Customer book
Who owes what, by name.

Installment tracker
Shopkeepers and agents keep customers, installment plans, dues, and the day’s collections. Pro is 200 BDT/month on Google Play.

Who owes what, by name.
How many months, how much, and when the next payment is due.
A missed installment stays visible.
What came in today, at the end of the day.
Pro is 200 BDT/month
App on Google Play
The website calculator is free
The flat and reducing formulas, whole-taka rounding, and a 100,000 BDT example. Not a loan offer.