Dynamic Signal is a free iPhone app developed by Dynamic Signal Inc. It is a business and productivity app that connects organizations with their employees. The app allows companies to reach every worker in real-time with personalized, relevant content they need, in the way they want and expect.

The app offers a range of features to facilitate communication between organizations and employees. These features include alerts and push notifications, broadcasts, posts, native video, and the ability to share approved content. However, it is important to note that to use this mobile application, you must have a Dynamic Signal account.

Overall, Dynamic Signal is a useful tool for businesses to communicate with their employees and ensure everyone is up-to-date with relevant information.