Nice work, the Dropbox integration is probably a good idea (although I personally don't use Dropbox). One question though: is it not possible to click to the n

Nice work, the Dropbox integration is probably a good idea (although I personally don't use Dropbox). One question though: is it not possible to click to the next question, when you're reviewing? Does this require signing in? Coincidentally, I also recently used React to build a SRS site specifically targeted toward review of computer science topics. React definitely makes building UIs into a pleasure. (Now, if only there were an equally elegant, open-source solution for client-side data/models). By the way, you mention possibly moving to Mathjax. I tried out Mathjax before I ended up just switching to pre-rendered images generated from LaTeX. Now that I know about KaTeX, I'll probably switch to that instead of pre-rendered images. But trying to integrate Mathjax with React is a challenge, because of how Mathjax manipulates the DOM. It's doable, but even then I ran into performance issues and abandoned it in favor of pre-rendered images. KaTeX appears to have addressed both the React integration issues and the performance problems (not to mention the download size of the Mathjax libraries). At the moment, I've just released a basic flashcard version of the site without the SRS functionality [1]. (the SRS requires Firebase, and I haven't yet published that code) 1. http://esbullington.github.io/canonicalcards/ http://esbullington.github.io/canonicalcards/ (by the way, I'm actively looking for pull requests with additional questions on data structure, algorithms, and other topics from the core computer science curricula).