I simply make my own excel spreadsheets for each snake. I like to have hard copies, so I have a binder and each snake has a section with all of their records in it. My spreadsheets are customized to fit all the info I like to keep track of - weight, feeding details, fecal, urates, blue/shed, and notes where I just write any special details from that day. I tried using iherp and I have tub tags with QR codes for each snake, but it just doesn't work for me. I like writing out all my info and being able to easily flip back and forth. With so many snakes, writing things by hand forces me to pay more attention to their feeding and weight patterns as well.

That's just how I like it