Password Protect Apps on Mac: Lock iMessage and Others

Peter William
May 17, 2022 Preview 67.6K Preview 7
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How to lock iMessage on Mac with password? This article will use Mac Messages app as an example and walk you through how to easily password protect apps on Mac.

Whether you use your iMac, MacBook Air or MacBook Pro for personal or work use, there are apps that you don’t want others to access. Messages - through which you access iMessage on Mac - is one of them. By putting a password on certain apps, you can effectively keep prying eyes out of them and protect your privacy.


How to password protect iMessage and other apps on Mac

How to lock apps on MacBook Air, MacBook Pro and other Mac computers easily with password? This part will walk you through the entire process of putting a password on iMessage on Mac. The tool used is Cisdem AppCrypt, an app locker and website blocker.

Steps: How to lock Messages on MacBook, iMac, etc.

1. Download and install this Mac app locker.

Free Download

2. When you open it for the first time, set a password when asked.

a message asking first time users to set a password

3. Click the icon in the menu bar. Choose Open Main Window.

clicking the icon in the menu bar brings the Open Main Window option

4. Enter the password. Now you are in the main window. Under the App Lock tab, click the plus icon .

the App Lock tab located in the top left corner of the main window

5. To lock iMessage on Mac, select the Messages app and click Open.

password protect iMessage on Mac

Now the iMessage app is locked by password. People with access to your Mac can’t access the app and messages in it. It’s that easy and effective. You can follow the steps to lock any other built-in apps or third-party apps on your Mac, individually or in bulk. In the fifth step, you can select multiple apps to lock.

When you or anyone else tries to open the locked iMessage app, a window will show up asking for password. No password? No access.

requiring password to open locked iMessage app

If someone tries to launch an app protected by AppCrypt and enters a wrong password, the app won’t open. The tool will also record the failed attempt with time and date and take a photo of the person who tries to break in.

record failed attempts to open password protected apps

Entering the correct password will unlock a locked app. To remove the lock from an app, select the app and press the delete key.


Enable the Auto Lock There is a feature to automatically relock an unlocked app after it’s not active for several minutes or after you leave your Mac for several minutes. You can turn on this feature in AppCrypt Preferences. By the way, it’s recommended to turn on “Launch at system startup”.

the Preferences window displaying the auto lock feature

How to quit the app locker To quit AppCrypt, you need to click its icon in the top menu bar, click Quit and then enter the password. This can prevent others from bypassing the locking by quitting/uninstalling this tool. This way, your iMessage and other apps can be effectively protected.

clicking the top menu bar brings the Quit option

Lock apps at certain times You lock Messages with password to protect privacy. You may also want to lock game apps to prevent yourself or your child from spending too much time on them. If so, you can use the Schedule feature. Select an app and click the clock icon that appears. Enable Custom Schedule and click Add Schedule.

the schedule feature provides a set of settings for locked apps

Free Download

Note: When you choose to lock iMessage and other Mac apps with password, it’s crucial to select a strong password. If the password is weak or easy to guess, other people may easily figure it out and successfully open a locked app. If so, your efforts to protect privacy will go in vain. It’s not enough to just set a complex password. It’s equally important to always remember it correctly.

Bonus tips to help better protect iMessage on Mac

How to prevent access to Messages by locking the screen of your Mac

To keep the iMessage messages and other information on your Mac private and secure when you are away, you can lock the screen. There are two things that you can do.

Before you leave your Mac, go to the Apple menu and choose the Lock Screen option.

Also, set your Mac to require a password when it wakes from sleep.

1. Go to System Preferences.

2. Choose Security & Privacy.

3. Under the General tab, select the checkbox next to the Require password option and choose a period of time such as immediately or 1 minute.

the General tab

This way, your Mac is locked and protected, so are the Messages app and all other stuffs on your Mac.

If locking Mac’s screen isn’t practical to you, the best solution is to lock the Messages app.

How to stop iMessage on Mac from popping up

You choose to password protect iMessage on Mac for the sake of privacy. Once apps are password protected on Mac, other people won’t be able to open them or access the content within. It’s a good decision to take.

Another way to stop the exposure of privacy is to stop notifications. Notifications are a great way to always keep you informed. However, imagine that an embarrassing iMessage notification pops up when you are giving an important presentation or sharing screen during an online meeting. How to prevent iMessage from popping up on Mac? Follow the steps below.

1. On your Mac, open System Preferences through the Apple Menu, Launchpad or Spotlight, etc.

2. Click Notifications.

click notifications in system preferences

3. Scroll down until you find Messages. Select it.

4. Under the Messages alert style section, choose None.

choose none

From now on, nothing will pop up when you receive messages. You can easily get notifications back at any time if you want to.

How to lock Messages on iPhone

Devices with iOS 12 or later come with a solution to lock apps. The Screen Time feature can be used to restrict access to individual apps (such as Message and Snapchat) or a whole category (such as Entertainment) of apps with passcode.

It’s also possible to lock apps with built-in features like Guided Access or third-party apps. If an app supports Touch ID or Face ID, it can also be protected with fingerprint or facial recognition. To find out more, check out this guide.


Can you put a password on iMessage on Mac? Yes. It’s also easy to password protect any other apps on a Mac computer. Tools like AppCrypt can help you effectively prevent other people from opening your apps when you are away from your Mac or lend it to others. Of course, you can set login password to completely block access to your computer, but it’s not applicable to some situations.

Check out the detailed guides to password locking other specific Mac apps.









Peter William
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Peter has always had great enthusiasm for writing, programming and web development. He likes writing about software and technology, his works are featured on some tech blogs or forums like Tom's Hardware, CNET, etc.

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Comments (7) Leave a Reply

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  • Random Michael

    From what you write, AppCrypt seems a great app to lock apps. I'm also interested in the site blocking feature. I'll definitely try it out.

    2 years ago commonReply

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  • Timothy

    I like this app very much. Now I can feel free to lend my Mac to friends. It is a trustworthy app , using it from a quite long time.

    7 years ago commonReply

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  • Bers Khamitov

    Hi Rosa, I am quite interested in this program. But I have a question: How does it keep records of the failed attempts?

    7 years ago commonReply

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    • Rosa Reyes

      When someone tries to access your password protected application, AppCrypt will ask he or she to enter a password. If the password is wrong, system will keep a record automatically with photo, time and reason.

      7 years ago
  • Kelsey

    I know there are some paid apps can add password protection to individual applications, but are there any free ways to do that?

    8 years ago commonReply

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    • Rosa Reyes

      As far as I know, there are no free ways to password protection individual applications. But you can use Mac's built-in Parental Control to set restriction on some apps.

      8 years ago
  • Wayne

    Password protecting individual applications is very helpful to protect my sensitive information from prying eyes. I love this app. Thanks for suggesting.

    8 years ago commonReply

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