If there was a text showing me when the last sync was, that would solve my problem. I want to switch from my mobile to PC, and I want to make sure everything is synchronized, so I can continue without my phone. If there was a text saying "last synced 2 minutes ago", that would also solve my problem, because most of the times I press the sync button, it was already done and nothing actually happens.
(One time, I added a task on my phone, and changed a few things. At the same time, there were unsynced changes on my PC as well. When both my PC and mobile synced, I lost the changes I'd made on my phone. Since then, I try to make sure everything is synced before I switch devices.)