I am evaluating Zoho Invoice, but I have the impression that it is in maintenance mode.  Whenever I search for a missing feature I end up at the Zoho forum where obvious features such as custom item fields, import of items, subtotals, discount on invoice totals, discounts per customers, etc. are forever deferred since 2010.

The last enhancement to Zoho Invoice was in February 2010 announced in this article

https://www.zoho.com/news/zoho_revamps_zoho_invoice.html

 Since then nothing has been done with the product and all requests are deferred to some vague future time. 

This worries me. And I question now signing up for Zoho Invoice since there doesn’t seem to be a road map or resources allocated to this product.