智信互联 is a free iPhone app developed by 21Vianet Group Inc. It falls under the category of Utilities & Tools and aims to accelerate office workflows and improve productivity.

With 智信互联, users can streamline their office tasks and enhance collaboration among team members. The app offers a range of features to facilitate efficient communication and document management. It allows users to create and edit documents, share files with colleagues, and collaborate on projects in real-time.

Additionally, 智信互联 provides a secure and reliable platform for team communication. Users can chat with colleagues, create group chats, and even conduct video conferences. The app also supports task management, enabling users to assign and track tasks within their team.

Overall, 智信互联 is a valuable tool for professionals looking to optimize their office workflows and enhance productivity. Its intuitive interface, coupled with its robust features, makes it a must-have app for efficient teamwork.