Gridded is a flashcard system for both iOS and OS X that includes a customizable spaced repetition system, powerful editing tools, cloud sync for users with multiple devices, and text-to-speech support for learning foreign languages. It includes thousands of built-in memorizable items to get you started. Each Gridded item consists of three fields: a prompt, a response, and notes. Each item can be included in any number of decks, and each deck can be included in any number of exportable, sharable bundles. Items and decks are also categorized by response type. Editing tools include the ability to merge items with the same prompt within a response type, the ability to split items with long prompts into multiple items, the ability to split large decks into multiple smaller decks, find and replace, case change, and the ability to switch around prompts, responses, and notes. Items can be added one-by-one or from lists, and can be exported in lists as well.