We automatically save your work every time you move to a new screen, in case you lose your connection.
You can also go to the menu icon in the upper-left corner and then select Sign Out.
When you sign out, we automatically save your work to our secure servers so you can continue where you left off when you sign back in.
Source:https://ttlc.intuit.com/questions/3858097-how-do-i-save-my-work-in-the-mobile-app
