HerGuard AI Join Waitlist

HerGuard AI · Hong Kong

AI health guardians
for her — and the family.

We build AI companions for women’s and family health. Our first product, NourishMom, turns a meal photo into trimester-specific nutrition guidance — answering the one question no app answers: Did you eat enough today?

Join the waitlist See how it works
9:41
Week 24 · 2nd trimester

Good evening, Aria

Here’s how today is going.

62%
daily target met
7.3/29 mg
Iron
520/600 µg
Folate
850/1000 mg
Calcium
14/15 µg
Vit D

Iron needs a little love — your baby is building blood this week. Tonight’s plan can close the gap.

“Did you eat enough today?”

Illustration of a worried mother sitting alone, hugging her knees

The real problem

No one is watching what mothers eat.

90%

of pregnant women can’t meet nutrient needs by diet alone. AJCN 2023 · JAMA Netw Open 2019

2×

adult metabolic-syndrome risk from fetal programming. King 2003 · MDPI Life 2025

0

pregnancy apps track daily nutrition intake. Flo (77M users), 美柚 Meiyou (47M), Ovia, Premom — they track your cycle and push content. None track nutrition. Business of Apps 2025

The right food, the right amount — every meal, every stage, before it’s too late. Today, no one helps you get there.

NourishMom

One snap. Everything she needs to know.

Nourish one mother. Change two lives. Reshape a generation.

  1. Stage 01 · Snap

    Point. Shoot. Done.

    AI Vision identifies the food and how it was cooked. LiDAR depth sensing reads the plate in 3D and estimates the true portion weight — measured, not guessed.

    40–70%portion error — photo-only LLM guessing
    <15%error with AI + LiDAR depth · simple foods <10%
    Fridolfsson et al. 2025 · ACPR 2025
    9:41
    Scanning your dinner…
    Salmon · 120 g
    Broccoli · 85 g
    Brown rice · 150 g
    LiDAR depth · portion locked

  2. Stage 02 · Understand

    From grams to gaps.

    Every logged gram runs through USDA and Chinese DRIs nutrition data, then the Trimester Engine maps it to her exact week of pregnancy — surfacing today’s gaps in iron, folate, calcium and vitamin D.

    9:41
    Week 24 · 2nd trimester

    Good evening, Aria

    Here’s how today is going.

    62%
    daily target met
    7.3/29 mg
    Iron
    520/600 µg
    Folate
    850/1000 mg
    Calcium
    14/15 µg
    Vit D

    Iron needs a little love — your baby is building blood this week. Tonight’s plan can close the gap.

  3. Stage 03 · Plan

    Tonight’s dinner, solved.

    The gap becomes a plan: real dishes with ingredient-level grams — 120 g lean beef, 100 g spinach — plus absorption tips, like pairing iron with vitamin C and skipping tea within the hour.

    9:41
    AI dinner plan

    Tonight’s plan, made for you

    Three small dishes close today’s gaps.

    Tonight’s focus

    Beef & spinach stir-fry

    Closes your iron gap · ~8 mg

    Helpful

    Steamed broccoli & edamame

    Folate · 80 µg to go

    Helpful

    Warm milk before bed

    Calcium · 150 mg to go

    Pro tip: skip tea within 1 hr — tannins block iron absorption.

  4. Stage 04 · Guard

    Guarded, week after week.

    Pregnancy weight tracked against the safe gain band for her BMI and week — one continuous companion from pre-pregnancy through postpartum.

    9:41

    Your journey

    Week 24 · gaining beautifully on track

    64.5kg

    +6.5 kg since pre-pregnancy (58 kg)

    Within healthy range · target +4.3 to +7.5 kg
    W0W8 W16W24 W32W40
    This week +0.5 kg · right in rhythm

Diet logging via photo

One snap per meal — no barcode hunting, no weighing scales.

Personalized nutrition engine

Trimester-specific standards: Chinese DRIs · WHO · ACOG.

Pregnancy weight management

Safe gain bands per BMI and week, across the whole journey.

NourishMom for iOS is in development — join the waitlist for early access.

The journey

One companion, for the whole journey.

01 · Pre-pregnancy

Illustration of a woman meditating cross-legged, preparing her body for pregnancy
  • The neural tube closes by Day 28 — folate must start months before a positive test.
  • It takes two: about half of infertility involves a male factor — his nutrition counts just as much.
  • PCOS, the top cause of infertility, affects roughly 1 in 10 women (WHO: 8–13%) — and diet is its first-line care.

02 · Pregnancy

Illustration of a pregnant woman gently holding her belly
  • Gestational diabetes affects 1 in 6 pregnancies — and diet is the first-line treatment.
  • Nearly 4 in 10 pregnant women worldwide are anaemic (WHO) — iron needs surge to 29 mg/day.
  • “Hidden hunger”: calories full, yet calcium, iodine, vitamin D and DHA still run short.

03 · Postpartum

Illustration of a mother breastfeeding her newborn
  • Breastfeed vs. lose weight — crash diets cut milk supply. Recovery needs both, planned.

The moat — three layers

Built in layers. Owned where it matters.

Baseline 01

Food recognition

Third-party vision APIs as the baseline, plus self-trained models specialized for Chinese cuisine.

Ours 02

LiDAR portion & weight

Proprietary on-device depth sensing estimates true portion weight — not available from any API.

Ours 03

Nutrition calculation engine

Self-built. Maps intake to trimester-specific standards: Chinese DRIs · WHO · ACOG.

“Anyone can call a vision API. Layers 2 and 3 are ours.”

The HerGuard vision

Maternal nutrition is where we start — not where we stop.

NowNourishMomAI maternal nutrition companion
NextInfant & childnutrition companion
FutureThe whole familyAI health guardian

The team

Three disciplines, one table.

Zhou Yihui (Aria)

Founder & CEO

B.Sc. Computer Science + M.Sc. Nutrition Science (CUHK). Full-stack developer. Ex-Huawei.

Xiao Yanggongjie

AI & Vision Lead

Ph.D., The Hong Kong Polytechnic University. Research: AI & computer vision.

Liu Jiangbo

Product & Business

MBA (CityU HK). Former product manager, Tencent commercial division.

Nutrition Science × Computer Vision × Product & Growth

Make expert-level maternal nutrition accessible to every mother — shifting pregnancy care from reactive treatment to proactive daily prevention.

Be first in line.

NourishMom for iOS is in development. Join the waitlist for early access.

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No spam. One email when we launch.