Mobile Engineering by Lintelox

Custom mobile apps for iOS and Android

We build mobile products for smartphones and tablets: from interactive touch prototyping to Apple and Google store compliance. Cross-platform engineering on React Native, fluid 60 FPS transitions, offline-first data, and dependable backend APIs.

Platform architecture comparison

We match the development approach to your operational goals: release schedule, budget constraints, and hardware integration depth.

Recommended for 80% of apps

Cross-Platform (React Native)

A single TypeScript codebase compiling directly to native UIKit and Android components with zero webview overhead.

Advantages:
  • Up to 35–40% budget savings by employing a unified engineering team
  • Simultaneous feature releases across App Store and Google Play
  • Native touch gestures, fluid 60 fps transitions, and component reusability
  • Fast Time-to-Market: interactive prototype to working build in 4–6 weeks
Trade-offs: complex 3D game engines, extensive AR/VR rendering, and low-level proprietary Bluetooth sensor firmware.
Stack: React Native, TypeScript, Expo, Redux Toolkit
iOS & Android

Flutter

One shared codebase and a consistent application interface across both platforms.

Advantages:
  • One project for the App Store and Google Play
  • Consistent interface rendering across iOS and Android
  • Quick development of screens and animations
  • Device features through packages and platform channels
Trade-offs: less common system features may need a dedicated native integration.
Stack: Flutter, Dart, packages, platform channels
Google Ecosystem

Android Native (Kotlin)

Unrestricted control across diverse Android smartphone form factors, rugged industrial scanners, and tablets.

Advantages:
  • Optimized memory efficiency on budget and non-standard device hardware
  • Persistent background processing, direct filesystem access, and USB peripherals
  • Compatibility with enterprise hardware (barcode readers, POS terminals)
  • Declarative modern interface architecture on Jetpack Compose
Trade-offs: requires wider testing matrices due to OS fragmentation and display differences.
Stack: Kotlin, Jetpack Compose, Coroutines, Room, Retrofit

How we design mobile interfaces

Small screen viewports demand zero visual clutter. We structure interactions so actions feel completely intuitive.

Wireframes

UX Wireframing & Journey Mapping

We chart user journey flows, mapping out authentication paths, tab navigation logic, and offline connectivity error states.

Prototype

Interactive Figma Prototyping

We build clickable prototypes you can launch on physical devices using Figma Mirror to evaluate thumb-reach zones and gesture responsiveness.

UI System

Mobile UI Kit & Guidelines

We establish typographic hierarchies, iconography, active touch feedback, and full native Light and Dark theme color tokens.

Stores

Production Assets & Store Creatives

We export rasterized and vector assets across all pixel densities (@1x, @2x, @3x) alongside marketing screenshots for storefronts.

What we need from you to begin

We handle the technical heavy lifting, but publishing official applications to global storefronts requires corporate developer credentials and core business parameters.

Unsure how to set up corporate accounts?

We provide step-by-step documentation and guide you through Apple D-U-N-S verification and Google Console registration.

Apple & Google Developer Accounts

Apple Developer Program ($99/year) and Google Play Console ($25 one-time). Apps are published strictly under your corporate legal identity.

Core MVP Business Logic & Priorities

A clear definition of the primary user problem the app solves in v1.0. A focused initial feature set supports a faster release.

Brand Assets and Identity Guidelines

Vector logo, corporate brand colors, and typography preferences. If you don't have established guidelines, we will craft a clean UI kit.

Backend API Specifications (If Existing)

If you operate an existing database or API, we require Swagger/OpenAPI documentation. If not, we will architect a turnkey backend on Node.js or Go.

The App Store & Google Play publishing pipeline

Mobile publishing is a meticulous compliance process. We take responsibility for meeting technical, security, and legal store regulations.

Step 1

Certificates & Provisioning

We generate Apple Distribution Certificates, Provisioning Profiles, and configure Google Play App Signing keys under your organization.

Step 2

Privacy Manifests & Disclosures

Apple and Google mandate explicit declarations of collected user telemetry, device permissions, and network endpoints. We assemble compliant security manifests.

Step 3

Internal Beta via TestFlight

Prior to general availability, builds are deployed to Apple TestFlight and Google Play Internal Testing tracks. Your team tests builds directly on physical hardware.

Step 4

Store Review & Verification

We submit applications to Apple and Google review teams. If reviewers request clarifications regarding App Store Guidelines, we address them directly to secure approval.

Step 5

Public Launch & Crash Monitoring

We integrate crash reporting systems (Sentry / Firebase Crashlytics) to monitor stability, maintaining a 99.8%+ crash-free user session benchmark.

Frequently asked questions about apps

Key technical and operational details regarding mobile application engineering with Lintelox.

Apple App Store reviews typically complete within 24 to 72 hours for initial submissions. Google Play reviews for newly created developer accounts can take 5 to 7 business days. We factor this timeframe into our delivery schedules and provision demo accounts for the reviewers.
React Native suits teams already working with JavaScript and TypeScript. Flutter is useful when a consistent interface across iOS and Android is a priority. The right choice depends on the product, required integrations, and the team’s experience; platform-specific Android features can be built with Kotlin.
Yes. We architect an offline-first data layer (using SQLite / MMKV local persistence). Users can navigate cached records, and any offline mutations are held in a local queue and synced to the cloud once connectivity resumes.
We integrate native notification channels: Apple Push Notification service (APNs) and Firebase Cloud Messaging (FCM). On the backend, we implement notification triggers for transactional alerts, order updates, direct messages, and scheduled marketing pushes.
Your company retains full ownership of the mobile client code, backend repositories, and UI designs. Applications are deployed directly under your organization's App Store and Google Play developer accounts.
Mobile Project Kickoff

Ready to launch your mobile application?

Share your product concept or existing specifications. We will respond within one business day with an architectural decomposition and delivery timeline.

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