Welcome to Coach Fatso.
A coach that meets you where you are. Track what you eat, build better habits, and stay consistent with support that fits real life. No perfection required.
Hey there ✌
Just talk. I'll help you track it.
Talk to Coach Fatso
Like a phone call. You speak, he listens and answers aloud. No typing required.
Live two-way voice requires the AI server and microphone permission. Text chat is available below.
Common foods can be logged offline. With AI coaching enabled, Coach Fatso can estimate unfamiliar foods and everyday portions; all nutrition values are approximate and can vary by preparation and serving size.
Today's dashboard
Small actions, consistent results.
Meals today
Weight & progress
Your plan
Edit your details and goals anytime.
Nutrition target
Personalized estimateYour details
Optional WHOOP connection
Sleep, recovery and workouts can help tailor your coaching. WHOOP is never required.
Live WHOOP sign-in requires server setup, developer credentials and your consent.
AI coaching & privacy
With AI coaching enabled, your messages, targets and optional WHOOP summary are sent to the AI provider for replies. Live calls also send microphone audio during the call. With it off, local meal, water and workout commands still work.
Help us improve the app
Report a problem, suggest a feature, or tell us what you think. Messages go privately to the developer.
Settings & data
Your profile, chat and food logs are stored in this browser on this device. If you change devices, these won't sync automatically.
To install on Android or iPhone, host this app at an HTTPS address.
Help us improve the app
Something not working, or have an idea that would make Coach Fatso better? We'd love to hear it.