Selene

Cycle-phase supplement subscription — AI-personalized, clinically structured

OverviewCompetitiveTiersEconomicsGTMClinical tier

At a glance

$40B+
Women's wellness market
73M
US women 18–45 (TAM)
$39–$129
Monthly subscription tiers
18
Hormone profiles supported
39
Clinical-grade ingredients
4
Cycle phases, precisely timed

Selene ships four distinct supplement blends — one per cycle phase — tuned monthly based on each user's logged symptoms, wearable data, and hormone profile. The clinical tier adds HIPAA-grade provider sharing, enabling OB/GYNs and integrative practitioners to co-manage patient supplementation.

Competitive landscape

No competitor combines all four cycle phases, AI personalization, daily flavored powder format, and a clinical HIPAA tier in a single product.

CompanyFormatPhasesPersonalizationClinicalPriceVegan
SeleneCapsules + powder4 preciseAI + biodata✓ HIPAA$39–$129/mo
FLO LivingCapsules4 phasesProtocol only$99/mo coaching?
MixhersFlavored powder1 (daily)$45/mo?
BeeyaSeed cycling2 (follicular/luteal)$45/mo
HormifyCapsules4 phasesQuiz only$79/mo
SemaineCapsules1 (luteal only)$35/mo
BONDCapsules4 phasesQuiz only$68/mo
OrganifiFlavored powder1 (daily)$70/mo

Market gap: Mixhers (the closest daily powder competitor) offers one generic blend with no phase timing and no personalization. No competitor has a HIPAA-grade clinical tier enabling provider co-management.

Differentiation

1
Four-phase precision
Competitors offer 1–2 phases. Selene ships four distinct blends timed to follicular, ovulatory, luteal, and menstrual phases.
2
AI personalization
Dose scaling from symptom logs, wearable HRV/temperature, and hormone profile. Gets more accurate over time — a compounding moat.
3
Clinical HIPAA tier
Providers can access patient data under BAA. Opens B2B2C channel through OB/GYN and integrative medicine practices.
4
Scientific ingredient sourcing
39 ingredients in NSF-certified, clinically validated forms (e.g., magnesium glycinate not oxide; methylfolate not folic acid). Reviewable by medical professionals.
5
Data flywheel
Each logged cycle improves the model for all users. Longitudinal cycle + symptom + supplement response data is a defensible proprietary dataset.

Subscription tiers

Core
Phase-synced supplement stack, 18 hormone profiles, AI phase prediction
$39/mo
Balance
Core + advanced hormone targeting, extended 39-ingredient library
$59/mo
Optimize
Balance + wearable integration, real-time HRV/temp dose scaling
$79/mo
Clinical
Optimize + HIPAA-grade provider sharing, FHIR R4 export, audit log
$129/mo
Annual (any tier)
Prepaid annual billing discount on all tiers
–17%

Unit economics

~$14/mo
COGS (est.)
ingredients + fulfillment
~64%
Gross margin
at Core tier
$800+
LTV target
20+ mo avg retention
$55–75
CAC target
blended channels
10–14×
LTV:CAC
at scale
<2 months
Payback
at Core tier

Unit economics are modeled estimates based on comparable DTC supplement businesses. COGS will vary with ingredient costs, fulfillment partner, and tier mix.

Go-to-market

ChannelEst. CACNotes
Cycle-tracking app partnerships$30–50Clue, Flo, Natural Cycles — contextual upsell
OB/GYN provider referral$40–60Clinical tier drives institutional trust
Organic / SEO$20–40Symptom-based content (PMS, fatigue, PCOS)
Creator / affiliate$55–80Wellness + women's health micro-influencers
Paid social (Meta)$80–110Retargeting + lookalike from early users

Provider partnerships (OB/GYN, integrative medicine) are the highest-leverage channel for the Clinical tier — practitioners become distribution with built-in trust. Target: 200 provider accounts in Year 1.

Clinical tier — HIPAA expansion

The $129/mo Clinical tier opens a B2B2C channel that consumer-only competitors cannot easily replicate. Providers share in patient outcomes; patients get clinical-grade oversight.

Provider portal
NPI-verified login, patient roster, cycle + symptom dashboards
FHIR R4 export
Structured data export compatible with EHR integrations (Epic, Athena)
Secure sharing link
Patient-controlled share; provider sees anonymized or identified data
Audit log
Full access log for HIPAA compliance; immutable record in Supabase
BAA checklist — required before Clinical launch
Sign BAA with Supabase (Enterprise ~$500/mo)
Sign BAA with Vercel (Enterprise)
Resolve Anthropic BAA — or switch clinical AI to Azure OpenAI
Set PHI_ENCRYPTION_SECRET env var in Vercel
Replace hardcoded admin secret in API routes
Run Supabase migration: supabase/migrations/20260502000000_clinical.sql
MethodologySourcingPrivacyAppSelene · confidential