I’m sure there’s an obvious solution, but I can’t see if I’ve achieved my daily target on the iOS app, and log onto the website to check. Can you assist? Thanks. (Just found it!)
I have the same question, and still can’t find it. I use the website to check if I’m already done for the day 
Upper left (next to course name) is a down arrow at the left-hand side, Tap it. All your courses are listed there.
Go into a course. You have the Memrise avatar of the left. To the right is a rocket symbol with a number below it. If you have done your day’s target, a full golden circle will surround the rocket. If not, the circle will be partial.
Let me know if you’re still stuck.