A new app for the BlackBerry Storm has been released by the makers of such apps as Fart Storm, Marble Solitaire Puzzle and Bubble Blast. The new application for the BlackBerry Storm is called Tip Calculator reports CrackBerry who has 20 free copies to win simply by leaving a comment.

Tip Calculator for the BlackBerry Storm features include…split a tip between 1 and 20 parties, multiple rounding options, suggested gratuity screen to help decide what amount to tip, auto-store last settings, and easily pick a tip amount.

Tip Calculator for the BlackBerry Storm is on sale for $2.99 until the 31st of May after which it will cost $3.99.