SJK & Sons LLC® is a boutique software development company based in Wallingford, CT. We design and build mobile applications and web platforms that solve real problems for real people.
We approach every product the same way we built our own: with obsessive attention to detail, deep domain research, and a commitment to getting it right — not just getting it done.
Our flagship product, GritLeanPulse, is the most comprehensive health optimization platform on the App Store. It is the proof of concept for everything we build for clients.
We build complete, production-ready products — mobile app, web dashboard, backend, and AI — from a single team.
The most comprehensive GLP-1 & metabolic health platform on the App Store. 239 screens covering GLP-1 medication management, women’s health, men’s health, AI nutrition coaching, and advanced biomarker tracking — all in one place.
More products in development — building the future of health technology.
From concept to App Store — we handle the entire stack so you don’t have to hire five teams.
Native iOS apps built with React Native and Expo. Apple Watch integration, HealthKit, push notifications, App Store submission — the full process handled end to end.
Production-ready web dashboards and SaaS platforms built with Next.js and Supabase. Real-time data, authentication, and responsive design that works everywhere.
Claude-powered AI companions, food recognition cameras, voice logging, automated analysis, and custom AI endpoints that make your product intelligent from day one.
Deep expertise in health data — HealthKit, biomarker tracking, GLP-1 medication management, CGM integration, wearables, and clinical-grade feature sets.
White-label platforms and clinic-connect features for healthcare providers, wellness businesses, and health tech companies. HIPAA-friendly architecture by design.
App Store positioning, pricing architecture, RevenueCat billing setup, go-to-market planning, and launch readiness — not just code, but a complete product that sells.
Have an idea for an app? Ready to take your product from concept to launch? We’d love to hear from you.
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