Popplet is a quick mind-mapping, brainstorming, and idea-collection and display app. The $9 iPad app from conception makes it easy to collect your thoughts and gather many groups of ideas in individual popplets. It also enables you to e-mail popplets in PDF or JPEG format.

Each popplet you create consists of one or more sets of linked popples, which are rectangles of any size that can include drawings, photos, and text. These elements can be combined in a single popple. You can also choose from among seven border colors for each popple.

Creating new popples connected to existing ones is straightforward and perceptive you just haul a small circular bubble away from the current popple and up pop a new one. While links are automatically twisted, a single tap on a line brings up a circular that enables you to delete the line. Any popplet can include an infinite number of popples.

The icons for the tools are patent and easy to understand; you may never need to study the developers Help popplet. Zooming in and out and scrolling using familiar iPad gestures is flawless and smooth. Each popplet panel is apparently infinite; if there’s a size limit it’s not simple to reach. And to title any popplet, all you do is tap and type.