NATIVE ENGINEERING · KOTLIN · SWIFT

High-performance Native iOS and Android Development

We design and build native apps in Kotlin and Swift on architectures that scale.

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Built in

On call

WebRTC

Latency42ms

Render60fps

NATIVE ENGINEERING

Real performance on every platform

Kotlin, Swift, Jetpack Compose, and SwiftUI on Clean Architecture. Every layer measured, every interaction tuned for the device hardware.

60 and 120 fps rendering, done right

Direct access to Metal on iOS and Vulkan on Android, running on the device's native engine. Lists with thousands of items at 120fps on ProMotion and native animations measured with Instruments and Android Studio Profiler.

UX the system recognizes as its own

Dynamic Material 3 on Android and Human Interface Guidelines on iOS. Haptic gestures, native transitions, widgets, Live Activities, Quick Settings, and Siri shortcuts integrated natively from the system.

Full hardware, no intermediate layers

Camera with AVFoundation and CameraX, biometrics with Face ID and BiometricPrompt, NFC, BLE, ARKit, and ARCore. Access to Core ML and NNAPI for on-device inference with no network latency.

iOS and Android from day one

Immediate adoption of every Apple and Google release: Live Activities, Predictive Back, App Intents, App Clips, Wear OS, and watchOS. We work against the betas before GA.

REAL-TIME COMMUNICATIONS

VoIP, SIP, and WebRTC on a native stack

We build real-time voice and video clients with deep iOS and Android integration. PJSIP, sip.js, native WebRTC, and the operating system telephony layer working as one piece.

RTC

Native SIP clients in production

IP telephony apps on PJSIP for iOS and Android. Registration, INVITE, REFER, DTMF, attended transfer, conferences, and NAT traversal with ICE, TURN, and STUN. Integration with Asterisk, FreeSWITCH, and Kamailio PBXs.

PJSIP
sip.js
Asterisk
Kamailio
Opus

RTC

Native WebRTC for voice and video

PeerConnection on the official WebRTC SDK for iOS and Android. SDP negotiation, ICE restart, simulcast, and SVC with Opus, H.264, VP8, and VP9 codecs. In-house or managed SFUs (mediasoup, Janus, LiveKit) for group calls.

WebRTC
mediasoup
LiveKit
H.264
VP9

RTC

CallKit and ConnectionService integrated

Calls that appear on the lock screen, in the system history, and on Bluetooth car kits. CallKit and PushKit on iOS, ConnectionService and Telecom on Android. Background calls, push-to-call, and answering from AirPods or the watch.

CallKit
PushKit
ConnectionService
Telecom

RTC

Audio routing and network resilience

AVAudioSession and AudioManager configured for real calls: headset switching, interruption handling, hands-free mode, echo, and noise suppression. Adaptive jitter buffer, FEC, PLC, and transparent reconnection over unstable mobile networks.

AVAudioSession
AudioManager
AEC
Jitter buffer

Real calls with production-grade metrics.

CRITERIA

When native is the right answer

Native wins when performance, system integration, or hardware are the product. These are the scenarios where we choose it without hesitation.

Real-time voice and videoVoIP, video calls, and live streaming where CallKit, ConnectionService, and native WebRTC make the difference over any bridge.
Advanced hardwareBiometrics, NFC, BLE, camera with real-time processing, ARKit, and ARCore. Full access without waiting for a plugin to expose it.
Critical performanceGames, motion graphics, live editors, and dashboards with thousands of events per second. 60 and 120 fps measured on every release.
Deep system integrationWidgets, Live Activities, App Intents, Quick Settings, Wear OS, and watchOS. Products that live inside the operating system.

SUCCESS STORIES

Companies that trust our team

Products in production where native performance and real-time communication make the difference. Apps with voice, video and real-time communications for media, sports and industrial clients.

La Liga

Fermax

FREQUENTLY ASKED

What technical teams ask

What we put in writing before starting a native project.

Kotlin Multiplatform or two separate codebases?
Depends on the case. KMP for domain logic, networking, and persistence shared between iOS and Android, keeping UI 100% native with Compose and SwiftUI. Two codebases when the release cycle or team justifies it. We decide with you during the architecture phase.
How do you integrate WebRTC and SIP with an existing backend?
We connect to SIP PBXs (Asterisk, FreeSWITCH, Kamailio) and SFUs (mediasoup, Janus, LiveKit) without rewriting your platform. If you need a BFF, signaling gateway, or presence service, we build it in Spring Boot, NestJS, or Go.
Who maintains the app after release in the stores?
Your team, ours, or both. Agreed SLA, monitoring with Firebase Crashlytics, Sentry, and OpenTelemetry, and on-call for incidents. Semantic versioning and automated release pipeline in App Store Connect and Play Console.
How do you ensure quality on every release?
Unit tests with XCTest and JUnit, UI tests with XCUITest and Espresso, snapshot testing, contract tests against the backend, and pipelines in GitHub Actions with SonarQube and Detekt. Every PR goes through the same chain before reaching TestFlight or internal track.
NDA, intellectual property, and source code?
NDA before the first technical meeting. Repository in your organization from day one. All IP belongs to the client, no lock-in, and no private libraries that depend on us.

TECHNOLOGIES

Technology stack

Cutting-edge native stack on Clean Architecture, modularized by feature. Every layer designed to support real load, evolution, and continuous delivery on App Store and Google Play.

Android · Kotlin