Software Development & Technology
Building Solutions. Creating Legacy.
Boutique software development — mobile apps, web platforms, and AI, built to last.
Boutique software development — mobile apps, web platforms, and AI, built to last.
SJK & Sons LLC® is a boutique software development company based in Connecticut. 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, launched on the App Store in July 2026 — 375 mobile screens, 375 web dashboard tools, a 15-screen Apple Watch app, 25 home screen widgets, 34 languages, and AI powered by Claude (Anthropic) built into the experience. A comprehensive health & wellness platform built for iOS.
Complete, production-ready products — mobile app, web dashboard, backend, and AI — from a single team.
A comprehensive AI health & wellness platform on the App Store — live July 2026. 375 mobile screens + 15 Apple Watch screens covering nutrition, GLP-1 management, women’s health (34 screens), men’s health (27 screens), 86 condition-specific nutrition programs (trackers), environmental health (cosmetics, air quality, water & clothing safety scanners), mental wellness, fitness & competition prep, biohacking, habit tracking, biological age, and 120-biomarker lab tracking with trend charts and retest reminders. Also includes multi-week workout programs, micronutrient tracking from your food log, and data export & import. A built-in eating-disorder-safe mode hides calorie and weight-loss numbers. AI SmartInsightCard + floating AI coach on every single screen. Pinch-to-zoom on all 375 screens. A dedicated Clinic Connect B2B layer lets weight-loss clinics and GLP-1 providers enroll and manage patients directly inside the platform, with a staff-facing Clinic Portal for rosters and outcomes. Start with a 14-day free trial, then choose from three paid plans. GritLeanPulse is a consumer wellness app, not a medical device.
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 — end to end.
Production-ready web dashboards and SaaS platforms built with Next.js and Supabase. Real-time data, authentication, responsive design.
Claude-powered AI companions, food recognition cameras, voice logging, automated analysis, and custom AI endpoints built in from day one.
Deep expertise in HealthKit, biomarker tracking, GLP-1 management, CGM integration, wearables, and in-depth wellness feature sets.
Live in production on GritLeanPulse: clinic-code patient enrollment, a staff-facing Clinic Portal with patient rosters and risk flags, secure provider messaging, and white-label program tools for weight-loss clinics, GLP-1 prescribers, and wellness businesses.
App Store positioning, pricing architecture, RevenueCat billing setup, go-to-market planning — not just code, but a 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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