Crowdfire is an extremely powerful product to get more targeted engagement and followers on Twitter and Instagram. Follow the followers of your competitors/similar accounts and watch yourself gain followers who are actually interested in your updates. Search prospective tweets by location and keyword. Fantastic tools for local businesses. Another great feature of Crowdfire is the ability to tell you who unfollowed you and users who are inactive (features that Twitter and Instagram do not inherently have). Crowdfire is available the web and has a powerful Android and Apple app.