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Investor Overview · April 2026

swell

Cycle-intelligent supplementation and intimate wellness — delivered daily, personalized by your body.

$50B
women's health market
$177B
global supplement market
80%
of women underserved

The problem

Women's health is broken by design.

The supplement industry sells women static products designed around average bodies on average days. Four bottles. A complicated regime. Zero feedback loop. The result is a drawer full of half-used vitamins and no measurable improvement.

A woman's nutritional and hormonal needs shift dramatically across a 28-day cycle — and differ even more between the 30% who have PCOS, the 8% who have PMDD, the millions entering perimenopause, and the millions with undiagnosed estrogen dominance. No product accounts for any of this.

80%
of women report PMS symptoms affecting daily function
1 in 10
women have PCOS — a dramatically different supplement need
40–60%
reduction in PMS achievable with targeted supplementation
$1B+
in annual US productivity losses from menstrual absenteeism

The product

One pouch. Every day. No decisions.

Swell works like birth control — a 28-day pack where each day's pouch is pre-loaded with exactly what your body needs. Each pouch is labeled with the time of day, whether to take with food, and the supplement nicknames so there's nothing to figure out. You log your period start, answer a short intake quiz, and Swell handles the rest. Connect an Oura Ring and the algorithm confirms ovulation from skin temperature rather than guessing from a calendar.

Menstrual
Days 1–5
The UnwindEvening
Anti-FlameMorning
ReplenishMorning
Pain PatrolWith meal
Follicular
Days 6–13
Fuel UpMorning
Go ModeMorning
SunshineMorning
Clear SkinEvening
Ovulatory
Days 14–16
Heat WaveMorning
Egg PowerMorning
Serotonin SeedMorning
+ ArdorTonight
Luteal
Days 17–28
The BalancerMorning
Mood LiftEvening
PMS ShieldEvening
The UnwindEvening

Ardor — intimate wellness, cycle-timed

A small nightly insert that increases blood flow, natural warmth, and lubrication while supporting your microbiome. Recommended automatically on ovulatory and luteal days — the days your body is most receptive. It's intimate wellness timed to your cycle: something you actually look forward to as part of a nightly ritual.

The personalization engine

7 hormonal profiles. 40 OTC ingredients. One pack.

Swell detects which of 7 hormonal profiles fits each user — from audio intake, a short symptom quiz, and wearable signals — then adjusts the ingredient stack without the user doing anything. A PCOS user and a PMDD user share the same phase calendar but receive fundamentally different packs. Every adjustment stays within OTC ingredients with published clinical evidence.

🌊Estrogen Dominant

Heavy periods, bloating, breast tenderness. DIM + Calcium D-Glucarate added to shift estrogen metabolism.

PCOS / High Androgen

Irregular cycles, acne, insulin resistance. Inositol + Berberine + Spearmint stack replaces base.

🕊️Low Progesterone

Spotting, anxiety before period, poor luteal sleep. Vitex + Ashwagandha + B6 deepened.

🌩️PMDD

Severe luteal mood crash. Saffron + Calcium + L-Theanine combination — clinical-grade without Rx.

🌅Perimenopause

Hot flashes, night sweats, irregular cycles. Black Cohosh + Red Clover + Selenium added.

💧Low Estrogen

Vaginal dryness, low libido, post-pill transition. Red Clover + Maca + Collagen layered in.

🦋Thyroid Support

Fatigue, hair loss, cold intolerance. Selenium + Methylfolate + D3 targeted stack.

Sample pouch — Day 19 · Luteal · PMDD profile

☀️ Morning
  • Serotonin Seed (B6, 50mg) · with food
  • Sunshine (D3, 2000 IU) · with food
🍽️ With lunch
  • PMS Shield (Calcium, 500mg)
  • Liver Love (Ca D-Glucarate, 500mg)
🌙 Evening
  • The Unwind (Magnesium, 300mg) · before bed
  • Mood Lift (Saffron, 30mg) · with food
  • Calm Focus (L-Theanine, 200mg)

Revenue model

Subscription-first. High margin. Sticky by design.

Core
$45/mo
Daily supplement pack, 4-phase protocol, app
Core + Ardor
$65/mo
Adds cycle-timed Ardor insert
Premium
$95/mo
Wearable sync, hormone panel, CGM insights

Unit Economics

COGS (supplements + fulfillment)$10–14/mo
Gross margin~72%
Blended ARPU target (Year 2)$75/mo
Target CAC (word-of-mouth heavy)$45–65
Avg retention (comparable category)14 months
LTV at 14-month retention$1,050
LTV:CAC ratio16–23x

Path to $12M ARR

Conservative. Achievable. Two years.

