Roadmap

What we are building and when

A transparent, public roadmap of FuelStack development across three phases -- from MVP to full AI-powered nutrition platform.

Phase 1 -- MVPIn Progress

Q2 2026 -- 8-10 weeks

17 features

Phase 2 -- AI-AssistedUpcoming

Q3 2026 -- 4-6 weeks

12 features

Phase 3 -- AI-PoweredUpcoming

Q4 2026 -- 4-6 weeks

10 features

Phase 1 -- MVP

In Progress

Q2 2026 -- 8-10 weeks

Core calorie/macro tracking, meal plan loading, reminders, and smart defaults. Everything you need to start tracking effectively.

Firebase Auth (Email + Google + Apple)
User Onboarding & Goal Setup Wizard
Dashboard with Daily Progress Ring
Food Search (FatSecret 1.9M+ foods)
Barcode Scanning
Food Logging (search, recent, favourites, quick-add)
Custom Food Creation
Daily Food Log with Macro Totals
Basic Meal Plan Creation (manual)
Meal Plan Activation & Daily Timeline
Local Push Notifications (prep + meal reminders)
Settings (profile, notifications, units, theme)
Dark Mode + Light Mode
Smart Defaults: Auto Macro Targets from Biometrics
Smart Defaults: Time-Aware Food Suggestions
Smart Defaults: Smart Serving Sizes
Smart Defaults: Meal Repetition Detection

Phase 2 -- AI-Assisted

Upcoming

Q3 2026 -- 4-6 weeks

AI meal plan generation, food swaps, natural language logging, recipe builder, and weight analytics. The intelligence layer comes alive.

Recipe Builder with Per-Serving Calculation
Meal Plan Import (JSON from coach)
Weight Tracking with Trend Chart
Weekly Macro Average Analytics
Adherence Scoring
Daily Summary Notifications (FCM)
Logging Nudge Notifications
Copy Meals from Previous Days
AI Meal Plan Generator (Claude Sonnet)
AI Food Swap Suggestions (Hybrid + Claude Haiku)
Natural Language Food Logging (Claude Haiku)
AI Weekly Review & Insights

Phase 3 -- AI-Powered

Upcoming

Q4 2026 -- 4-6 weeks

Photo-to-log via Spike AI, conversational nutrition coach, adaptive TDEE, progress photos, and premium features.

AI Photo-to-Log (Spike Nutrition AI)
AI Nutrition Coach (Conversational, Claude Sonnet)
Adaptive TDEE Algorithm
Progress Photos with Date-Stamped Gallery
Body Measurement Tracking
Training Day / Rest Day Calorie Switching
Data Export (CSV)
Hydration Tracking + Reminders
Social: Share Meal Plan Templates
Widget Support (iOS 17+ / Android)
Tech Stack

Built with modern, proven tools

Expo React Native

Mobile App

NestJS

API Layer

PostgreSQL + Drizzle

Database

Redis

Caching

Firebase

Auth + Push Notifications

Claude API (Anthropic)

AI Features

Spike Nutrition AI

Photo Recognition

FatSecret API

Food Database

Cost Model

Transparent cost projections

Estimated monthly infrastructure and API costs at different user scales.

Scale
Claude API
Spike API
Total AI Cost
1,000 MAU
~$30/mo
~$15/mo
~$45/mo
10,000 MAU
~$200/mo
~$150/mo
~$350/mo
50,000 MAU
~$800/mo
~$750/mo
~$1,550/mo

At 10k MAU with 10% premium conversion at $6.99/mo, subscription revenue is ~$6,990/mo vs ~$350/mo AI cost. ~91% gross margin.