My father runs a cyber café — one of the small service shops across India (CSCs, cyber cafés, Xerox/DTP counters) that resell government or utility services: Aadhaar updates, PAN cards, printing, bill payments, exam forms. The business model is simple: charge the customer a fixed fee, pay a smaller cost to the portal/vendor that actually processes it, keep the difference.
The problem is just as simple, and just as easy to miss: he could always tell you how much cash came in for the day. He could almost never tell you how much of that was actually profit, because that means subtracting a different portal cost for every single service, every single transaction, in his head, at the end of a long day.
So I built Khata ("ledger" in Hindi/Bengali) to do that subtraction for him, automatically, per transaction, in real time.
What it does
Define each service once — name (English/Hindi/Bengali), an emoji icon, a default customer charge, and a default portal cost
