An automatic synchronization method and apparatus that synchronizes data on a peer-to-peer basis across multiple devices. Automatic synchronization occurs on one or more similar user devices from one device to another and does not require synchronization with a central server. No single device acts as a central synchronization server, but all devices on which the application resides and that have the data to be synchronized can communicate with each other directly, or indirectly through other devices that have direct communication with the device on which data is changed.