drip

bloodyhealth.gitlab.io

An open source cycle tracker from the Berlin collective Bloody Health, published under a free licence and distributed through F-Droid and Google Play. drip implements the symptothermal method: temperature, cervical mucus and cervix observations feed rule based logic that returns a fertility status the user can trace step by step. The database stays on the phone, can be protected with a password and exported as a file nobody else holds.

Made for two kinds of people: those who want to read the code that judges their fertility, and those who study fertility awareness properly. It demands effort in return. The method has to be learned, the interface is spartan, and the project moves at the pace volunteers can manage.