Sync refers to synchronization. With sync, all your Watchlist from different devices and browsers under one Distill account will be synced. You no longer need to worry about data loss as your Watchlist is safely saved to Distill cloud. You can access your Watchlist anytime from the web at https://distill.io/inbox.
When sync is on, you will be able to see all your monitored pages along with their running device's name. Sync is different from “run”. “Run” refers that the monitor is being “checked for changes”. “Sync” means monitor's data will be synced, like, its history, data value, date etc. When a monitor is running in Chrome and is synced, the data of that monitor is viewable on Web/Android/Browser App though it is still running on Chrome.
Following is an image which shows a synced Watchlist with monitors running on different devices:
You can change the running device of any monitor by clicking the device icon and choosing from the synced device list.
Sync is a premium feature available in Basic, Pro and Flexi plan. To enable it, you have to sign-in to your Distill account. From browser extension, click on Settings → General → Check Sync items across devices.
When a change is detected in a synced monitor on a device, it make take a little time to sync the new data and be available through other synced devices.