The thing I don't like about Herper Pro is the fact if you get the cell phone version that works with the program itself then you have to pay if you have over 50 snakes. It's a yearly fee as well. I just don't agree with this in a way because you've already bought the program. I also find that Herper pro has way too much stuff on the front that renders the program useless. I wouldn't even use 70% of the features it has. The program isn't free, but you can use a trial version.
I find cards to be the best for me because it's simple with what I use and it doesn't have all this extra stuff that I don't want to see, but that's my preference.