We've been using Due for iOS for quite a while now (our review) It's exciting that there's finally a Mac version of Due available. It's just as useful as its mobile counterpart an offers wireless sync, rapid reminder creation and great looks. Plus, it's still a nag, which is exactly what I need. Here's a look at Due for Mac.
Due for Mac is quite good-looking, as you'd expect. The main window is small and unobtrusive by default, though you can resize it. Four icons line the top of the main window: view reminders, view timers, view logged reminders and create a new reminder. The pinstriped window is tidy and resembles Due for iPhone. When you create a new reminder or edit a timer, a pop-up window appears which also looks very nice.
Creating a reminder is simple. Click the new reminder button (or hit Command-N) to open the creation window. You can use natural language here, which is great. "April 10" works as well as "tomorrow" or "in four days." Also, "10:00 AM" works as well as "10am."
Also, you needn't tab into each field. You can simply type "Pick up mail at 2pm tomorrow" and everything will be filled in properly. The reminder is set as soon as you finish typing, so there's no "confirm" button to click.
Keyboard support is extensive. You can create reminders, hide the app, pull it up front again, reschedule things, mark them as done and so on without touching a mouse.
The snooze feature that I like on my iPhone has made it to Due for Mac. When a reminder's due date passes without being marked as done, the app will repeatedly remind you that it's still outstanding.
Of course, the cool new feature is cloud sync between Due for Mac and iOS. All of your reminders and timers can be synchronized via iCloud or Dropbox. In my testing, this works flawlessly. Reminders created on either device showed up on the other almost instantly. Also, marking a reminder as completed did the same thing. It's really nice to create errand-based tasks on my Mac and have them ready to go on my iPhone when I leave the house.
Finally, the customizable alert sounds are pretty cool. You can assign a longer or louder alert to an especially important task. That's also useful if you know you're going to be in a noisy setting when the reminder will sound.
At US$9.99 it's not a throw-away app. I think it's worth it for the cloud sync alone. Due for iOS has kept me on track many times, and now I'm glad to have my Mac in on the fun. I recommend checking it out.