifestyle solutions ltd](https://appshunter.io/ios/topics/knock-knock-lifestyle-solutions-ltd) · [mac check by nbcrna](https://appshunter.io/ios/topics/mac-check-by-nbcrna) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*