Yes, both Roger and Zervant offer a Free Trial.
Roger is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Zervant is designed for Medium Business and Small Business.
Pricing details for both Roger and Zervant are unavailable at this time. Contact the respective providers for more information.
Some top alternatives to Roger includes Odoo Accounting, easybook.io, Kashflow, Kashoo, DOKKA, QuickFile, K2, AccountsIQ and Eleven.
Some top alternatives to Zervant includes Invoice Ninja, Invoiced, Zoho Invoice, InvoiceBerry, Invoicely, Moon Invoice, Invoicebus, Simple Invoices, Billin and Invoice Simple.