MilestoneSubsARPUARRWhen
F&F beta25$55$16KApril 2026
Waitlist launch250$60$180KQ3 2026
Influencer + PR push1,500$68$1.2MQ1 2027
Retail pilot (Ulta/Target)6,000$75$5.4MQ3 2027
Scale + clinical data13,000$82$12.8MQ2 2028

Competitive moat

Four defensible advantages.

Wearable-confirmed ovulation

Oura skin temp data catches the LH surge days before calendar math would. Phase recommendations shift in real-time. Competitors use averages. We use your body.

7 hormonal profiles — detected, not guessed

PCOS, estrogen dominance, PMDD, perimenopause, low estrogen, low progesterone, thyroid. Each gets a different stack. Intake quiz + audio + wearable signals detect which profile fits — automatically.

Ardor — a category that doesn't exist yet

The only cycle-timed intimate wellness product on the market. It creates a category no supplement brand occupies and no intimate brand has the data to enter. Recommended automatically on days your body is most receptive.

Data flywheel

Every symptom log refines the model for every user. At 10K users, Swell has more cycle-supplement response data than any academic study ever conducted. The database is the moat.

Intellectual property

Three provisionals. No competitor has filed on this.

Swell and Ardor are protected by three co-pending provisional patent applications covering the full stack — composition, device, and platform intelligence. No funded competitor is known to have filed on cycle-phase-timed intravaginal delivery combined with wearable-informed supplement personalization.

P1 · Composition + Method
Ardor Insert & Cycle-Sync
  • ·Vasodilatory + thermogenic + probiotic vaginal insert
  • ·Synthetic beneficial fluid formulation
  • ·Wearable-confirmed cycle-phase timing
  • ·Multi-product coordination system
P2 · Device
Wellness Delivery Device
  • ·Reservoir + pump + app-triggered ejection
  • ·Replaceable wellness payload cartridge
  • ·BLE cycle-phase delivery trigger
  • ·Thermal payload regulation (37–39°C)
P3 · Platform
Adaptive Supplement System
  • ·Four phase-specific oral formulations
  • ·Pre-loading protocol (1–3 days before phase shift)
  • ·Per-user cycle fingerprint model
  • ·Cross-product timing coordination
3 filed
Provisional applications
Patent pending
Status
Ardor · Swell
Trademarks
None known
Competitor filings on this

Landscape

Nobody else is doing all three.

Swell sits at the intersection of cycle-intelligent supplementation, hormonal profile personalization, and intimate wellness — a combination no funded competitor occupies.

CompetitorRaisedWhat Swell has that they don't
Perelel$9.5MStatic 4-bottle system, no personalization, no hormone profiling, no intimate layer
Bonafide$40M+Menopause demographic only, no cycle intelligence, no wearable integration
DAYE$8MSingle CBD tampon product, UK-only, no supplement stack
Evvy$25MMicrobiome diagnostic only — no delivery, no supplements
Flo / Clue$200M+Tracking apps — no physical product, no supplement integration, no revenue per pouch

The science

Real evidence. The delivery is the breakthrough.

Swell makes no drug claims — but the clinical backing is strong and growing. The breakthrough is delivery: the right compound, at the right dose, on the right cycle day, for the right hormonal profile. That last mile has never been built at consumer scale.

Saffron 30mg
Comparable to fluoxetine for PMS mood symptoms in RCTs
Magnesium 300mg
40% reduction in menstrual pain severity
Calcium 500mg in luteal phase
48% reduction in overall PMS symptom score
Vitex (Chasteberry) 400mg
Reduces PMS in 52% of users vs 24% placebo
Myo-Inositol 2g (PCOS)
Restores ovulation in PCOS in multiple RCTs
Spearmint extract (PCOS)
Reduces free testosterone — equivalent to 2 cups/day

The opportunity

Early. Real. Moving fast.

Swell is live as a PWA today. F&F trial underway. The personalization engine is built — 7 hormonal profiles, 40 OTC ingredients, wearable biodata integration, predictive phase analytics. The product works on calendar math alone and upgrades as users connect wearables or complete the hormone profile quiz.

We're not yet raising a formal round. If you want to be part of building this, the conversation starts with a coffee.

StagePre-seed / MVP live
Target ARR (24 mo)$12M
Gross margin target72%
LTV:CAC target16–23x
Ingredients in library40 OTC, evidence-backed
Hormonal profiles7 — auto-detected
CategoryFemtech · Supplement · Intimate wellness
Built bySteps Ventures

swell · steps ventures · confidential · april 2026