The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From Vass and Associates Inc:
ClickHook is a lead management system that helps you organize your leads in one place, collaborate with your team, generate reports. It is super easy to use unlike a lot of other lead management software platforms. You can set up your account first online and then use a combination of the web app with the mobile app. The web app naturally is a tad more robust, letting you do more things... the mobile app is meant to provide a simple way to manage your leads on the fly.