(Appigo, $4.99)

Appigo has put a lot of work into its Todo for iPad app, and it truly shows. First off, they’ve sent up a dedicated website that syncs all information across both 3G and Wi-Fi models, complete with strong customer support and a 14-day trial to try everything out – including iCal and Outlook Sync. Also, with full iOS 4 support, it enables everything from live app badge updating to smart multitasking, all with a few taps on the screen. It also supports hi-res graphics, making it ideal for both the iPad and iPad 2, as well as the Retina Display-supporting iPhone 4. Todo goes even further with such options as passcode protection, reminder alerts, multiple binder and paper choices (including old-school notebook style) and printing options. The only downside? After the 14 day trial, you have to pay $19.99 for Todo Online – but that’s a small price to pay for the kind of functionality offered here.

Get It Together: Best Organizer Apps For iPad