Index Card allows users to organize their stories, articles or thoughts without adding a lot of unnecessary weight to the app. When I first tried Index Card about two months ago, I tried it against a number of other apps that contained similar index cards features. For the sheer act of organizing a story, which is why I originally downloaded the app, Index Card came out on top above other apps like, for example, Storyist. Storyist, while working great as a story writing app, didn’t offer some of the features in its index cards feature that the Index Cards app offered. And if you want to check out the app, now’s a good time — it’s on sale for $2 (from $5) till early tomorrow morning..