Yes, both Zervant and Moon Invoice offer a Free Trial.
Zervant is designed for Medium Business and Small Business.
Moon Invoice is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
The starting price of Moon Invoice begins at $5.47/month when yearly, while pricing details for Zervant are unavailable.
Some top alternatives to Zervant includes Invoice Ninja, Invoiced, Zoho Invoice, InvoiceBerry, Invoicely, Moon Invoice, Invoicebus, Simple Invoices, Billin and Invoice Simple.
Some top alternatives to Moon Invoice includes Invoice Ninja, Invoiced, Invoicely, Invoicebus, Simple Invoices, Billin, InvoiceApp, Refrens Invoice and Billogram.