วางแผนติว ม.4-ม.6 ใน 1 หน้าจอ — ครอบคลุม TCAS ทุกข้อสอบ ไม่ตารางชน ลูกไม่หมดไฟ

Source signals

• SIG-20260426-sea-mainland-family-logistics-tutor-schedule-mor456: "ควรจัดตารางการลงคอร์สติวยังไงดี / หาที่เรียนพิเศษติวเข้า" — RECURRING, 5+ Pantip threads, kid+parent both stressed
• SIG-20260426-sea-mainland-family-logistics-after-school-tutor-pickup-chain (overlap): multi-tutor week logistics + traffic delays
• SIG-20260426-sea-mainland-family-logistics-school-expense-tracker (overlap): tuition-fee budget forecasting

What we ship

**Core features (MVP)**

• Master schedule: single calendar combining school + 4-6 tutor courses + homework + mock-exams + sleep — conflicts highlighted in red; iCal export for parents and teen
• TCAS coverage map: every tutor session is mapped to an exam-blueprint topic (PAT-1 calculus, TGAT subdomains); progress bar per discipline — "chemistry 67% covered, biology 23% — genetics under-coached"
• Tutor LINE parser: teen or parent forwards a tutor-center message ("สัปดาห์หน้า เพิ่มชั่วโมง พิเศษ พฤหัส 19:00") → AI adds it to the master schedule
• Burnout detector: AI watches total weekly load (school + tutor + sleep + mock exams) and flags "overload" if > 65 hours of academic activity or < 7h sleep 5+ days
• Family view + teen view: teen sees their day ("Saturday 9-11 physics, 13-15 chemistry"); parent sees financial / progress dashboard ("paid 12,500 for October chemistry, coverage 67%")

**Primary user flow**

1. Thai landing, hero "ม.4 เริ่มต้น — แผน 3 ปีพร้อมไหม?" — parent signs up via LINE Login

2. Setup: target program (med / engineering / computer eng), list of tutor centers already signed or planned, school + grade

3. Master schedule auto-imports first week via paste of LINE messages; conflicts auto-highlight

4. Teen invited via LINE deeplink — gets own view focused on "next 7 days"

5. Pricing trigger after 14-day trial: 299 THB/mo Solo (1 teen); 499 THB/mo Family (2 siblings in Mor.4-6)

**What it looks like**

• **Landing**: hero "80,000 บาท/ปี ค่าติว แต่ตารางชน 4 ครั้งต่อสัปดาห์" + before/after calendar screenshot; CTA "เริ่มฟรี 14 วัน"
• **Main screen (parent)**: weekly calendar grid + sidebar TCAS coverage % + monthly tutor-cost breakdown
• **Main screen (teen)**: "Today" card — next 3 events + study-load meter (green/yellow/red) + suggested 30-min break
• **Output**: Friday evening — parent push "📊 Week report: tutor 12h + school 30h + sleep 7h avg / TCAS coverage: physics 71%, chem 64%, bio 28% — need more biology / 💰 spent 18,500 this month"

**MVP build plan (13 days)**

• Day 1-3: backend User+Family+Teen+TutorCenter+Session+ExamTopic+Coverage; LINE Login
• Day 4-6: TCAS exam blueprint seed (public DEK Academic + Tutor Patai info); schedule conflict engine
• Day 7-9: LINE forward-bot for tutor messages; Claude parser + topic mapper
• Day 10-11: burnout detector (study-load thresholds), weekly digest, parent + teen dashboards
• Day 12: PromptPay subscription, Thai landing
• Day 13: deploy, soft launch in TCAS Pantip threads + Mor.4 LINE OpenChats

Reasoning

SIG-tutor-schedule-mor456 is RECURRING; plus after-school-tutor-pickup-chain (parents juggling 4-6 leg multi-tutor weeks). Thailand's TCAS system is a known pressure-cooker (4-6 tutor centers, 36-month pre-exam grind), and **nobody ships a unifying tool**: each tutor center keeps its own schedule in LINE/Excel; parents build Excel files (visible in Pantip "tukmue" threads). The problem is three-sided — schedule + topic coverage + burnout — and no one solves all three.

Stack-fit is ideal: PWA + LINE bot + standard CRUD. TCAS exam blueprint is public data. 13 days realistic. Recurring revenue is high — families plan a 3-year horizon, churn is low (only at university admission), ARPU 299-499 THB × 30-36 months = 9K-18K THB LTV.

Cross-sell roadmap: Mor.6 → tutor-affiliate program; Pratom→Mor.3 → expand into a tutor-finder for younger grades.

Quick competitive read

• **Tutor centers' own LINE/Excel** — fragmented, no cross-tutor view.
• **DEK Academic / Akekanat / Mybook** — content publishers (mock exams, study guides), not scheduling.
• **OnDemand / Tutor Patai own apps** — vertical lock-in, no cross-tutor view.
• **Cozi / Google Calendar** — generic calendar, no TCAS topics or exam coverage.
• **TCAS-Maxout (TH startup, sunset 2023)** — closest analog, but was tutor-marketplace + closed; not a master scheduler.
• **White space**: cross-tutor master scheduler + TCAS coverage map + burnout detection. Competitive pressure 7/10.

Initial pricing hypothesis

299 THB/mo Solo (1 teen Mor.4-6) — sits under heavy-budget categories (helper-OS 399, school-finder one-time 999) but enough for a 3-year commit; 499 THB/mo Family (2 sibling teens). 14-day free trial. Anchor: family already pays 80-200K THB/year for tutoring; 299 THB/mo is 0.2% of that for coordination + burnout prevention.

Distribution hypothesis

1. Pantip TCAS threads (peak in Mar / Aug) — "build-in-public" with detailed worked examples

2. LINE OpenChat "TCAS 67" / "เด็ก ม.6 67" — soft launch

3. TH Twitter — short Thai videos "80K ค่าติว แต่ลูกพังที่จะหมอ?"

4. Partnership with tutor centers (Tutor Patai, OnDemand, Mae Krathai): freemium offered as a plus-value to their students

5. Telegram channel "TCAS Master" (if a TH equivalent exists) — sponsored mention