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← All ideas IDEA-078 5.5 japan health-companion developed

Дневник мигрени для японского врача — одной кнопкой генерирует PDF, который умещается на экране кабинета за 5 минут

Problem

Японские пациенты с хронической мигренью не могут за 5-7 минут приёма у 頭痛外来 объяснить врачу свой паттерн приступов. Apple Health/Notes/бумажные дневники не структурированы под японского врача, а западные приложения вроде Migraine Buddy перегружают и не оптимизированы под формат японской консультации.

Audience

Японцы 20-50 лет с хронической или эпизодической мигренью (4+ приступов в месяц), посещающие 頭痛外来 или невролога раз в 1-3 месяца, ищущие способ принести структурированную справку на приём

Reasoning

Source signals

  • SIG-20260426-japan-health-companion-jp-migraine-doctor-share-log — "病院で見せる / 医師に正確に伝える"

What we ship

**Core features (MVP)**

  • One-tap attack logging: intensity, duration, side, aura, JP-typical accompanying symptoms
  • JP-specific trigger checklist (低気圧, menstruation, sake/red wine, MSG, sleep debt, typhoon front)
  • Medication log: prophylactic + abortive (Imigran/Maxalt/Relpax) with timestamps
  • Trigger-correlation algorithm (binary Pearson) — surfaces "your top 3 triggers based on 30 attacks"
  • **One-button PDF generator: `次回診察用PDF生成` → A4 one-page handout for the 5-min specialist visit**

**Primary user flow**

1. Discovery: Google search 「片頭痛 アプリ 病院 PDF」 or note article

2. PWA install (no App Store gate, no Apple review)

3. 2-screen onboarding (JA default), no signup required for first 30 days

4. Log first attack in 3 taps (intensity → triggers → save)

5. After 3-5 attacks: "preview your doctor PDF" CTA → free user gets 1/month, upgrade for unlimited

**What it looks like**

  • **Landing page**: 「頭痛外来の5分で全部伝わる」 hero, mock PDF on iPad-in-clinic photo, dual CTA "無料で始める" + "デモPDFを見る"
  • **Main screen**: oversized red 「今、頭痛が始まった」 button (must work one-handed mid-attack), bottom sheet: intensity slider + 8-trigger chip row + save
  • **Output PDF**: A4 single page — title `頭痛日記レポート / Migraine Diary Report / 期間: 2026-01-15 〜 2026-04-15`, 90-day frequency heatmap, top-3 triggers, abortive-medication response %, last 10 attacks table

**MVP build plan (10 days)**

  • Day 1-3: Postgres schema (attacks, triggers, medications, users), FastAPI auth, PWA shell with offline-first attack logging
  • Day 4-7: log UI in JA, calendar/heatmap view, trigger-correlation algorithm
  • Day 8-9: WeasyPrint A4 template (JA fonts via Noto Sans CJK), Stripe paywall on PDF unlock
  • Day 10: JA landing, deploy to CF Pages + Railway, AppMatch submission

Reasoning

The "5-7 minute Japanese specialist consultation" pain shows up in 4 independent JP sources (頭痛ろぐ reviews, Migraine Buddy JP, zutuukanripg, YaDoc). Existing apps treat doctor-export as a side feature; **the gap is making it the primary loop, JP-tuned**. Stack-fit is clean — PWA via CF Pages + Railway + Postgres + Stripe + WeasyPrint covers everything in 10 days. Strict no-diagnosis guardrail keeps it out of SaMD scope. Recurring-revenue fit is good for chronic-condition cohort: 4+ attacks/month means daily app contact, low churn once habit forms.

Quick competitive read

Five competitor profiles built (CMP-078-*):

  • **Migraine Buddy (Healint, 3.5M users, $4.99/mo Pro)** — global leader, JA-translated but dense Western multi-page PDF format unfit for the 5-min JP consult. Our wedge: A4 single-page JA-tuned PDF.
  • **頭痛ろぐ (Zutsuu-log, ¥370/mo)** — JP-native incumbent and our highest-risk competitor, but stale 2018-era UX, 12-field attack form, and **no PDF export, only CSV**. We win on the artifact (PDF) and modern PWA UX.
  • **N1-Headache (Curelator, free, research-funded)** — clinical-grade but requires 90 days of daily logging before any insight. We deliver useful PDF after 5 attacks. No JA locale.
  • **YaDoc (free-to-patient, B2B clinic-paid)** — JP general telemedicine, mind-share risk if patient's clinic uses it, but per-condition logging UX is shallow and no migraine-PDF artifact. Counter-positioning lead: PDF beats general health record in a 5-min consult.
  • **Migraine Coach / Nerivio (free, Rx-bundled, US-only)** — included for completeness; near-zero overlap, no JP path in foreseeable horizon.

**Market density: medium** (2 incumbents in JP locale: Migraine Buddy JP-translation + Zutsuu-log JP-native). **White-space hint**: no incumbent positions a JA-tuned A4 single-page handout PDF as the *primary value loop*. Migraine Buddy treats PDF as a Pro side-feature; Zutsuu-log doesn't ship one. The 7-min-consult-optimized PDF artifact + JP-specific triggers (低気圧, MSG, sake, JP Triptan brand names) + PWA distribution (no App Store JP health-review gate) = the wedge.

Initial pricing hypothesis

Free: 1 PDF/month, 30 attacks max. **Premium 480 JPY/month** (or 4,800 JPY/year): unlimited PDF, CSV export, Apple Health sync. Price floor matched to JP IAP norms (Awarefy 1,200 JPY, Luna Luna 440 JPY).

Distribution hypothesis

1. **JA SEO** on note.com + 「頭痛 アプリ 病院」 keyword bucket (low-comp, intent-rich)

2. **AppMatch / APPLION** new-health-app submission

3. **X/Twitter JA** in #片頭痛 / #頭痛 community

4. Stage 2: physical QR-flyers placed in 頭痛外来 waiting rooms via clinic partnerships

Source signals (1)

  • SIG-20260426-japan-health-companion-jp-migraine-doctor-share-log