20+ real mistakes, caught before they cost you money.

Every item on this checklist is something that went wrong the hard way — broken tracking that went unnoticed for days, a page quietly losing 90% of visitors, apps nobody thought to review. This is the list I wish someone had handed me before I started.

What's inside:

• Organized by category: Tracking Setup, Page Performance, Compliance, Store Health, Ad Setup, Budget Discipline, Trust Signals
• Each item includes the real "why it matters," not generic advice
• A genuine pre-flight check, not a to-do list you'll ignore

Go through it once before you launch. It's the fastest way to avoid the mistakes that cost the most.