HayReady
Live · free to start

Know your flare-up
48 hours before it hits.

A personal allergy forecast that learns from your symptoms, the weather, and the pollen count — so you know when to double up on the antihistamine, close the windows, or just stay inside.

Personal tracker · not a medical device · informational only.

Start free → Try demo See pricing

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Reads from
  • Oura Ring
  • Apple Watch / Health (beta)
  • Fitbit
  • Dyson
  • Tapo
  • Open-Meteo air & pollen

Optional. The free tier works without any of them.

Inside the app.

Three of the live screens — what you'll see right after you sign in.

Today · Auckland High
Allergy risk · today
68/100
  • Grass pollen22
  • Pressure drop 24h−7 hPa
  • Humidity81%
PM2.514µg/m³
HRV38ms
Live forecast with the drivers ranked by impact on your bad days.
History · 30 days 63% acc
Your top triggers · 30d
Grass pollen88%
Pressure drops64%
Indoor PM2.541%
30/60/90-day history. The dots mark days you logged symptoms.
AI · tomorrow Pro
● calibrated · 71%
Moderate flare-up likely
74% confidence
Top drivers
  • Pollen 3-day avg+38%
  • Yesterday severity5/10
  • Overnight PM2.519µg
Trained on 142 days of your data.
Personal AI that learns your 25+ feature pattern, not the city average.

Sign in to see your own →

Built for people who actually live with hay fever.

See what's coming

Pollen, humidity, air pressure, PM2.5 — mashed together with your own symptom history to forecast tomorrow's risk.

Log in 10 seconds

Tap what's bothering you — sneezing, congestion, itchy eyes. No essays, no 40-question surveys. Build up a real picture of your year.

Learn your triggers

After a few weeks, HayReady figures out what actually sets you off — grass pollen, pressure drops, smoke, cat dander — not just the generic "it's spring" advice.

Simple in, smart out.

  1. Tell us where you are. We pull local pollen + weather + air quality data every 30 minutes.
  2. Log how you feel. 10 seconds a day. Morning, evening, whenever.
  3. Get your forecast. Tomorrow's risk, next week at a glance, and alerts when things are about to get bad.

Optional: connect an Oura Ring for deeper insights (Pro tier). Apple Watch / Apple Health beta available now.

What's actually inside

Six layers of analysis, one calm dashboard.

Most allergy apps stop at "pollen is high." HayReady doesn't.

48-hour AI forecast

A personal Naive Bayes model trained on 19 features — pollen, air quality, weather, sleep, HRV, mood — predicts tomorrow's risk with confidence levels.

Pro

Trigger fingerprint

After a few weeks of logging, see exactly which triggers spike your symptoms — grass vs tree pollen, pressure drops, PM2.5, humidity. Strength bars, not vibes.

Pro

Body-warning radar

HRV drop, body-temp lift, low sleep score — Oura Ring and Apple Health signals fused against your 7-day baseline. Catches the morning before a flare.

Pro

What-if simulator

Drag the sliders. "What if grass was 9 instead of 4?" "What if I slept 8 hours?" The model re-runs and shows the delta — so you understand the system, not just trust it.

Pro

Indoor air, side-by-side

Connect a Dyson purifier or a Tapo plug — see your indoor PM2.5, VOCs and humidity right next to the outdoor numbers. Know when "stay inside" actually helps.

Free

Doctor-ready monthly PDF

Print-perfect summary of your month: severity heatmap, worst days, medications taken, sinusitis differential, sleep + body trends. Hand it to your GP.

Pro

Questions you might have.

Is my health data private?

Yes. Your symptom data lives in its own isolated database — one per user. We don't sell, share, or train on your data. You can export or delete everything with one click.

Do I need a wearable?

No. The free tier works with just symptom logging and weather/pollen data for your location. An Oura Ring unlocks deeper Pro features (HRV + sleep inform the AI forecast). Apple Watch integration arrives with our iPhone app.

What does it cost?

Free forever for daily forecasts, symptom logging, and 30 days of history. Pro is NZ$4.99/month (or NZ$39/year) for the AI predictor, wearable integration, doctor-ready PDF exports, and unlimited history. There's also a one-time Founder lifetime tier at NZ$99. See full pricing →

Is it live yet?

Yes — HayReady is live and accepting Pro subscriptions. Sign in with your email to get started; we'll send a magic link, no password needed.

Is this medical advice?

No. HayReady is a tracking and forecasting tool, not a diagnostic device. If you have serious allergy or asthma symptoms, please talk to a doctor or allergist.