极连 is a free utility and tools application available for iPhone users. Developed by Beijing Qihoo Technology Co Ltd, this app allows users to easily transfer and sync files between multiple devices such as smartphones, computers, and tablets. Whether it's backing up photos, files, videos, music, or other file formats, 极连 provides a seamless and efficient transfer experience.

One of the key features of 极连 is its ability to connect devices without the need for login credentials. Users can simply scan the QR code on the target device to establish a connection. This eliminates the hassle of remembering usernames and passwords.

The app also supports batch file transfers, allowing users to transfer up to 100 files at once. Managing these files is made easy with the single group management feature. Additionally, 极连 ensures that files are transferred without compression, maintaining their original quality and security.

With 极连, users can enjoy high-speed file transfers as there are no speed restrictions during the process. Whether it's within a local network or over a wide area network, the app supports multiple channels for fast and efficient transfers.

If you are satisfied with 极连, the developers would appreciate your rating and support. For privacy policy and service agreements, please refer to the provided links. If you have any feedback, suggestions, or encounter any major bugs, you can reach out to the developer through the user feedback section or via email at