# [Service Name] Business Model Canvas (6 boxes)
① Problem      — Who is struggling, in what situation, and why?
② Alternatives — What are they using right now? Where does it fall short?
③ Solution     — Your service's core function in one sentence
④ Differentiator — What existing alternatives structurally cannot do
⑤ Revenue model — One-time / subscription / other + the key paid-tier trigger
⑥ Cost structure — What you spend per user per month (calculated in Ch.3.4)

# Pricing Tier Worksheet
1. What's the minimum needed to experience the core value?  → put it in Free
2. What's the first moment a user thinks "I want more"?     → Free / Pro split point
3. What does one Pro user cost you per month?               → your price floor
4. What price range do existing alternatives charge?        → the price gravity field
5. How will you accommodate heavy users?                    → higher tier or BYOK