Zyvarah LogoZyvarah

Service • Mobile Engineering

Mobile App Development
Engineered for Harsh Reality

We build native and cross-platform apps that hold up outside a controlled demo — on a noisy factory floor, on a spotty cellular connection, in the hands of real users who need reliable utility.

Native iOS & Android • Flutter • React NativeOffline-First ArchitectureActive on App Store & Play Store

Capabilities

Apps Built for How People Actually Work

A lot of apps look shiny in a Figma mock and crash the moment someone drives into a tunnel or uses an older device. We engineer resilience, 60 FPS thread stability, and offline local sync from day one.

React Native CLI • Native Architecture

Zero-Jank Cross-Platform Engine

Device Telemetry (iOS / Android)STABLE
UI Thread
60.0 FPS
Zero frame drop
JS Thread
59.8 FPS
Hermes Engine v0.12
Memory Footprint
38.4 MB
Leak-free ARC
Cold App Launch
0.68s
Native splash screen
Hardened Production Stack

We build with React Native CLI (bare workflow) instead of managed bloat, giving direct access to C++ TurboModules and native Swift/Kotlin APIs.

NativeModules/TurboMath.ts
TypeScript • Strict
// High-performance trigonometric kernel executed natively on device
import { TurboModuleRegistry } from 'react-native';

interface Spec extends TurboModule {
  computeGCodeCycle(tool: ToolSpec, rpm: number, feed: number): Promise<string[]>;
}

export const NativeMath = TurboModuleRegistry.getEnforcing<Spec>('TurboMath');

export async function executeCNCVector(params: CNCInput) {
  // Bypasses JavaScript bridge via synchronous JSI C++ call (< 1ms)
  return await NativeMath.computeGCodeCycle(params.tool, params.rpm, params.feed);
}
Compiled with JSI / C++ TurboModulesApple & Android Review Compliant

Engineering Disciplines

Native and cross-platform mobile standards maintained across every build.

Native iOS & Android

Native Swift and Kotlin development targeting maximum battery life, zero frame drops, and direct device sensor integration.

High-Performance Cross-Platform

Unified Flutter and React Native architectures that compile to clean native binaries without runtime lag.

Offline-First Engine

Local SQLite/WatermelonDB storage with conflict-free replication that functions with zero bars and reconciles automatically.

Fluid 120Hz Micro-Interactions

Hardware-accelerated gesture systems and tactile feedback that feel natural and snappy on high-refresh displays.

Store Compliance & CI/CD Pipelines

Automated Fastlane pipelines, TestFlight distribution, Apple Human Interface compliance reviews, and Google Play console compliance from alpha to global release.

Featured Case Study

CNC for U • Industrial Math Engine

CNC machinists required a specialized offline mathematical calculator for machining coordinates. Built entirely offline-first, the app executes heavy geometric calculations instantly on-device without network roundtrips.

CNC FOR U • ENGINE v2.4 LIVE
Live on Google Play
Select Macro Operation
Thread Milling CycleCALCULATED
Spindle Speed
4200 RPM
Cutting Feed
850 mm/min
Target Depth (Z)
-12.5 mm
Active Tooling
6.0mm Solid Carbide Pitch Cutter
Production Architecture
  • React Native CLI Offline Mathematical Engine
  • RevenueCat Global In-App Purchase Paywall
  • Client-Side PDF Technical Blueprint Generator
CNC-FOR-U • NC Code Preview
1O1004 (CNC-FOR-U: THREAD MILL M16x1.5)
2G21 G90 G40 G80 G49 (Metric / Absolute)
3G00 G28 Z0.0 (Retract to home)
4T04 M06 (Tool: 6mm Thread Mill)
5S4200 M03 (Spindle CW 4200 RPM)
6G00 X0.000 Y0.000 (Rapid to Center)
7G43 H04 Z5.000 (Apply Tool Offset)
8G01 Z-12.500 F850 (Plunge to Depth)
9G41 D04 X-5.750 Y0.000 (Cutter Comp)
10G03 X5.750 Y0.000 I5.750 J0.000 Z-11.750
11G03 X-5.750 Y0.000 I-5.750 J0.000 Z-11.000
12G40 G01 X0.000 Y0.000 (Cancel Comp)
13G00 Z25.000 M09 (Retract / Coolant Off)
14M30 (End of Program)
ISO / Fanuc 0i Compatible Format100% Offline Generation

"I needed a G-code generator app, not something off the shelf. The app works exactly how a machinist would expect it to."

— Udhayakumar, Founder • CNC for U

Delivery Pipeline

Our 4-Stage Build Cycle

Stage 1

Technical Scoping

We audit operating conditions, offline edge cases, target hardware, and device sensor constraints.

Stage 2

Architecture & Wireframes

We structure the state management, local database schema, and test-first API contracts.

Stage 3

Sprint Execution

Clean TypeScript and Dart builds with automated test coverage on real iOS and Android hardware.

Stage 4

Store Submission & Launch

End-to-end certification handling on App Store Connect and Google Play Developer Console.

Core Tooling

Mobile Technology Standards

FlutterReact NativeSwiftKotlinFirebaseGraphQLNode.jsSQLiteFastlane

Direct Communication

Have an App That Needs to Actually Work?

Talk to the engineers writing the code, not an account manager guessing at technical capabilities.