Paperlabs has Tapfolio for Stocks (iTunes Link) for the iPad in the iTunes App Store for FREE for a limited time.

Tapfolio is truly optimized for iPad: swipe, pinch and zoom graphs with ease. Compare stocks with a single tap. Build and visualize your portfolio like never before. Easy and addictive – a great way to feel connected to your portfolio.

Tapfolio has been designed for interactivity and performance. It lets you directly manipulate your graphs, not hunt for buttons with artificial time limits like 5 days or 3 months. Compare two or more stocks over any arbitrary time period just by swiping your finger.

Use Tapfolio to track stock performance or track your portfolio. Setting up your portfolio is a snap: just tap on the graph to add transactions for that day. Tapfolio will even track your cost basis and accrued gains or losses in separate outlines on the graph.