generally, i have a card under or by the cages, and i mark down when i feed them - size of prey - if they ate or refused.
and then sheds, cause i never catch the date they go blue,
and weights when i randomly weigh them - the bps that is... none of the other snakes stay on the scale...
when i fill the card, enter the info in an excel sheet...
specific programs take to long for me...