Repairwala: a voice-first job book for small repair shops, with local AI

Description and use

Repairwala is a voice-first Android app that lets small repair shops record jobs in Hindi, auto‑generate job cards, and send WhatsApp voice notes with UPI QR codes for exact payment, reducing disputes and improving cash flow.

Problem

Small repair shops lack written records, leading to disputes, forgotten histories, and delayed payments.

Outcome

The app creates a digital job book, automates record-keeping, and streamlines payment, reducing disputes and improving repeat business.

Workflow

• Take photos of machine, rating plate, and customer
• Speak job details in Hindi
• App sends audio to laptop
• Whisper.cpp transcribes to Devanagari text
• Gemma 4 parses transcript into job card fields
• Server generates job number and saves record
• Mark machine with job number
• When fixed, send WhatsApp voice note and UPI QR to customer

Evidence

Nothing else gets written down. No slip for the customer, no photo of the machine, no history.

Source

Repairwala is the record book the shop never had.

Source

He says the job out loud, the way he'd tell me: "रमेश यादव, बरियातू से, सबमर्सिबल मोटर नहीं चल रहा, वाइंडिंग जल गई है, पंद्रह सौ लगेगा, परसों ले जाना"

Source

Speech-to-text (whisper.cpp) and the language model (Gemma 4 in Ollama) run on the shop laptop, so customers' names, numbers and photos never leave the shop.

Source

When it's fixed, one tap opens WhatsApp straight in the customer's chat with a Hindi message, a voice note saying it's ready and what it cost, and a UPI QR for the exact amount.

Source