KHD
KHD Labs Mobile & Web Studio

We build mobile and web applications designed for performance, resilience, and scale.

KHD Labs is a boutique engineering studio. When your cross-platform app drops frames, your offline sync corrupts state, or your backend is struggling under load—we diagnose the root causes and rebuild with precision.

< 0.9s
Median Cold Launch
120 FPS
Display Target
99.98%
Crash-Free Sessions
100%
Senior Staff Led
Common Engineering Bottlenecks

Issues We Regularly Diagnose and Resolve

Most performance failures stem from predictable architectural trade-offs. Select any issue below to read our technical breakdown.

01 < 0.5% hitch rate

"The app stutters whenever users scroll"

Garbage collection sweeps and unmemoized allocations exceeding the 8.3ms frame budget.

02 0 data loss

"Field data vanishes when workers lose connection"

Last-Write-Wins timestamps overwriting server records during reconnection bursts.

03 90% cost reduction

"Monthly cloud bills are disproportionate to user count"

Premature microservices and inter-service transit fees adding unnecessary overhead.

04 Sub-900ms TTI

"Mobile web visitors bounce before the page loads"

Large JavaScript bundles blocking the main browser thread during hydration.

05 Zero memory kills

"The app silently restarts when switching between apps"

iOS Jetsam terminating background processes that exceed dirty memory thresholds.

06 -34% battery drain

"The app drains battery quickly during active use"

Frequent background socket heartbeats preventing the cellular radio from idling.

Selected Work

Case Studies & Architecture Breakdowns

Mobile Systems & Offline Sync / Fleet Logistics Corp
Production Verified

LogiRoute: 120Hz Dispatch & Field Sync Engine

Re-architected a courier application that crashed when drivers entered subterranean loading bays. Replaced whole-table JSON replication with an idempotent SQLite WAL delta stream.

Offline Data Loss
4.8% → 0.00%
120Hz Hitch Rate
34.1% → 0.3%
Cold Launch Time
4.2s → 0.78s
Key Technical Interventions
  • Custom native module for atomic SQLite delta-stream writes
  • Deterministic offline intent sync queue with causal vector parent tracking
  • Native image downsampling pipeline reducing RAM usage from 480MB to 95MB
Stack: React Native Native Swift SQLite WAL Go Backend PostgreSQL
Web Platform Engineering / Consumer Retail
Production Verified

Aura Commerce: Mobile Web Bundle Diet & Islands

A mobile checkout platform suffering 62% bounce rates on mobile cellular connections due to a 4.1MB single-page hydration block. Replaced with Astro islands and selective hydration.

Mobile JS Shipped
4,120 KB → 42 KB
Time-to-Interactive (4G)
7.1s → 0.85s
Checkout Conversion
1.8% → 3.4%
Key Technical Interventions
  • Eliminated barrel-file import cascades across 84 catalog components
  • Islands architecture hydrating cart drawer and checkout widgets strictly on user intent
  • Edge-cached static catalog with zero client JavaScript runtime overhead
Stack: Astro Tailwind CSS TypeScript Edge Workers Stripe Elements
Native iOS Engineering / MedTech Innovations
Production Verified

PulseMetrics: Real-Time BLE Medical Companion

A medical peripheral app that was repeatedly terminated by iOS Jetsam when patients switched between camera and monitoring. Engineered a zero-alloc CoreBluetooth state preservation engine.

Background Jetsam Kills
22.4% → 0.05%
BLE Packet Loss
7.2% → 0.01%
App Store Approval
Rejected 3x → Approved 1st Pass
Key Technical Interventions
  • Darwin kernel memory footprint lowered below 45MB to avoid per-process Jetsam limits
  • Encrypted local scratch buffer for instantaneous form restoration upon resume
  • Compliance overhaul meeting Apple Guideline 5.1.1 requirements
Stack: SwiftUI CoreBluetooth Combine Keychain Security
Engineering Blog

Recent Technical Articles

Architecture / Offline-First & SQLite
9 min read

Offline Sync Is Never 'Just SQLite': Battle Scars from Multi-Device Conflict Resolution

Why slapping WatermelonDB or raw SQLite on an app doesn't solve offline sync. How edge-case race conditions wipe out customer data, and how we architect idempotent delta streams.

Issue: App corrupts data or loses records when network drops
0 data loss across 1.4M offline field transactions
Read article →
Architecture / Backend & Cloud Economics
11 min read

The $14,000 Cloud Bill That Should Have Been a Single Box: Unwinding Premature Microservices for Mobile Backends

How a 6,000-user mobile product ended up running 14 Kubernetes microservices, paying AWS astronomical NAT gateway bills, and how we collapsed it into a $120/mo monolith that cut latency by 80%.

Issue: Cloud infrastructure costs burning runway before product-market fit
AWS spend: $14,200/mo → $120/mo with 78ms lower p95
Read article →
Web Platforms / Web Vitals & Bundle Dieting
7 min read

Why 4MB JS Bundles Kill Mobile Web Conversion: Real-World Bundle Dieting

Most mobile web visitors bounce before your React bundle hydrates. Here is how we diagnose bloated chunks, kill accidental barrel-file imports, and cut TTI from 6.8s to 900ms on 4G.

Issue: Mobile web bounce rates are high and Lighthouse scores are red
Time-to-Interactive on 4G: 6.8s → 880ms, +22% conversion
Read article →
How We Work

Our Operating Model

We operate as an embedded senior engineering partner rather than a conventional agency.

01

Senior-Led Execution

The engineers who scope the architecture write the code. We do not pass work to junior subcontractors or account managers.

02

Full Code Ownership

All code is developed directly in your repositories with comprehensive documentation. Zero proprietary studio lock-in.

03

Hardware-Verified Quality

Every build is benchmarked against real, low-end mobile devices and tested for memory, battery, and frame consistency.

Direct Consultation

Tell Us About Your Project

Inquiries are reviewed directly by our principal mobile and systems engineers within one business day. We inspect your repository or technical brief before scheduling an exploratory call.