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INFRASTRUCTURE

App Development

Cross-platform iOS and Android applications that feel native, sync in real-time with your backend, and give your business a direct channel to your customers' home screens.

Consumer AppsField Service TeamsDelivery PlatformsFitness & HealthEnterprise Internal Tools

What cross-platform app development actually means in 2025

The case for React Native has never been stronger. The performance gap between native Swift/Kotlin apps and well-engineered React Native apps has effectively closed for the vast majority of application types — anything that isn't a 3D game or a camera-intensive computer vision app runs indistinguishably on both platforms from a single codebase.

The business implication is significant: instead of funding two separate engineering teams (one iOS, one Android) and maintaining two separate codebases that inevitably diverge, you fund one team, ship simultaneously to both platforms, and apply every future improvement once. For most product companies, this represents a 40–60% reduction in ongoing mobile engineering cost without any meaningful sacrifice in quality or performance.

Key Capabilities

Single Codebase, Both Platforms

One React Native codebase ships to the App Store and Google Play simultaneously, with platform-specific UI conventions respected automatically.

Offline-First Architecture

Apps that cache critical data locally and sync changes intelligently when connectivity is restored.

Push Notification Engine

Personalized, AI-triggered push notifications that re-engage users at the optimal moment without being intrusive.

When a mobile app creates competitive advantage versus when it doesn't

A mobile app creates genuine competitive advantage in three scenarios: when your use case requires device hardware (camera, GPS, biometrics, Bluetooth), when push notifications are a meaningful part of your engagement model, or when your users would benefit from offline functionality. If none of these apply, a mobile-optimized web app is often the more cost-effective choice.

For businesses where these factors do apply — field service teams using offline job management, consumer apps relying on push re-engagement, platforms using biometric authentication — a well-built mobile app delivers measurable advantages in retention, engagement, and conversion that a mobile web experience cannot match.

40–60%
Reduction in mobile engineering cost vs. native
60fps
Guaranteed rendering performance
2 stores
Simultaneous iOS and Android launch

Business Impact

  • Launch on iOS and Android simultaneously from one codebase
  • 40–60% lower mobile engineering cost versus native development
  • Offline functionality for field teams and low-connectivity environments
  • Direct channel to your users' home screens via push notifications

From app architecture to App Store in 8–12 weeks

The first and most important architectural decision is the offline and sync strategy. We design the local database schema and the sync protocol before writing a single UI component — because retrofitting offline support onto an existing app is one of the most expensive mistakes in mobile development, and we build it right the first time.

UI development follows the Figma designs your team has approved, using React Native components that match the platform conventions of both iOS and Android simultaneously. Backend connection, push notification setup, and deep link configuration are built in parallel. App Store submission — including the provisioning profile setup, metadata, screenshots, and review process management — is handled entirely by us. Most builds go from kick-off to App Store approval in 8–12 weeks.

1

Architecture Design

We design the offline sync strategy and state management before writing UI.

2

UI Implementation

We build 60fps React Native interfaces from your approved Figma designs.

3

Backend & Notifications

We connect the app to your APIs and configure the push notification pipeline.

4

App Store Launch

We handle the complete submission, review management, and live deployment.

We handle the App Store so you don't have to

App Store submission is more complex than most clients expect: provisioning profiles, entitlements, screenshot requirements across 6+ device sizes, privacy manifest declarations, age ratings, and a review process that can reject your build for reasons that are not always obvious. We have submitted dozens of apps to both stores and know exactly how to structure a submission that passes review on the first attempt. You focus on the product; we handle the platform compliance.

Technologies We Use

React Native
Expo
Firebase
Zustand
Supabase

Frequently asked questions

Is React Native really as good as native Swift or Kotlin?

For 95%+ of app types, yes. The performance gap has closed significantly and major apps like Facebook, Instagram, and Shopify's merchant app are built on React Native. The remaining 5% are graphics-intensive applications that require direct GPU access — we'll tell you honestly if your use case is one of them.

Do you handle App Store submission?

Can the app use the device camera, GPS, or Bluetooth?

Ready to get started with app development?

Tell us what you are trying to build. We will respond within one business day with a clear project scope and timeline.

Start the conversation →
Let's Talk

Let's Build It — Directly
With Our Founder

Tell us about your project and we'll get back to you within one business day.

ZYNTEQ GUARANTEE

Response within 24 hours — or we handle your first setup for free.

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