Notational Acceleration is an ultra-efficient Simplenote-syncing cloud-backed tablet-capable note-taking powerhouse. It does nothing but make sure you have the notes you need, when you need them.
NA is a spiritual derivative of Notational Velocity on the Mac or ResophNotes for Windows and, when you enable Simplenote syncing, it syncs with both. Its point is to put as little as possible in between you and your notes. There is no saving, the notes just automagically get synced to the cloud, so they are always current. There is tablet support for both 7" Galaxy Tabs or Nook Colors and Honeycomb workhorses.