1Password 4 is one of our absolute favorite security apps, and for a limited time the developer Agilebits is putting the iOS version of the app on sale with a massive 55% price reduction. The app, which usually runs for $17.99 can now be had for just $7.99.
The sale is in part to help those folks still using 1Password 3 make the transition, since the Dropbox API used in this older version will be retired on September 1. If you're running a device pre-iOS 6, then sadly you're out of luck and you'll need to follow alternatives steps outlined by Agilebits in order to keep 1Password sync in operation. But, if you're on iOS 6 and above, we can't recommend upgrading highly enough.