I’ve searched around a bit and am not able to find if there is a character limit to individual cards. As I write a lot for long periods of time, I’m just looking to see if there’s a cap. Great App by the way, it’s been very helpful.
I, too, would like to know if there is a limit to the number of characters in a card.
I don’t know if you still want to know what the character limit for individual cards is, but I did a cut-and-paste test and was able to enter over 140,000 characters into one card with no problems. I can’t imagine anyone wanting to enter any amount even close to that, which would defeat the whole purpose of a great software like GingkoApp. So, I would assume that the answer to your question is that there seems to be no practical limit to the card text amount.