LINE-bot напоминает родителям о лекарствах — детям видно через семейный feed. Никаких новых апов, всё в LINE.

Source signals

• SIG-20260426-sea-mainland-health-companion-elderly-parent-upcountry-medication — "เชื่อมสมาชิกในครอบครัว / สมุดเช็คอิน / นัดพบแพทย์ — Bangkok working children + upcountry parents"
• SIG-20260426-sea-mainland-health-companion-thai-line-bot-medication-reminder-elderly — "Thai elderly 65+ are LINE-native but rarely install standalone apps... LINE-bot that sends 'ทานยา 8 โมง' in chat"
• SIG-20260426-sea-mainland-health-companion-hypertension-home-bp-log-elderly — "BP log via LINE bot для elderly как natural extension"

What we ship

**Core features (MVP)**

• Web admin (for daughter in Bangkok): adds parent's medications, schedule (08:00 before meal / 12:00 after / 20:00 bedtime), family-member list
• LINE-bot for the parent (no web UI): "🕗 8:00am morning meds — Amlodipine 5mg + Metformin 500mg + Atorvastatin 10mg — tap to confirm" with single button 「ทานแล้ว」
• Confirmation auto-forwards to family LINE-group: "✅ Mom took morning meds at 8:14am"
• Optional BP entry via LINE: "บันทึกความดัน" → reply "128 82" → bot saves + plots weekly chart
• Missed-dose escalation: if no confirm in 30 min → push to daughter (no blame, shared visibility)
• Monthly PDF summary: adherence % + BP weekly average + missed-dose log, posted to family chat on the 1st

**Primary user flow (daughter setup)**

1. Discovery: Facebook ad / Pantip-Sandwich-gen / SCB elder-care blog

2. Web admin → LINE Login → add "mom Bo" as family member → mom adds LINE OA friend (she already knows how)

3. Add medication list (manual or photo-OCR Phase 2)

4. Schedule reminders → test push

5. After 7-day trial: 199 THB/mo family plan

**Primary user flow (mom)**

1. LINE friend add (daughter handed her phone in person)

2. Morning: bot writes "🕗 ทานยาเช้า" → she taps 「ทานแล้ว」 (single button)

3. Sometimes: bot asks "BP today?" → she types "128 82" → bot confirms

4. NEVER any treatment recommendations

**What it looks like**

• **Landing**: "ดูแลคุณพ่อคุณแม่ผ่าน LINE — ลูกเห็นทุกอย่าง" hero + LINE-chat (mom) and web-admin (daughter) screenshot side-by-side + CTA "ทดลอง 7 วันฟรี"
• **Web admin (children)**: family list, per-parent medication scheduler, calendar view of confirmed/missed doses, BP weekly chart, sibling permissions
• **LINE-bot UX**: Thai-language, emoji-friendly, single-button confirms — no dropdowns, no forms

**MVP build plan (12 days)**

• Day 1-2: Postgres schema (families, parents, children, medications, schedules, dose_events, bp_readings), FastAPI + LINE Webhook setup
• Day 3-5: LINE-bot conversation flow (push reminders, confirm callback, BP entry parser)
• Day 6-8: Web admin dashboard (React) with medication scheduler, family-feed view, BP chart
• Day 9-10: missed-dose escalation + monthly PDF
• Day 11: Stripe subscriptions + PromptPay 2C2P
• Day 12: Thai landing, deploy CF Pages + Railway, LINE OA verification submission

Reasoning

This is the **highest-pain signal** in the batch — 4 independent sources document Thai sandwich-generation crisis (SCB blog, Manoot-tang-wai, Proudlycare). Filial-piety pressure (กตัญญู) + practical impossibility (children in Bangkok, parents upcountry) + accelerating ageing demographics (UN projects 28% over-60 by 2030 in TH). LINE has deepest elderly penetration of any digital channel in Thailand. Wedge: LINE-bot-first design + family-feed integration. Existing CareConnect / Doolae / BeHELP are single-caregiver standalone apps, not LINE-native — moms won't open them. Stack: LINE Messaging API + Postgres + React admin, 12 days. Recurring-revenue fit is HIGHEST in batch — chronic-care daily use, very low churn once family ritual-flow forms. **Strongest distribution leverage** (LINE in Thailand) and strongest pain-signal density.

Quick competitive read

• **CareConnect (Proudly Care)**: TH-local, single-caregiver standalone app, not LINE-bot — mom won't open
• **Doolae / BeHELP**: TH telemedicine + caregiver, focus on consult booking not routine
• **MorOnline**: TH gov telemed, not routine
• **Medisafe / Pill Reminder (Western)**: standalone apps, mom won't open
• **Maitree LINE OA (gov)**: info-bot, not personalized
• **White space**: LINE-bot personalized medication reminder + multi-sibling feed unoccupied. ~1-2 partial overlaps. LINE distribution moat is significant for Thai-only player.

Initial pricing hypothesis

7-day free trial. **Family plan 199 THB/mo** (~$5.60) or 1990 THB/yr (~$56) — supports 2 parents + 4 children-watchers + LINE-bot + monthly PDF. Alternative: "Pay once 2999 THB lifetime per family" via PromptPay (lump-sum buyer pattern in Thai mid-class). ARPA $5-7/mo is reasonable for chronic-care.

Distribution hypothesis

1. **LINE sticker pack** "หมอน้อย-care" free → mass distribution in LINE

2. **Facebook ads** targeting Bangkok 30-50 "working in Bangkok, parents in Isan" — laser-targeted

3. **SCB / KBank / KTB elder-care content marketing** — banks already publish on this topic, sponsored placement

4. **Pantip Sandwich-gen forums** + Buddhist filial-piety threads

5. **Hospital partnerships** — Bumrungrad / Bangkok Hospital elderly-discharge programs → QR-card to bot

6. **TikTok TH** sandwich-generation life-vlog placements