About

4sync is a proprietary, paid file synchronization and storage service, originating from the United States, that enables users to streamline and store various file types, including photos, music, videos, and documents, making them accessible and synchronized across a wide range of devices. Its comprehensive product portfolio supports platforms such as Mac, Windows, Linux, Android, iPhone, Symbian S60, Blackberry, and iPad, offering features like file storage, file sync, unlimited bandwidth, multiple language support, and the ability for users to suggest and vote on features. Operating in the competitive file sharing market, where it faces rivals like Dropbox, 4sync has garnered criticism from users regarding its practices, specifically reports of accounts being converted to 'free-premium-trial' with threats of data deletion if not upgraded, and complaints about slow performance during loading and file uploads on Windows. The company maintains a social media presence on Facebook and Twitter.