MarketRadar
← All ideas IDEA-082 5.8 japan health-companion developed

Дневник сна для сменных работников — учитывает ротацию смен и подсказывает когда поспать, когда выйти на свет

Problem

JP сменные работники (медсёстры, фабрика, кейкан/警備, конбини, дальнобойщики) — 30%+ имеют SWD (交代勤務睡眠障害). Существующие приложения сна (Sleep Cycle, 熟睡アラーム, Sleep Meister) предполагают нормальный циркадный ритм; ротации (日勤→準夜勤→深夜勤) ломают их аналитику. Timeshifter ориентирован на jet-lag, не на JP shift workers. Нет JA-native приложения, которое принимает rotating schedule как primary input + выдаёт evidence-based light/nap nudges + PDF в 睡眠外来.

Audience

Японские сменные работники 22-50 лет (медсёстры, операторы фабрики, kaigo staff, конбини night staff, 警備, truckers), 1-3 ротации в месяц, не в активном лечении, ищущие способ объяснить себе и врачу 'почему я хронически устал'

Reasoning

Source signals

  • SIG-20260426-japan-health-companion-jp-shift-worker-sleep-debt — "夜勤・シフト勤務が睡眠に与える影響 / 3割以上が睡眠障害"

What we ship

**Core features (MVP)**

  • Shift-pattern schedule as primary input (日勤 / 準夜勤 / 深夜勤 / オフ rotations)
  • Sleep log + Apple Health optional import
  • Evidence-based nudges (timed light exposure, nap timing, caffeine cutoff) — strictly hint-only, no clinical advice
  • Trends view: sleep-debt accumulator + cluster classification from published research
  • 30-day PDF for 睡眠外来 visit

**Primary user flow**

1. Search 「夜勤 睡眠」 → JA landing

2. PWA install + 4-screen onboarding (import shift schedule)

3. Day 1: log first sleep, get first nudge

4. Day 7: see sleep-debt insight

5. Day 14: paywall on PDF/advanced trends → 580 JPY/month

**What it looks like**

  • **Landing**: 「夜勤・交代勤務、もう熟睡アプリと喧嘩しない」, night-hospital photo, dual CTA
  • **Main**: today's expected sleep window + actual + debt + next nudge
  • **PDF**: A4 single page, 30-day shift+sleep overlay + symptom log + cluster classification

**MVP build plan (9 days)**

  • Day 1-2: schema, JWT, PWA shell
  • Day 3-5: shift-pattern UI, sleep-log UI, rule-based nudge engine (~20 evidence-based patterns hardcoded)
  • Day 6-7: trends view, sleep-debt calc, Apple Health import
  • Day 8-9: WeasyPrint PDF, JA landing, Stripe paywall, deploy

Reasoning

Pain is HIGH-frequency and academically validated (npj Digital Medicine 2025-12 79K-person JP study). Western analogs (Timeshifter, ShiftCoach, ShiftSleep) exist but none have JA localization, and their framing doesn't fit JP shift-rotation cohort. Stack clean: PWA + rule-based nudge engine (no ML claims, easier regulatory). Build 9 days. Strict no-clinical-advice guardrail. Recurring-revenue fit moderate (depends on tenure of shift-work).

Quick competitive read

5 competitors profiled. Market density: **medium** (3-5 direct/adjacent). White space confirmed.

  • **[Timeshifter](../competitors/CMP-082-timeshifter.md)** ($24.99/yr, 6.5y, EN-only, Harvard-backed) — strongest science, but travel-framed and no JA → leaves JP shift-worker cohort wide open
  • **[ShiftCoach](../competitors/CMP-082-shiftcoach.md)** (£49.99/yr ≈ 9,500 JPY, 2.5y, UK-NHS-framed) — closest concept match (shift-as-primary-input), but English + UK pricing → ~40% premium vs our JP target
  • **[熟睡アラーム](../competitors/CMP-082-jukusui-alarm.md)** (480 JPY/mo, 11y, JP, top-10) — JP brand-name leader but assumes normal circadian → analytics break on 三交代制
  • **[Sleep Meister](../competitors/CMP-082-sleep-meister.md)** (370 JPY one-time, 13y, JP iOS-only) — iconic indie sleep tracker, no shift-awareness, no subscription model, no doctor-share PDF
  • **[ねむログ](../competitors/CMP-082-nemulog.md)** (Free ad-supported, 9y, JP) — community-comparison log; proves JP demand but no monetisation path, no medical workflow

**White space**: JA-native UI + 三交代制 (rotating shifts) as primary input + 睡眠外来 PDF + working-class price point (5,800 JPY/year) — none of the 5 cover all four. ShiftCoach covers shift-input but is EN+UK-priced; 熟睡アラーム/Sleep Meister/ねむログ cover JP but not shift-aware; Timeshifter has science but no JA + no medical PDF. Our defensibility: JA medical-vocabulary nuance (要配慮個人情報 / 睡眠外来 / 三交代制 cohort framing) + PDF as the primary recurring-revenue loop driver — community-comparison and habit-tracking competitors structurally can't replicate this without rebuilding around medical-utility.

Initial pricing hypothesis

Free: basic log + 7-day trends. **Premium 580 JPY/month** or 5,800 JPY/year — entry-level health-app pricing.

Distribution hypothesis

1. JA SEO: 「夜勤 睡眠 アプリ」, 「交代勤務 睡眠障害」 (low-comp niche)

2. ナース専科 / 看護roo content sponsorship

3. X/Twitter #夜勤 #ナース community

4. Stage 2: hospital/JR employer wellness partnership (B2B2C)

Source signals (1)

  • SIG-20260426-japan-health-companion-jp-shift-worker-sleep-debt