Laplink Sync 7 - 4 PCs [Download] A simple, user-friendly interface for quick and easy synchronization in just three clicks Compatibility with the most popular devices including: Windows, Android, Mac OSX and Apple iOS - PURCHASE REQUIRED FOR EACH DEVICE UltraSync technology that detects which files have been changed, added, or deleted, providing the fastest synchronization possible. Reduced security risks, connection issues, and bandwidth congestion with peer-to-peer connectivity.