Did you know that you can set custom vibration alerts for each of your contacts? (cultofmac.com)
She was also able to create custom vibration patterns of 3 to 4 elements for each app. (tomsguide.com)
If you upgrade to the Pro version for a fairly reasonable price ($ 2.60 for E.U. residents and $ 2.99 for U.S. residents), you will have access to themes, setting custom vibration levels, more hardware button support (provided your phone has those buttons), and blacklist remapping buttons while within certain applications. (xda-developers.com)