How to Choose Shopify Apps Without Slowing Down Your Store

Shopify's app store is one of its biggest strengths: need a feature, install an app, done. But that convenience has a downside. Every app you install can add scripts, slow your store and pile on monthly fees. Here is how I help clients get the features they need without turning their store into treacle.

Why apps slow stores down

• Many apps inject their own JavaScript and CSS on every page, even pages that don't use them.
• Some make extra network requests to third-party servers.
• Apps can conflict with each other and with your theme.
• Uninstalled apps sometimes leave leftover code behind.

A store with 15 apps is often slow, harder to maintain, and expensive, regardless of how good each individual app is.

How to choose apps wisely

1. Ask "do I actually need an app for this?"

Shopify keeps adding native features. Before installing, check whether the platform already does it:

• Custom discounts, shipping and checkout rules can often be done with Shopify Functions instead of an app.
• Custom content can be done with metaobjects and metafields.
• Basic needs are frequently covered by theme settings.

The cheapest, fastest app is the one you never install.

2. Vet the app before installing

• Read recent reviews (especially the 1 to 3 star ones).
• Check it is actively maintained and compatible with your theme.
• Look at the support quality and pricing (watch for usage-based fees that scale badly).

3. Prefer apps that use app blocks

On Online Store 2.0 themes, apps that use app blocks add and remove cleanly through the theme editor, no leftover code when you uninstall. Favour these over apps that inject code directly.

4. Watch the performance impact

• After installing, test your store on mobile with PageSpeed Insights before and after.
• If an app noticeably drags speed, weigh whether the feature is worth it.

Keep your store lean over time

• Audit apps regularly. Uninstall anything you no longer use.
• Check for leftover code after removing an app.
• Consolidate where one app can replace several.
• Treat every app as a cost in money, speed and complexity, not just a feature.

The takeaway

Apps are useful, but more apps is not better. Use native Shopify features first, vet what you install, prefer clean app-block apps, and audit regularly. A lean store with the right few apps beats a bloated one with dozens.

Store feeling slow or drowning in apps? Send me the link and I'll audit what's helping, what's hurting, and what you can drop.