Whether you use a notebook, a register or a phone, a tailor's khata needs just a few columns per customer:
Three problems show up every season: pages get torn or lost, "balance" is recalculated from memory, and when a customer asks for an old order nobody can find it quickly.
NaapPro keeps the same familiar columns but adds three superpowers: every customer's orders stay together automatically, the udhaar report adds itself up, and you can export all customers to a CSV file in one click — the same "khata format" you already know, safe forever.
It is free to start. Your register never needs a new page again.