Fintrak

Jan 1, 2025 · 1 min read
projects

Fintrak is a personal expense tracking engine with a ₹0/month operational cost. Four n8n automation pipelines running in Docker handle the full workflow: send a receipt photo to a Telegram bot → OCR.Space extracts the text → a 12-category rule engine categorizes it → the expense logs to Google Sheets with a Google Drive receipt backup. A 9 PM IST cron sends a daily summary back to Telegram.

Architecture: Telegram Bot (UI) · n8n on Docker (Engine) · OCR.Space API (Extraction) · Google Sheets (Database) · Google Drive (Storage)

Key design principles: Frictionless UI (the interface lives where you already chat) · Zero monthly cost (free-tier APIs only) · Sovereign data (nothing touches a third-party server)

Stack: n8n · Docker · Telegram Bot API · OCR.Space · Google Sheets API · Google Drive API · JavaScript

N8n Telegram Google Sheets OCR Docker
Rupal Das
Authors
Rupal Das
Client Success & Technical Operations | SaaS | AI & Automation
Results-driven Client Success & Technical Operations professional with 9+ years of experience managing enterprise SaaS clients across Americas and EU markets. Proven expertise in end-to-end client onboarding, incident resolution, API integrations, and platform configuration using CI/CD pipelines. Skilled at translating complex technical requirements into measurable business outcomes through SQL-driven reporting and cross-functional collaboration. Currently advancing expertise in Generative AI for Business at IIM Lucknow, with applied focus on leveraging AI for Learning & Development and client enablement. Certified Scrum Master with a track record of improving SLA compliance, driving product adoption, and reducing churn.