I just started trying to learn these characters and this has been my favorite tool so far!

The very repetitious way of just flashing these characters at me is a really good way to learn, much better than staring at a chart

My only notes are moreso just feature requests rather than complains, so I'll list them here in case you were interested in working on this any more:

>Sometimes I find certain characters a bit difficult to learn, and then I will be flooded with a bunch of different ones before coming back to the ones I was having difficulty with. I think if there were some way to make the shuffle system come back to ones that you're having difficulty with a bit more often, it would help give me more opportunities to practice those ones

>On android, the keyboard is in the way of the text box, so I can't see what I'm typing as I type it

>It would be useful to see what the character you just got correct meant, as sometimes I've guessed, and guessed correctly, but as soon as the next character comes up, it leaves my brain

>The setting to play with or without a lookup table might be useful? Though I could see arguments either way, as it makes you have to commit a lot harder if you don't get that

But other than that, not much to like actually complain about for me at all! Thanks for the tool! Would love to see more learning in this rapid-fire style!