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Lockdown is a Mac security application built from the popular iAlertU. With a new interface, splash screen, and icon, Lockdown makes securing your Mac while you step away even easier than ever.

What's New

Version 1.0.6:
  • Splash screen now fades away after 60 seconds
  • Fixed issue with setting Lockdown's "Motion Sensitivity" to high. Important: If you are experiencing problems with Lockdown's alarm triggering too easily, you'll need to drag the slider at least one tick mark away from its current location. Afterwards, you can then drag it back to wherever you'd like.
  • Added more documentation to Lockdown's interface


  • Mac OS X 10.5 or later
  • iSight Camera
  • Apple Remote
  • Configured Mail E-mail Account

*Previously available here

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Lockdown User Discussion

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Cowicide Member IconComment+1134

Developer site links broken. I guess this is abandonware? Hasn't been updated in many years either.

Reply0 replies
Version 1.0.6
PorkPieHat Member IconComment+0

This post is utterly useless. How does your app work? What the hell does it do? How is it different from all the others? Are you too stupid to include any useful information about your app, or is it just that it's not actually useful?

Waste of everyone's time.

Reply1 reply
Version 1.0.6

You are absolutely right: YOUR post IS utterly useless and a complete waste of everyone's time!

Try reading the description, MORON!

Aj'Son Member IconComment+0

Since I installed the update Lockdown 1.0.6 is not to activate by remote anymore.
Even if i switch the iSight option off.
No changes.
Truly sad...
Any hints beside waiting for a new update?

Reply0 replies
Version 1.0.6
Richard Crapia Member IconComment+8
Richard Crapia

used to work grate on leopard but snow leopard dosnt work
needs an update
all i have to do is do the waiting game now

Reply0 replies
Version 1.0.6
markked Member IconComment+0

Im using Snow Leopard.
iSight feature activated.

When I Lockdown my system, and attempt to activate the alarm, it works perfectly till after it takes the iSight picture to store. I notice after the picture is taken (green indicator goes off), the alarm stops and the program fails and is no longer in the toolbar (basically crashes).

But with the iSight feature turned off, the alarm works fine when activated and disarms fine inputting the correct password and the LockDown app still active and ready in the menu bar.

Reply0 replies
Version 1.0.6
Aikousha Member IconComment+256

Sounded interesting, until I got to the requirement of 10.5.
Sadly, it's this kind of restrictiveness in a lot of programming that really makes my work on other platforms seem so much friendlier, even in windoze (shudder).

Reply5 replies
Version 1.0.5

I sympathize with your frustration, but this comment sounds baiting (stuff like this makes me prefer Windows). For free software, ease of development is a big deal. With each version of MacOS, Apple makes leaps in making free software easier to write. Developers don't do this out of spite, unlike the tone of this comment.


Forget Winbloze, I felt the same disappointment when I scrolled down, too (OSX 4.11).


And Leopard has been out for nearly a year now. How long do you want to keep supporting stragglers? Should programs not take advantage of new Leopard functionality and features to keep those not wanting to upgrade happy? Upgrade or stick to using old software... can't have your cake and eat it too. It's not like Leopard has been out for a day and EVERYTHING now requires it. You haven't been left out in the cold in a matter of days like you like to play up...

Progress is called progress for a reason. Stick to using iAlertU. Last I checked, it supports Tiger just fine.

This flame bait has not place here.


While the original post was obviously a troll, there are many of us who have Macs which can not run 10.5. I have one such computer (PowerMac G4 Dual-533). Also, there are those of us who have a computer that can run 10.5, but have not updated yet. I have one such computer (iMac G4 1.0 GHz.) I have 10.5 on my MacBook at work, and while it is very nice, at home I'm not sure it's worth buying at full price. 10.4 still works great for me. I'd rather wait for 10.5 to become bargain basement priced once 10.6 is out. I use to be of the ilk that as soon as an OS update was released I bought it, but I'm no longer like that. In fact I was planning to skip 10.5 altogether and wait for 10.6, to save money and get a bigger upgrade versus 10.4, but now that 10.6 is no longer going to supporting PowerPC, I'm stuck with 10.5. Just not yet.


Stragglers? New functionality? Yup, I just love buying new hardware and software every six months and trashing thousand of dollars of hardware every year. Yup, I guess that's the whole reason for owning a computer...

I want the developer to know there is interest, but that it has to stay as only an "interest," unless it can work with "antiquated" 12 month old systems.

Sorry, but Leopard has removed nearly 5 times the functionality that it supposedly added, and Tiger did the same, but not as bad, even though it's upgrade prevents nearly $50,000 worth of professional equipment from working with the computer, that will never be upgraded itself... I'd call that waste, not progress. However, ALL the windoze software we have works from 95 all the way to XP without issue in any direction, and I find that sad.

I understand that upgrading is the neatest thing for some people and applications. But it isn't necessary for most of the things we end up testing, reviewing and using,, both here and for other places.

I use my Mac primarily for work, and all the Macs at work are used ONLY for work, however, 2 cannot be upgraded to Tiger because of loss of functionality, and the whole company cannot upgrade to Leopard for the same reason.

If admin feels this is a "troll," please feel free to remove it and the other comments, but the original intent was serious.

sjj_public Member IconComment+6

Nice idea, but it doesn't support multiple monitors. Well, it functions OK, but the other screen is not blanked out. You see your desktop and files. Also I'd like the option of turning off the audible alarm, or at least of making it much shorter than 10 seconds.

Reply0 replies
Version 1.0.4
Peter da Silva Member IconComment+94
Peter da Silva

Like to try it and see what the improvements are... but iAlertU works on 10.4 and Lockdown doesn't.

Reply1 reply
Version 1.0.4

Lots of developers seem to be taking the path of least resistance and making little or no effort to make their stuff backward compatible. It's a shame, in a lot of cases there's barely any reason at all. I don't know if that's true for this one though. I've seen an application that generates white noise being 10.5 only - there's no excuse for that.

Mac-Devil Member IconReview+6

One word: GREAT!

Reply0 replies
Version 1.0.4
Ranger Member IconComment+2

Great Programme and a great service of the developer. My co workers hate it allready. Got them twice lol. Ray

Reply0 replies
Version 1.0.3
There are no Ratings for this App yet.
> 5 2


Current Version (1.x)


Downloads 18,504
Version Downloads 13,149
License Free
Date 05 Sep 2008
Platform OS X / PPC 32 / Intel 32
Price Free