The only way to download the iOS application by Cisco is to use Apple App Store. Apple does not allow users to install applications to their iOS devices from another source. The app is called Cisco AnyConnect.
Cisco AnyConnect is a remote-access application for enterprise networks. The application transfers data to and from the user's device as if it was connected to the company's network. This allows the user to access information and tools that are only available to employees.
Cisco warns that companies may have different policies for mobile devices. As such, users may need to contact the network administrators of their companies to gain access to the network via AnyConnect.