Cards that need to be synced are depicted with an icon of arrows pointing in a circle. Once the feature is working on iOS, if you don’t have a connection, you can still add new cards and associated details, and you can move cards around on boards.
The people at Trello have wanted to make that possible in a way that’s simple - and that wasn’t necessarily easy to do. Plenty of other mobile apps work offline.
“Your work will automatically sync when you are back online.” “Whether you’re home, on a plane, in a tunnel or in the middle of nowhere, you can use Trello without worrying if you’re connected,” Trello wrote in its iOS release notes. Now, the feature is available for all users. In 2015, the company had an early implementation, and midway through 2016 it was offering something more sophisticated in beta versions of Trello for Android and iOS. I’ve been asking Trello for offline support since 2014.
