Go to account (top right corner), choose to export your key, then import it into a wallet.
Do you mean "sweep wallet"? This is not what I was planning. I like to leave some coins here. What wallet software should I use? Coinomy only has sweep option.
I'm sorry I can't give you a good wallet recommendation for this, I haven't done it myself and was just showing where in the memo UI you can export your keys.
