You can tell Scapple was designed by a writer. It's a simple, sparse Mac app that's free of unneeded bells and whistles. Scapple comes to us from the team at Literature & Latte, the developers who are responsible for the popular Scrivener word-processing and writer's management app.
While Scrivener is bursting with nearly every feature a writer could need, Scapple is simply a note-jotting app -- but it still keeps writers satisfied. Many have called Scapple mind-mapping software, but by L&L's own admittance, it's not. Instead, they liken it to a freeform text editor or "virtual paper" that allows a user to make notes anywhere on the page -- just like a writer would with his notepad as he furiously scribbles down ideas.
The way Scapple works is you double-click anywhere on a document and start writing. This can be something simple like the name of a character, or something longer, like a chapter's opening paragraph. Or it can be a note that has to do with anything your mind can think of and needs to get down quickly. You can double-click to create as many new notes as you wish in a single document and you can drag them around to any position on the page. And if that's all you want to do, that's fine.
But you can also link different notes together with dashed or arrowed lines. You do this by dropping one note on top of the other. All your notes can be connected, or only one can, or none; it's your choice. Notes also aren't limited to text. You can also drag in images and other external text files to your Scrapple document. And as you would expect with a good note-taking app, there are plenty of formatting options that let you change the appearance of your notes and Scrapple documents. Scapple also offers a number of export options.
If you're a writer, I think Scapple will immediately appeal to you. If you're a mind-mapping power user, it probably won't. Either way, Literature & Latte offers a demo version so users can try before they buy. If you want the full version of Scapple it's available for only US$14.99. Currently you can only buy it through Literature & Latte's web store, but the company says they have submitted the app to Apple, so you'll be able to find it in the Mac App Store soon.