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About KD

Small studio.
Production grade.

Kristo Designs LLC is a development studio based in Winchester, Virginia — built on the principle that small businesses deserve enterprise-quality software without the enterprise invoice.

The Studio

We specialize in Progressive Web Apps and data-driven portals — multi-role systems with offline capability, push notifications, and mobile-first UX. If your business runs on a spreadsheet and you've outgrown it, we build what comes next.

Every project gets the full engineering treatment: proper database design, token-authenticated REST APIs, service worker caching, and real deployment pipelines. The kind of foundation that makes software actually work for years — not months.

We write every line ourselves. No outsourcing, no contractors, no mystery code. You work directly with us from first call to last commit.

Templates are technical debt in disguise. A theme that saves $2,000 now costs $20,000 in customization debt later. We don't use them.

Real device testing is the only honest test. Browsers lie. Emulators lie. We test on physical iOS and Android before calling anything done.

One fix at a time. Batch-fixing without testing between is how you trade one bug for three. We fix, confirm, move on.

You own your code. Complete files, no lock-in, no subscription fees for code we wrote for you.

Support doesn't end at launch. Software is a living system. We stay available because requirements change and bugs are real.

Technical Expertise

Expert across the full stack.

Backend & Database

PHP 8 / PDOExpert
MySQL / Schema DesignExpert
REST API DesignExpert
Auth & Session ManagementExpert

Frontend & PWA

JavaScript ES6+Expert
Framework7Expert
Service Workers / PWAAdvanced
CSS / Responsive DesignExpert

DevOps & Deployment

LAMP / cPanel / GoDaddyExpert
Deploy AutomationAdvanced
Performance OptimizationAdvanced

Integrations & Platforms

OneSignal Push NotificationsExpert
WebViewGold (iOS/Android)Advanced
UX / Product DesignAdvanced
By the Numbers
0+
Live PWA deployments
100%
Custom code — zero templates
<1s
Average API response time
540
Winchester, VA area code
Quick Facts
kristo-designs.json
{
  "studio": "Kristo Designs LLC",
  "location": "Winchester, VA, USA",
  "phone": "540-358-5159",
  "email": "sales@kristodesigns.com",
  "availability": "By appointment",
  "specialization": "PWA · Portal · Mobile",
  "templates": false,
  "post_launch_support": true,
  "remote_work": true
}
Work Together

Let's build together.

Get a Free Quote →
540-358-5159 · By appointment