Shameless plug if you want to practice your hexidecimal math
<a href="https://matt-savvy.github.io/hex_math/" rel="nofollow">https://matt-savvy.github.io/hex_math/</a>
I’m curious about this but the free strategies are the least interesting. And so I dropped off there.<p>If you’re making money off the practice problems, why even gate the strategies?<p>Just a thought.
Love the site design though!
A while back, I made something similar to this site's 'practice app', but bare bones:<p><a href="https://math.twilam.com/" rel="nofollow">https://math.twilam.com/</a><p>Just practice. No strategies. No config options. You just answer a set number of problems and you're done for the day. At the end of each session, you're told how long your daily streak is. No streak freezes. No login.<p>My target audience is my 7yo son.