Take heed, procrastinators: A new app rewards and punishes users based on how many items they check off on their to-do lists.

Promoted as "the world's first to-do list with a personality," Carrot aims to encourage productivity, but is more entertaining than motivating.

Each time users complete a task, they are rewarded with points, which they can later redeem for prizes (including gifts, compliments, jokes and quotes). In response, Carrot — represented on-screen by a blue dot — stays happy.

But when users fail to get things done — watch out. Carrot turns red, evoking the creepy aura of HAL 9000 from 2001: A Space Odyssey. As the description says on Apple's App Store: "You do not want to make Carrot upset."

For more details, check out the video, above; then, tell us in the comments: Would you use Carrot?

 SEE THE VIDEO ON MASHABLE.COM

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Image courtesy of YouTube, MeetCARROT