Three apps crammed into one. Done right.
FuelStack was born from the frustration of juggling a calorie tracker, a meal plan spreadsheet, and a handful of phone alarms. We fuse detailed nutrition tracking, structured meal planning, and AI-powered coaching into a single, beautiful app.
1.9M+
Foods in Database
3
Data Sources
<30s
Target Log Time
91%
Projected Gross Margin
Make nutrition tracking feel like a superpower, not a chore
Most nutrition apps fall into two camps: dead-simple calorie counters that lack depth, or overly complex tools that overwhelm. FuelStack sits in the sweet spot -- detailed enough for serious athletes, intuitive enough for anyone starting their fitness journey.
By layering AI intelligence on top of solid tracking fundamentals, we turn passive data logging into active nutrition coaching. Your app doesn't just record what you ate -- it helps you decide what to eat next.
Macro Tracking
Protein, carbs, fat with visual progress
AI Intelligence
Contextual coaching and meal generation
Adaptive TDEE
Auto-adjusting calorie targets from data
Meal Plans
Structured plans with prep reminders
What guides every decision we make
Adherence-Neutral
No shaming, no red screens for missed targets. We use warm-to-cool spectrums that inform without judging. Your journey, your pace.
Intelligence, Not Complexity
AI should feel like a helpful friend, not a science experiment. Smart defaults, contextual suggestions, and insights that actually make sense.
Speed First
Logging a meal should take under 30 seconds. Every tap matters. We obsess over reducing friction in the daily tracking loop.
Privacy by Design
Your nutrition data is deeply personal. We're POPIA compliant, GDPR-aware, and never sell your data. Your body, your business.
Evidence-Based
Every AI recommendation is grounded in sports nutrition science. No fads, no bro-science. Just what the research actually says works.
Built for South Africa
South African food names, brands, and culture baked in from day one. Biltong, bunny chow, rusks -- we speak your food language.
From frustration to FuelStack
The Spark
Ruan van Vuuren, frustrated with juggling MyFitnessPal, a Google Sheet meal plan, and random phone alarms for meal prep, sketched the first FuelStack wireframes.
Spec & Design System
Full product specification completed. Design system established with the iconic lime-on-zinc aesthetic. Five core screens designed and prototyped.
Phase 1 Development
Expo React Native + NestJS backend development begins. Core tracking, food database integration via FatSecret, and meal plan system underway.
MVP Launch
Phase 1 release: Full macro tracking, barcode scanning, meal plans with prep reminders, smart defaults, and the adherence-neutral dashboard.
AI-Assisted Features
Phase 2: AI meal plan generator, smart food swaps, natural language logging, and weekly AI reviews powered by Claude.
Full AI Power
Phase 3: AI Nutrition Coach, photo-to-log via Spike AI, adaptive TDEE algorithm, and premium feature suite.
Built by someone who actually tracks macros
FuelStack is created by Ruan van Vuuren -- a software engineer, gym-goer, and meal prepper based in South Africa. After years of bouncing between MyFitnessPal for logging, Google Sheets for meal plans, and phone alarms for prep reminders, he decided to build the app he actually wanted to use.