Atelopus-zeteki

I hadn’t seen this comment, thanks for making it.

FOSS Period Tracking Apps Exist: (there may be others, as well)

https://fossdroid.com/a/bluemoon.html

https://fossdroid.com/a/mensinator.html

https://github.com/TotallyMonica/foss-period-tracker

Also paper and pencil.

Also the oldest known “writing” is a stick with 28 notches on it.

Santacon.info - gotta be in Jolly good shape for SantaCon!!