If You're New Here, Welcome to Sister Moon
What if the changes you feel throughout your cycle aren't something to overcome, but invitations to listen more closely to yourself?
Sister Moon was created as a way to reconnect with the natural rhythms of the female body; and to notice the quiet initiations that shape us throughout a lifetime. From the monthly cycle to the larger seasons of womanhood, this is an invitation to slow down, listen inward, and become more fully yourself.
The Founder’s Story
The Infradian Rhythm Volvelle began as a personal question asked during early motherhood: What wisdom do I hope to pass on to my daughter? Inspired by the discovery of cycle awareness, lunar rhythms, and ancient feminine traditions, Christina Lukens spent five years developing a patent-pending paper instrument designed to help women reconnect with their cyclical nature. The Infradian Rhythm Volvelle transforms complex cycle education into a beautiful, tactile ritual; one that invites women to understand their rhythms, trust their bodies, and carry this wisdom forward for future generations.
The Things That Develop a Patina
Some objects become more beautiful with time. A cast iron pan, a worn journal, a linen cloth softened by years of use. They develop a patina…not just on their surface, but in the relationship they hold with the people who use them.
The Infradian Rhythm Volvelle was designed to be that kind of object. A physical tool that lives in your home, grows familiar in your hands, and becomes part of the rhythms of daily life. Here we explore what physical objects can hold that digital tools cannot: presence, ritual, shared understanding, and the quiet beauty of honoring your cycle in plain sight.
What Does a Cycle Tracking App Actually Cost You?
What is the true cost of a period tracking app? Beyond data collection lies a quieter exchange: your attention. Explore the hidden impact of digital cycle tracking and discover a slower, more intentional approach to cycle awareness through infradian rhythm tracking and embodied self-knowledge.
Discern What You Give Authority To
On technology, bodily wisdom, and the question nobody is asking loudly enough.

