Zoho books subscription

Hi

Few months back I had taken an yearly subscription for Zoho invoices. Now with the business growing I am feeling the need of an accounting software which manages my expenses, purchases and keeps records of accounts. Zoho books seems ideal for me. So do i need to buy its subscription as well in addition to 120$ I paid for Zoho Invoice or that can be adjusted in the same.
Zoho books seems to to all this in addition to create invoices as well for which I am using Zoho Invoice.

Please help.

Regards
Tashi
enertia