HAVEN
HealthNutritionAIFitnessB2B2C
Last updated: January 24, 2026
healthlive
App Overview
HAVEN is a weekly calorie nutrition app that challenges traditional daily restrictions by implementing a flexible 7-day budgeting system.
Key Features
- •Weekly calorie budgeting instead of restrictive daily limits
- •Daily micro-check-ins: "Did you have any unlogged food or snacks last night?"
- •Pre-planned cheat day system with automatic weekly calorie adjustments
- •AI-powered food recognition and nutrition estimation
- •Comprehensive food logging with manual and AI-assisted entry
- •Self-reflection: Understanding and creating a better relationship with food habits
- •Auto Budget Adjustment: Haven understands that life happens and you should not be punished for living life
- •Accountability Coaching: Work with AI Coach to better your habits and keep you accountable to hit your goals faster
Tech Stack
React NativeExpoTypeScriptSupabase (PostgreSQL, Auth, RLS, Edge Functions)OpenAI GPT-4 Vision APIOpenAI GPT-4o-miniReact NavigationExpo Push Notifications (planned)Supabase Realtime
Challenges & Learnings
- •Paradigm shift: Weekly vs daily calorie thinking requires user education
- •Designing baseline week UX that motivates without judgment
- •AI food recognition accuracy and nutrition estimation
- •Real-time features (messaging, updates) with offline capability
- •Comprehensive security with Row Level Security for multi-tenant data
Quick Links
Development Timeline
Conceptualization
December 10, 2025
Development
December 13, 2025
Launch
April 18, 2026
Updates & Iterations
Completed comprehensive UI redesign with new design system (Teal #206E6B)
Implemented 7-day baseline week tracking with no-judgment learning period
Built dual authentication system for Trainers and Clients
Created AI-powered food recognition using GPT-4 Vision API
Developed trainer-client invite code system and relationship management