Сфоткал чек с мастерской — приложение само записало работу, пробег и цену. Напомнит за неделю до окончания страховки.

Source signals

• SIG-20260426-sea-mainland-hobbyist-utility-th-moto-maintenance-log: «I'm looking for an app to log vehicle maintenance — focus on REPAIRS, not fuel — there's already plenty for fuel»
• SIG-20260426-sea-mainland-hobbyist-utility-th-vehicle-trip-expense-log: «I want to log fuel and washes too, but I don't have enough time» (Excel-workaround, 8-year owner)
• SIG-20260426-sea-mainland-hobbyist-utility-th-fuel-economy-stat: validates that TH riders track meticulously and post stats on Pantip

What we ship

**Core features (MVP)**

• Repair log: date, shop, mileage, line-items, receipt photo, repair type (engine/brakes/tires/electrical)
• Thai-receipt OCR: photo → auto-filled fields (Claude Sonnet 4.6)
• Reminders: insurance renewal (พ.ร.บ. + voluntary), registration (ทะเบียน), interval-based service (5K/10K/20K km)
• Per-VIN history timeline with photos, PDF export for resale
• LINE Notify push in Thai: "พ.ร.บ. expires in 7 days — renew via PromptPay"

**Primary user flow**

1. LINE Login → model + current mileage

2. After each shop visit — "snap receipt" button → auto-parse

3. After 6 months — timeline history, "Service Book PDF" export

4. Pro upgrade when user adds 2nd motorcycle (family subscription)

**What it looks like**

• **Landing**: hero "สมุดบันทึกการซ่อม มอเตอร์ไซค์ของคุณ — ถ่ายใบเสร็จก็พอ" + Pantip-style screenshots + Thai FAQ
• **Main app screen**: repair timeline + camera-FAB + next reminder pinned at top
• **PDF Service Book**: B&W, minimal, printable — TH Sarabun official font

**MVP build plan (12 days)**

• Day 1-3: backend (Vehicle/Service/Reminder models), LINE Login OAuth, PromptPay webhook
• Day 4-6: OCR pipeline (Claude vision), Thai UI in React + Tailwind
• Day 7-9: PWA install + LINE Notify integration + reminder cron
• Day 10-12: PDF export, landing, post to Pantip pantip.com/forum/auto, deploy

Reasoning

4+ Pantip threads (35210847, 35625674, 30138534, 38079062) explicitly say "fuel-loggers exist; we need REPAIR-tracker". One user built a DIY web tool (CarcareNote) — strong evidence of market gap. TH has ~10M registered motorcycles; 8-year ownership = high LTV. Stack fits perfectly: Cloudflare Pages PWA + Railway FastAPI + LINE Login + PromptPay cover all TH-specific needs without native mobile. **white space** — global fuel-app market is saturated, but REPAIR-only with TH-locale + LINE integration is empty.

Quick competitive read

• **Fuelio / Motolog** — fuel-first, thousands of TH installs, but DON'T cover repairs; Pantip comments say "exists, not what we need".
• **CarcareNote** — one user's DIY web tool, no PWA/push, doesn't scale.
• **My Cars (Sygic)** — global, English, no Thai shops or PromptPay.
• **white space**: REPAIR-only, Thai localization, LINE integration, PromptPay, resale-grade PDF. 0 competitors with traction.

Initial pricing hypothesis

Free tier — 1 motorcycle, basic log. Pro — 99 THB one-time (lifetime, 1 vehicle, unlimited OCR) or 49 THB/mo for multi-vehicle + cloud backup + LINE reminders. Family-pack 199 THB/year for 4 vehicles. TH consumers prefer one-time for utility tools; freemium IAP optimal.

Distribution hypothesis

1) Reply on existing Pantip threads with "built an app for this, free to try"; 2) LINE OA channel with weekly maintenance content; 3) Facebook groups "กลุ่มคนรัก Honda PCX", "Yamaha Aerox Club Thailand" (50K+ members each); 4) TikTok shorts "5 signs to replace your chain" with soft CTA. Programmatic SEO in Thai for "บันทึกซ่อม มอเตอร์ไซค์".