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E-Cell OC

GreenBill — Your Smart Bill & Expense Assistant

The Problem Managing bills and expenses today is scattered and stressful. We get paper bills, PDFs, email invoices, and app notifications, often losing track of spending patterns. Existing apps either focus on banking or are too complex for everyday users. There’s a need for a single, simple system to track, organise, and understand all expenses from daily bills to subscriptions.

What GreenBill Does GreenBill is a mobile-first solution that uses OCR (Optical Character Recognition) and lightweight ML models to scan bills, extract key details (amount, date, category, merchant), and automatically log them. It goes beyond storage by acting as a personal financial assistant, connecting with apps we already use.

How it Works

  1. Smart Scanning – Snap a photo of any bill; OCR extracts details accurately.

  2. Automatic Categorisation – ML tags expenses (food, transport, utilities, shopping).

  3. Cross-App Integration – Syncs with UPI apps (GPay, PhonePe), food delivery, ride apps, and email receipts.

  4. Unified Dashboard – Displays monthly spend, recurring payments, and category breakdowns.

  5. Smart Reminders – Calendar alerts for bill due dates.

  6. Secure Cloud Storage – Backups via Google Drive/Dropbox.

Why GreenBill Matters Instead of juggling multiple apps, GreenBill gives users a single source of truth for spending. It’s useful for students, professionals, and families, helping them track, save, and plan effortlessly.

Future Vision

  • AI Insights – Personalised suggestions like “Reduce dining expenses by 20% next month.”

  • Smart Saving Goals – Set targets for gadgets, trips, or emergencies.

  • Shared Expenses – Split costs with friends/flatmates.

  • Green Impact Tracking – Track eco-friendly purchases to encourage sustainable spending.

Why I’m Building This As a student, I’ve struggled to manage personal expenses. Using my CS skills (OCR, APIs, ML), I can prototype GreenBill and test it with peers before scaling.

Next Steps

  • Prototype OCR + logging pipeline

  • Build a minimal Android app (Flutter/React Native)

  • Pilot with students for UX & accuracy feedback

Votes: 18
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Comments

  • Unique idea.. all the best, i really want to utilise your new idea
  • Great idea, will help me a lot managing my budget and expenses. Please just make it easy to use
  • Really impressive work! The concept is well thought out and beautifully executed — great attention to detail. Very impressive!
  • This is a great tool for people budgeting for the first time, which is basically every single college kid!

    The shared expenses part would especially come in handy a lot after hang-outs with friends and it’s time to settle accounts.

    A great addition would be to have a feature that allocates funds for SIPs that also increases with your income and keeps track of your investments as well. Overall, kudos on a great idea, Ritvik!
  • Great idea cant add more to it just try to make its UI easy to navigate
  • This is a really creative and well-thought-out idea! I especially liked how you identified a clear problem and provided a practical solution that feels achievable. One thing you could consider adding is more details about how you’ll implement it or measure its success — that would make your idea even stronger.
  • This seems like a highly relevant and timely solution, especially for students juggling complex financial responsibilities. The use of OCR and machine learning for automated expense tracking is an impressive feature. GreenBill’s emphasis on delivering a unified experience has strong potential to streamline budgeting. I’m eager to see how it evolves!
  • This looks like a highly relevant and timely solution, particularly for students managing complex finances. The integration of OCR and ML for automatic expense tracking is a significant feature. GreenBill's focus on a unified experience could simplify budgeting considerably. I look forward to seeing its development!
  • Wonderful initiative made!! Its an incredibly creative idea, and looks to solve the issues faced especially in todays digital era in being wary of spending our cash. Especially with the rise in use of digital softwares and pps for spending and recieving money, the need for a tool to automise the recording of expenditure is the need of the hour. The efficient use of latest technology makes this venture even more exciting to follow!
  • Greatttt…… If we could add a monthly budget feature, it would help us track how much we’ve spent and how much limit remains. Also, it’d be great if we could record the amount of cash we have on hand.
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