(Photo Illustration by Sheldon Cooper/SOPA Images/LightRocket via Getty Images)SOPA Images/LightRocket via Getty ImagesAppLovin (APP) and Shopify (SHOP) often attract investors for very different reasons: Shopify as a leading e-commerce platform that enables millions of merchants to build and run online stores, and AppLovin as a software-driven marketing and app-monetization powerhouse that helps mobile developers acquire users and optimize ad revenue. Both stocks tend to move sharply on shifts in growth ex ...