Simplileap

// Build

Mobile app development that passes App Store review — and earns 5 stars

Native iOS (Swift/SwiftUI), native Android (Kotlin/Compose), React Native, Flutter, and PWA. We build mobile apps that are architecturally sound, performance-optimised, and delivered with the documentation your team needs to own them.

80+

Apps shipped

iOS + Android

Platforms covered

4.9/5

Average app rating

< 24h

Critical issue response

// Services

Mobile development services

From native to cross-platform — we cover every mobile development model with the engineering rigour that production apps demand.

  • Platform-native code (Swift, Kotlin)
  • Architecture designed for long-term maintainability
  • App Store and Play Store submission management
  • Crash reporting and analytics from launch
  • Structured handover with documentation

// Standards

Engineering standards for every mobile build

Platform native

iOS built with Swift/SwiftUI following HIG. Android built with Kotlin/Compose following Material Design 3. No compromise on platform quality.

Performance optimised

60fps scroll performance, sub-3-second cold launch, memory-efficient architecture, and battery-conscious background processing.

Security baseline

Keychain/Keystore for secret storage, certificate pinning for API calls, no PII in logs, and proper session management.

App Store ready

Privacy manifests, required device capabilities, age rating, screenshot sets, and metadata reviewed before first submission.

Offline capability

Appropriate offline strategy for your use case — from simple cache to full offline-first architecture with background sync.

Observable production

Crashlytics, Firebase Analytics or Mixpanel, and performance monitoring configured before launch — not retrofitted afterward.

// Technology

Mobile development stack

iOS

Swift 5SwiftUIUIKitCore DataStoreKitXCTestXcode Cloud

Android

KotlinJetpack ComposeRoom DBHiltRetrofitFirebaseAndroid Studio

Cross-Platform

React NativeFlutterExpoDartTypeScriptZustandRiverpod

Backend Integration

REST APIsGraphQLFirebaseSupabaseAppwriteWebSockets

DevOps & Quality

FastlaneBitriseGitHub ActionsEAS BuildFirebase Test LabCrashlytics

// Process

From discovery to App Store

01

Discovery

2–3 days

Technical requirements, target platform, minimum OS version, third-party integrations, and backend architecture. Design handoff review if designs are available.

// FAQ

Common questions about mobile app development

iOS only, Android only, or both?+

We advise based on your user demographics and go-to-market strategy. iOS-first is common for consumer apps in Western markets. Android-first for broader developing market reach. Both simultaneously with cross-platform is appropriate for B2B apps. We scope and advise based on your data.

React Native or Flutter vs native development?+

Native (Swift, Kotlin) delivers the best platform fidelity and deepest API access but requires separate codebases. React Native and Flutter share 95%+ of code, delivering faster time-to-market for most use cases. We recommend native for premium consumer apps, cross-platform for utility and B2B apps.

How long does mobile app development take?+

A simple MVP with 5–8 screens takes 8–12 weeks. A production app with backend integration, auth, payments, and 15–20 screens takes 16–24 weeks. Complex apps with real-time features, maps, or hardware integration take longer.

Do you handle App Store and Google Play submission?+

Yes — we manage the complete submission process including App Store Connect setup, metadata, screenshots, privacy manifests, and review communication. First-submission approval is our goal on every project.

What happens if Apple or Google rejects the app?+

App review rejection is handled as part of the delivery. We review the rejection reason, make required changes, and resubmit at no additional cost — provided the rejection relates to our implementation, not a client change to scope.

How do you price mobile app development?+

Project-based pricing for defined scope (most common) or time-and-materials for exploratory or rapidly changing requirements. We provide a detailed proposal after a discovery call.

Ready to build your next mobile app?