iCloud syncs all my contacts, calendar and memos across my Mac, iPad and iPhone 5. Any change I make on any device appears within seconds on all the others. On those rare occasions I log in to iCloud on the web, my changes are visible there as well. Then there is the whole photostream experience. All my photos are on all my devices within seconds. When I'm at an event, I can create a shared public photostream on the fly and email the link to friends who can see the photos I'm shooting within seconds of my decision to share them. Then there's the whole seamless migration from device to device. I remember how seamless it was going from one Palm device to the next... until NVFS came along and I found myself in posession of a device that would auto-hard-reset itself. No problem with my iThings. My iPhone 5 had the same personality as my iPhone 4 within about 45 minutes of logging in. Automatic redownloading several gig of apps takes time. The same was true of my iPad mini. It had the same personality as my iPad 1 within about an hour, once again allowing for automatic app redownload. PIM data migration was almost instantaneous. Lastly there are preferences that I've gotten used to having to set up over again on new devices. Things like wifi settings. It turns out my iPad mini knows all the wifi passwords my iPad 1 knew. Talk about time savings! To describe what iCloud means to me in a short phrase, I'd say it's what wifi sync was for my TX but it's a lot more powerful. And yes there is a wifi iTunes sync option for those who refuse to participate in iCloud. I really dislike iTunes so I ignore the possibility of using it... even though an iTunes restore is the only way I know to carrier unlock an iPhone. I'd rather not bother. I hope they figure out a way to do carrier unlock using iCloud, otherwise when I sell off my iThings they will still be locked to At&t. I have friends who use google apps with their android devices. Don't get me wrong. I have a google apps account, but I'm not willing to let my personal data spill onto my work-issued Android phone so I can't directly tinker with Android sync capabilities. But I've heard they are very similar to Android with calendar, contacts and memos synced across devices. I use Mac computers so my contacts live in "Address.app", my calendar lives in "iCal.app" and my notes live (somewhat awkwardly) in "Mail.app". So if you're looking for a single app to rule them all, the closest thing is google apps through any browser. The distinction between a native app and a browser app is starting to disappear now that html5 allows browser apps to look and behave similar to their native equivalents. I do own Pocket Informant to allow me to make my iThings look more like my Palm things once looked but I haven't even launched the software more than once or twice in over a year now. I'm now used to the way things look in iOS. I miss those guys as well. . It was my unstable TX that made me become an expert in all things backup, including nvbackup, backupman and a half dozen others. The ability to quickly restore from SD card saved my data more than once.