Platform: Botpress + Google Sheets + WhatsApp Role: Full-stack Bot Developer | AI Workflow Designer

Dumbbell AI needed a WhatsApp-based fitness coach that could:

Automatically recognize users via phone number

Detect subscription status (Basic / Pro / Trial / Cancelled)

Allow Pro users to send food photos for calorie estimation

Guide new users through onboarding (meal plans, goals, etc.)

Sync all activity with a structured Google Sheets backend

Stay strictly on-topic (nutrition + fitness only)

Their internal Botpress build had stalled. Integration with Sheets wasn’t stable. Visual recognition didn’t exist yet.

Rebuilt the entire conversation flow in Botpress, optimized for WhatsApp’s stateless model

Created a smart user recognition system using phone numbers + Google Sheets lookup

Built a Pro-only visual calorie estimation feature using Botpress’s Vision Agent

Engineered a flexible Google Sheets sync layer using Apps Script (read/write)

Handled calorie logging, onboarding triggers, and fallback logic

Layered in tier-based responses (Basic users get upgrade prompts)

Ensured the bot could gracefully reject off-topic questions

Debugged and fixed WhatsApp-specific payload issues

Implemented fallback messages for low-confidence image descriptions

Added detailed calorie estimates using custom prompt engineering

Laid the foundation for a memory feature (currently in progress)

A cross-platform, AI-powered chatbot that feels personal, responds visually, and scales with Dumbbell AI’s growing user base. It works across WhatsApp and Botpress Emulator — and updates the backend in real time.

Offering custom AI chatbot development for any use case — from idea to launch, fully tailored to your brand.