Language exercise tracker

I don't like crazy tracking systems. I want something light, lean, and simple, focusing on a little bit of reflection. No awkward questions, but just a quick noting system where you should ask yourself what three little things you've learnt after every exercise.

You can put the date or adding a due date + reminders if you want to plan ahead, a quick title for the exercise, if you've done it or not (just to get a little bit of pleasure at ticking that box) and what kind of skill you're practicing.