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The award-winning Missing Sync for Windows Mobile is the most trusted sync software for Mac users with Windows Mobile smartphones like the HTC Touch, Motorola Q9 and Palm Treo Pro.

No complicated configurations.
In just a few easy steps, the Setup Assistant will have you ready to sync your Windows Mobile phone with your Mac. Quick and simple.

Ready. Sync. Go!
The Missing Sync for Windows Mobile gives you the choice of syncing via Bluetooth, USB or the network. Whether your device is from Palm, HTC, Samsung or Motorola, sync using the connection that works best for you.

Sync Entourage and more...

What's New

Version 4.0.5:
  • Snow Leopard compatibility.
  • Fixed Bluetooth sync connectivity for Mac OS X 10.6 Snow Leopard.
  • Fixed USB sync connectivity for Mac OS X 10.6 Snow Leopard.
  • Fixed hang when adding items to FileSync plugin settings.


Mac System Requirements:

  • G4 or faster processor
  • Mac OS X 10.4.9 or later
  • Syncing music requires iTunes 6.0 or later
  • Syncing photos requires iPhoto 5.0 or later

Windows Mobile Device Requirements

  • Window Mobile version 6
  • or Windows Mobile version 5
  • or Window Mobile 2003 or later
  • or Windows Mobile/PocketPC 2002

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Missing Sync for Windows Mobile User Discussion

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J.k.J Member IconReview+0

My OSⅩ 10.6.2 can't install

Reply0 replies
Version 4.0.5
Dteiram Member IconComment+0

Very difficult to work with. Unstable, typically cannot close this software because it stops responding.

Reply0 replies
Version 4.0.5
Luc Piguet Member IconComment-1
Luc Piguet

This application is unstable and crashes OSX.

Reply0 replies
Version 4.0.5
A_prompt Member IconComment+1

SyncMate is really nice. There's a free version of it, though of course it has less features, and by the way CD is not obligatory to buy, you can remove it on the purchase page.

Reply0 replies
Version 4.0.5
Brownhawk Member IconComment+0

Recently bought a Samsung Omnia and thought I could sync my calendar and contacts with the "missing sync". Prior to the purchase of the handset I had read about the "missing sync" and I was quite optimistic about it ,having read that this was an award winning software(?).
To my dismay I could not sync my device no matter what the help pages told me.
Fortunately I had used the demo version.
I then downloaded 'Syncmate" another application which worked very well.
Unfortunately "syncmate" is priced twice the "missing sync" because it is mandatory for the buyer to purchase the CD($19) along with the "software download"($39).

Reply0 replies
Version 4.0.5
technosorcerer Member IconReview+0

I never heard of Missing Sync before, but I'm glad I found it. Works like a charm with my Diamond. I mean it just worked - no problems. I just installed it, connected my Diamond, hit the sync button and it put all my contacts and schedule on my phone. Huge kudos for Missing Sync!

Reply0 replies
Version 4.0.4
kparvez Member IconComment+0

I love this program. I had bought a HP iPaq 210 in September and I couldn't install programs since I use a macbook. I had to borrow a friend's PC to install software. I wanted to download and install software via my macbook. At the time, I had downloaded Missing Sync v4.0.2 and it didn't work for me. I couldn't manage to get my iPaq to sync to my macbook.

Recently, I read somewhere if you turn off 'advanced network functionality' on your iPaq 210 device (via "Settings" and under "Connections" and under "USB to PC") it might help. So I clicked off that function. Then I downloaded Missing Sync v4.0.4 and lo and behold, I have Missing Sync working and connecting to my macbook. I also managed to install programs and update my itunes onto my windows mobile device. YAY!

I thought I'd pass on this good news to everyone who may have had issues in the past.

Reply0 replies
Version 4.0.4
wmac Member IconReview+3

Has anyone experienced the inability to synchronize calendar events and tasks between Entourage 2008 and a PC based cell phone?

After several emails with Mark Space support, I was able to confirm that contrary to their indication that you can sync calendar events and tasks with Entourage 2008 and your PC based cellular telephone, it cannot be done. And even more disappointing is that they refused to refund my purchase price even though I could not use the software as Mark Space indicated it could be used.

The explanation that I was given is that it is a problem with Entourage, but not with Missing Sync. But the problem with that explanation is that they said it would work and had they not said so, I would not have purchased Missing Sync.

As people have mentioned, Entourage actually syncs with iCal rather than directly with your PC based cellular telephone. Entourage sends and receives calendar events and tasks from a special Entourage calendar in iCal. The problem is that your PC based cellular telephone doesn't send information to the Entourage calendar in iCal. Thus, there is no way to sync information from your PC based cellular telephone to Entourage.

I also experience all the duplicates and failures that many others have mentioned but was able to work through all of those serious inconveniences. In fact, my MacBook Pro even began to freeze which had never happened prior to installing Missing Sync. The inability to sync information from my PC based cellular telephone to Entourage was the reason for purchasing Missing Sync and Mark Space clearly indicated I could do that so when it failed I thought they would have no problem refunding the money I paid. But to my surprise, they refused.

I eventually had to completely re-install Leopard, wiping out everything to get the problems to stop. I have now re-installed all of the software except Missing Sync and my MacBook has not frozen since.

Reply1 reply
Version 4.0.3

I'm currently running version 4.0.3(438) with my HTC Tilt and Mac Office 2008 without a problem, if I had any complaints it would be a doubling of my Entourage calendar events on my phone.

TheBattman Member IconReview+12

Downloaded and used for a couple of days as functional Demo. Worked very well.

I decided it was a much needed app, so I coughed up the $39.95 and received my registration info quite quickly.

After entering my registration info, I now have lost the ability to sync my contacts, and my calendar. I can't think of any more important plugins to work than these two.

Don't be surprised if you see this error:

SyncClient error. Can't register sync client.

I used the technical support submission form on the Mark/Space web site. When they say 24-48 hours, they mean it - it took nearly two days for a response that just mirrored the generic suggestions on their tech support page (reset iSync's sync history). That had not worked the several times I had already tried it (and had indicated in my support request).

I did find that Mark/Space "conveniently" has Premium Support where you can schedule and PAY FOR a support phone call.

I will be more than happy to update this review if/when my situation is resolved.

Reply1 reply
Version 4.0.3

Found the solution, with no help from Mark/Space. Found an old post via Google of a person with the same problem/error. His solution was to remove an apostrophe from his device name and make sure the full device name is shorter than 14 characters.

Niccolo_M Member IconComment+0

I was quite happy with Missing Sync f. Windows Mobile (MSWM) 3 under Tiger.

However, updating to Leopard required also an update to MSWM 4, but even the latest version (4.0.3) does not work at all, even in the most straightforward circumstance. The USB connection just never gets established. So I do not even get that far that I could start a sync. I seem not be the only one to whom this happens. Unfortunately there is no other software out there that can sync Windows Mobile 5 with a Mac - but MSWM is too unreliable to use it. If it fails even in the most simple circumstances, then the quality assurance must be really lousy. Syncing is usually required for data which are important and precious - therefore the level of quality and support provided by MSWM 4 is completely unacceptable.

Reply0 replies
Version 4.0.3
user icon+0
Version 4.0.5
> 3 50


Current Version (4.x)


Downloads 60,980
Version Downloads 18,393
License Demo
Date 02 Oct 2009
Platform OS X / PPC 32 / Intel 32
Price $39.95
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