Lior Eldan explains how to grow a mobile app from launch to global scale without relying on luck. With 2+ million apps in each store, he says launches need real marketing, not hope. He focuses on user acquisition, App Store Optimization, and tightening the funnel and onboarding so installs turn into active users. After Apple's iOS privacy shift, results may not appear until you hit a reporting privacy threshold, so tiny spends can mislead. Once product market fit is clear, he scales budget until costs rise and you move past your ideal customer profile, then adds channels and markets. At that point, localization, segmented messaging, and AI powered creative testing and personalization help keep growth efficient, including preparing for LLM discovery. Takeaway: test fast, adapt to platform changes, and let failures guide the next iteration.