Byaj BookInterest, worked out to the day.

For traders who lend to parties at a monthly rate. Keep every loan, payment and further amount in one place, and see the balance on any date.

Coming soon

No more calculator and notebook.

Byaj Book does the arithmetic, and shows its working.

Parties

Every party, every loan.

Each party holds its loans, with the total outstanding and open loans on the home screen.

Actual days

Counted to the day.

Interest runs on actual calendar days at your monthly rate.

Part payments

Part payments, handled.

At each payment, interest to date is added and the payment taken off. The new balance carries on.

Rate changes

Change the rate from any date.

Days before are charged at the old rate, days after at the new one.

Statements

A statement nobody argues with.

Share a PDF of every period, with the formula printed on it.

Any date

The balance on any date.

See what is owed today, or on any date you choose.

Private

Stays on your phone.

No internet, no sign-in. Back up to a file you keep.

The method

The method, shown.

A screen explains exactly how the interest is worked out.

The same work, in less time.

The job The usual way With Byaj Book

Counting days

The usual wayDay by day, month by month, with a calculator.

With Byaj BookActual calendar days, counted for you.

After a part payment

The usual wayWork out the new base by hand.

With Byaj BookDone as you enter the payment.

A rate change

The usual wayRecalculate everything.

With Byaj BookAdd the change from its date. The split is automatic.

Settling up

The usual wayArguing over the figure.

With Byaj BookA PDF statement showing every period and the formula.

Be first to try Byaj Book.

Good to know

  • For Android.
  • Interest is added to the balance at each payment or further amount. A rate change on its own does not.