Sys · Online
◆ SIMNETIQ / 02 / C-01NATIVE · CROSS-PLATFORMCAPABILITY BRIEF
C-01NATIVE · CROSS-PLATFORM

Mobile & Desktop

Native clients that ship.

Production-grade applications for iOS, Android, macOS, Windows, and Linux. SwiftUI, Jetpack Compose, WinUI 3, .NET, and modern cross-platform runtimes — always chosen for the right reason, never for the easy one.

▸ Brief

PlatformsiOS · Android · macOS · Windows · Linux
Primary stackSwift · Kotlin · C# · Tauri
Typical engagement6–16 weeks

◇ Scope

Services

From single-platform MVPs to multi-OS product suites with shared backends. We engineer for longevity: native performance, sensible architecture, and store-ready compliance from day one.

S-01

iOS / iPadOS Applications

Native SwiftUI + UIKit. HIG-compliant, RevenueCat / StoreKit integration, TestFlight delivery, App Store submission management end-to-end.

S-02

Android Applications

Jetpack Compose, Material 3, Google Play policy compliance. Coroutines, Hilt, Room, ExoPlayer — whichever primitives the product actually needs.

S-03

Desktop — macOS

Native SwiftUI or AppKit for macOS. Menu bar utilities, full document-based apps, Mac App Store or notarised DMG distribution.

S-04

Desktop — Windows

WinUI 3, WPF, and .NET 8+ for modern Windows experiences. MSIX packaging, Microsoft Store distribution, or signed standalone installers.

S-05

Desktop — Linux & Cross-Platform

Tauri, Electron, Qt, and Flutter Desktop for single-codebase delivery across macOS, Windows, and Linux when the product warrants it.

S-06

Store Submission & Release Ops

App Store, Google Play, Mac App Store, Microsoft Store. Metadata, screenshots, review responses, phased rollouts, crash triage.

◇ Instrumentation

Technology stack

The full surface we deploy across this capability. Chosen per project — not every tool fits every brief.

T-018 items

iOS / Apple

SwiftSwiftUIUIKitCombineCore DataStoreKit 2WidgetKitXcode Cloud
T-028 items

Android / Google

KotlinJetpack ComposeMaterial 3CoroutinesHiltRoomWorkManagerPlay Billing
T-035 items

macOS

SwiftUIAppKitCombineSwift ChartsMac Catalyst
T-046 items

Windows

WinUI 3WPF.NET 8C#MSIXMAUI
T-055 items

Cross-Platform

TauriElectronFlutterQt 6React Native
T-066 items

Distribution

App Store ConnectGoogle Play ConsoleMac App StoreMicrosoft StoreFastlaneTestFlight

◇ Engagement

Pricing

Starting ranges in GBP. Final quotes depend on scope, timeline, and support level. Every engagement is a signed SOW with fixed milestones.

TIER · 01

Mobile

FROM £1K

iOS + Android from a single engagement.

  • Native iOS (SwiftUI) + Android (Compose)
  • Shared product spec and design system
  • Auth + payments + analytics wiring
  • Store submission on both platforms
Request brief →
TIER · 02◆ Recommended

Mobile + Desktop

FROM £3K

Mobile plus desktop clients on macOS and Windows.

  • iOS + Android native clients
  • macOS (SwiftUI) + Windows (WinUI 3)
  • Shared backend and design language
  • Store submission across every platform
Request brief →
TIER · 03

Full Ecosystem

CUSTOM

Apps, website, and bots shipped as one integrated product.

  • Mobile + desktop native clients
  • Marketing site + product platform
  • Telegram / Slack / Discord bots
  • Backend, auth, billing, automation
Request brief →

◇ Contact Us

Open a channel.

Briefs are reviewed within one working day. Tell us the objective, timeline, and constraints — we'll come back with a scope, price, and a plan.