Springpad has just been updated for iOS 7, and it's more than just a cosmetic change. The new and improved app still lets you save just about anything - ideas, notes, tasks, movies, etc - but now it's easier than ever.
With the addition of Airdrop support, sharing with other users is a snap. Files viewed in other apps like Safari can now also be saved to Springpad using the "Open In..." option. All that, plus syncing is now faster thanks to iOS 7's multitasking feature. Of course the interface has also been redesigned to match that iOS 7 look, but the other improvements are incredibly handy.