I am currently practicing in numbers level 4.
It would be nice if I could select, level 1, 2, or 3 and practice being successful rather than practicing to failure each time. I realize that I can use Custom to change my practice to anything that I like but it would be faster and a little nicer for my enthusiasm if I could work up and down the levels quickly to improve my confidence. In practice, I can grab the last 6 and/or first 6 numbers in working memory and leverage it to bring me to the next level without actually using my system. Other times, I just get lucky numbers that I can outperform with. Having gotten to the next level I’m stuck either continuing to leverage working memory or waiting until my skill catches up.
Unlocking the levels is great motivation but it would be nice if I could pick the ones I have already succeeded with using a dropdown box. To many failures seems to create a negative feedback in practice. The current approach ensures I get one success and many failures for each level.