A Shopify app adds features that the core platform doesn't include, or handles differently. Apps cover reviews, email and SMS marketing, upsells and bundles, subscriptions, loyalty programs, shipping, support and analytics. Most come from the Shopify App Store, many with a free plan or trial and a monthly fee after that.
Apps shape how a store sells and what it costs to run. Each one can add a subscription, and some add scripts that slow the storefront down.
- Install an app to solve a specific problem, not because it is popular.
- Check reviews, support and how cleanly the app uninstalls, since some leave code in your theme.
- Review your apps regularly: monthly app fees eat into your net profit margin.
- Test page speed before and after installing anything that touches the storefront.
Common mistakes: stacking several apps that do the same job, keeping apps you no longer use, and installing apps on a live store without checking how they look on a phone.
The apps a successful store runs say a lot about its strategy. In SellWinners, Shop Analytics lists the Shopify apps a store has installed, and in Shops you can filter stores by the apps they use.