App Customization

Shopify app customization by a team that builds its own apps

The4 builds Shopify apps used by over 75,000 merchants — including EComposer and Fontify — alongside themes trusted by 48,000+ stores. Our App Customization service tailors the Shopify apps you already use so they fit your store, your workflow, and your design, instead of forcing you to work around defaults.

You tell us what you need the app to do. We make it happen.

Best for

• Merchants whose app does almost what they need, but not quite
• Stores that want apps styled to match their theme and brand
• Teams needing apps configured or integrated correctly the first time

What's included

• App configuration and setup tailored to your store
• Styling and layout adjustments so the app matches your theme
• Custom settings, rules, or display logic within the app's capabilities
• Integration of the app into the right pages and sections
• Compatibility checks with your theme and other apps
• Mobile display checks
• 2 rounds of revisions
• Handover notes so your team can manage the app afterwards

What's not included

• Building a brand-new app from scratch
• The app's own subscription or licensing fees (you own the accounts)
• Changes outside the app's supported capabilities
• Product photography and copywriting

How it works

1. Brief and quote — You share the app and what you need it to do. We confirm scope and a fixed price.
2. Customize — We configure and tailor the app on your store.
3. Review — You review the result before it goes live.
4. Revisions — Two rounds to get the details right.
5. Publish — We finalize and confirm everything works as expected.

Turnaround: typically 1–2 weeks depending on scope, confirmed before we start.

Why The4

• We build our own Shopify apps used by 75,000+ merchants — we understand apps from the inside
• The studio behind themes trusted by 48,000+ merchants worldwide
• 4.97★ support rating across 4,200+ reviews
• 7 years building exclusively for Shopify

Frequently asked questions

How much does it cost?
App customization starts at $500. Final price depends on the app and the scope of changes — confirmed in writing before any work begins.

Which apps can you customize?
We work with most major Shopify apps, including our own (EComposer, Fontify). Share your app and we'll confirm what's possible.

Can you make the app match my theme?
Yes. Styling the app to fit your theme and brand is part of the service.

What do you need from me to start?
The app you want customized, access to your store, and a clear description of what you need. We guide you through the rest.

What if the change I want isn't supported by the app?
We'll tell you upfront. If it needs a different approach, we'll suggest options before any work begins.