It also only supports texts with simplified characters. I’ll eventually add support for traditional characters. The silver lining is that when you add a flashcard for a simplified character, you’ll also get a flashcard for the traditional character. It’ll be suspended by default so you’ll have to unsuspend if you want to study it.
This goal is difficult the way you put it. In Chinese, besides reduction in strokes, a number of traditional characters (of different or similar meanings but mostly pronounced the same) are converted into one simplified character. In other words, traditional character set has a n-to-1 relationship with simplified character set. For most characters this n=1, but you would also see n=2,3... quite often.
For this reason, you would often see articles awkwardly converted from simplified characters into traditional characters when it's done automatically. The other direction--traditional character to simplified character conversion--has no such problem.