Together for better cycle health

BodySeasons is the digital health journal for self-directed cycle tracking and professional support. We are looking for visionary partners, from coaches to health insurers, to make cycle health a lasting part of everyday life, the workplace, and medicine. Transparent, secure, and evidence-based.

As of 2026-07-24

This always applies

One principle always applies: Users decide which data they record and who they share it with. Employers, health insurers, and other organizations never receive individual health or tracking data.

The greatest opportunity lies between days of absence

8.9 daysestimated productivity loss per year from reduced performance while present, derived from self-reported symptoms and reductions in productivity.
80.7%reported presenteeism in the Dutch survey of 32,748 women aged 15 to 45.
67.7%wanted more flexibility in tasks or working hours during menstruation. This is an expressed preference, not a measured productivity effect.

These figures come from an internet-based cross-sectional survey using self-reports. They describe the starting point, not the specific effect of a BodySeasons pilot.

Why our approach makes a difference

Individual rather than prescriptiveBodySeasons does not prescribe who should do which task and when. Instead, the app helps users recognize their own physical patterns and plan their working day proactively with those patterns in mind.
Health literacy, not surveillanceThe goal is informed self-management, not surveillance. Individual cycle and symptom data remains under the user's control. It is not provided to employers or health insurers as performance or health data.
The BodySeasons coach dashboard with shared history data.
The real coach dashboard, with shared insights.

BodySeasons as part of your workplace health or prevention program

BodySeasons can be included as a voluntary offer in a workplace health or prevention program. Together, we define the scope, support, and a privacy-conscious evaluation. Personal health data remains with users.

Discuss a workplace-health or prevention pilot

Four ways to work together

Every partnership begins with an open conversation. Our common ground is genuine value for users with complete data sovereignty.

Employers & workplace healthSupport the wellbeing of your teams. Start a pilot project with us to build greater cycle awareness at work. Participation is 100% voluntary for employees, and our strict architecture guarantees that employers never receive personal health data.
Coaches & supportSupport your clients even more effectively. Test with us how cycle tracking and professional guidance can be connected safely in everyday practice, from simple data sharing to quick withdrawal. We especially welcome feedback from real-world use.
Health insurersModern prevention that reaches everyday life. Develop pilot projects with us to strengthen your members' health literacy. We guarantee the highest standards: Personal tracking data remains strictly separate from institutional evaluation.
Research & scienceSupport BodySeasons scientifically. Let us discuss research questions, review methods, and develop ethically sound study formats together to advance knowledge about cycle health.

Request a pilot

What BodySeasons already delivers today

Documented features and documented technology, one sentence each. No roadmap promises.

Product facts

  • Start without emailAn anonymous backup profile enables a start without an email address; a recovery code opens the profile again.
  • 13 cycle profilesBodySeasons covers natural cycles, hormonal contraception and different life stages through 13 selectable profiles.
  • Configurable trackingTracking areas can be enabled or hidden individually. Users decide which observations appear on their day view.
  • Granular coach sharingCategories, free-text notes and the time period are selected separately. On withdrawal, the coach immediately loses access and the sharing data is removed from active storage.
  • AnalysesPersonal cycle and monthly analyses summarise a selected completed period and can be saved as a PDF.

Security facts

  • Self-managed hostingThe website and core services run on self-managed servers. BodySeasons uses no advertising or tracking SDKs.
  • EncryptionData is transferred over HTTPS/TLS. Cloud-save copies, stored analyses, and shared coach data are encrypted server-side at rest with AES-256-GCM.
  • Data minimisationFor automatic weather observations, you can voluntarily choose a city or postal code; BodySeasons does not request your device location. Coach data is limited to granted permissions on both client and server.
  • GDPR-compliant processingRequested analyses also use purpose limitation, data minimisation, separate consent, documented data flows, and encrypted storage. Individual health data is not provided to cooperation partners.

View all security details

Project ambition

The largest scientific cycle database in the world

What that means, and what it explicitly does not mean.

What is meantA curated research database for cycle context and everyday guidance. That is reviewed specialist literature, sorted by profile and age group.
What is not meantNo collection of data about the people who use BodySeasons, and no count of unique study participants. Nothing from your entries counts towards this.
Documented scopeAs of 14 July 2026: 298 reviewed specialist sources, among them 96 studies and meta-analyses with documented samples totalling 171,500 participants, plus 13 cycle profiles and 5 age groups.
Limits of the claimThe scope is an internal project status, not proof of medical efficacy. Horoscope and moon phases are optional and explicitly not part of the evidence base.