Hiragana and Katakana quiz survey

I have decided that it my hiragana and katakana quiz are in need of some attention, but I don’t know where to start. What better way than a little survey? Do you think that it keeps asking you the same character over and over again (even though you have selected lots of rows) or perhaps it should realise that you have learnt a specific character and that there is no point asking you it again (not today anyway)? I am sure that the following choices don’t cover all cases so please leave a comment instead.

Thank you!

How can this quiz be improved?
it is not easy to use;
it is too slow;
it keeps asking the same questions;
It should test me with real words;
It shouldn't ask me things that I already know;
It should allow me to check my progress when I keep using it;
Something else…
  
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