"Narrow helps you build a targeted audience and increase your influence on twitter. Enter relevant keywords or hashtags and we’ll begin building the right audience for you."
Narrow allows you to target Twitter users based on what they’re talking about. Enter a few keywords, phrases, hashtags or handles and begin instantly interacting with your target audience. Narrow does this by favoriting tweets and following the users that match your audience’s description.
Basic (1 account) - $9/mo
Pro (3 accounts) - $19/mo
Business (10 accounts) - $49/mo