Pixel2HTML

Mobile App Development

Mobile App API Integration

Connecting your mobile app to the APIs and third-party services it depends on: your backend, payments, authentication, maps, analytics, push notifications, wired up and tested properly.

Overview

The app is only as good as what it's connected to

A mobile app's frontend is usually the visible part, but most of what makes it actually useful lives in what it's connected to: your backend API, a payment processor, authentication, maps, analytics, push notification services. Getting these integrations right, including handling errors, offline states and retries gracefully, matters as much as the UI itself.

We integrate against your existing backend (REST or GraphQL), connect the third-party services your app depends on, and build in the offline handling and caching that keeps the app usable when a connection drops instead of just showing an error screen.

Tools & platforms we use

  • REST / GraphQL
  • Firebase
  • Stripe SDK
  • OAuth

What's included

Integrations that handle the edge cases, not just the happy path

REST & GraphQL integration

Connected to your existing backend, with proper error handling and loading states, not just the happy path.

Third-party SDK integration

Payments, authentication, maps, analytics and push notifications wired in and tested, not just dropped in and assumed to work.

Offline sync & caching

Data cached and synced sensibly so the app stays usable when connectivity drops, then reconciles once it's back.

API security review

Authentication, token handling and data transmission checked for common mistakes before launch.

Questions

Common questions about app API integration

4 questions

Do you build the backend API as well?

We focus on the app side and integrating against an existing or planned API, rather than building backend infrastructure ourselves. We can work closely with your backend team or a backend partner to make sure both sides line up.

Can you integrate Stripe, Firebase or similar services into our app?

Yes, these are among the most common integrations we handle: payments through Stripe, backend and auth through Firebase, plus maps, analytics and push notification providers depending on what the app needs.

What happens if the app loses connectivity?

Depends on what we agree the app should do, some data can be cached locally and synced once connectivity returns, other actions might need to queue and retry. We'll design this around your specific use case rather than leave it as an afterthought.

Can you review API integrations we've already built?

Yes, this is a common request, particularly around security, checking how tokens are stored, whether requests are properly authenticated, and whether sensitive data is handled correctly.

Quick question?

Ask us about App API Integration

Not ready for a full brief? Send a question and a developer who works on this will answer it, usually within one business day. No sales call, no obligation.

Already have designs or a scope? Send a full project brief instead.

Ready to get started?

Tell us which services your app needs to connect to.

Send your API documentation or a list of the integrations involved, and we'll come back with a fixed estimate.

If the first milestone doesn't match the brief, we'll revise it at no extra cost.

NDA signed before we see anything. Delivered under your brand.