Repetitive patterns. Having 26 letters available, it was the same exact groupings four out of five times;
A checkbox system for characters including prosigns;
The WPM slider is very sensitive, although I've not had any problems with the frequency slider;
It would be nice to be able to select the number (or time) of practice groups, should one wish either more or less than the 20 groups.
For myself, getting back into CW after a 30 year break, this is a very handy app. I think it could be a "good" app instead of just "good enough" if some changes were made. The lack of true randomness is the worst part, in my opinion.
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D.QN
Waslookingatthis
Bumper314