Zervant alternative: does Sumaro fit your invoicing routine?

Start free or pay a monthly plan?

On its German website, Zervant advertises a free entry tier for a small number of clients as well as paid premium features. Check the current limits and plans with the provider before you compare your annual costs.

After the 30-day trial, Sumaro costs €19 per month plus VAT. You don’t need a credit card for the trial. If you only write an invoice now and then and the free Zervant tier is enough for you, Zervant may be more economical. Sumaro is worth comparing if you also want to handle receipts, incoming payments and open receivables in the same workflow.

Estimates, invoices and time tracking

Zervant documents estimates that clients can accept by email, conversion into invoices, delivery notes, a mobile app and billing of tracked time. Zervant is also available in German, so language is not a unique selling point for Sumaro.

In Sumaro, the path leads from client data and estimate to the invoice and the incoming payment. Built-in time tracking is not part of the Sumaro scope compared here. If you mainly want to track and bill hours on your smartphone, that’s a reason to take a closer look at Zervant.

Keeping track of open payments and receipts

Zervant lists payment status, payment reminders and online payments as features. It would therefore be wrong to attribute tracking of open invoices to Sumaro alone.

Sumaro connects open receivables with expenses, receipts and a finance cockpit. Bank transactions are imported via CSV and matched with cases; this does not mean a direct, ongoing bank sync. Use a typical account export to check whether the matching fits your bank and your monthly routine.

Check e-invoicing with a real client case

Zervant lists XRechnung on its German website. Sumaro supports XRechnung and ZUGFeRD output. Compare the format you actually need, the reference fields and your recipient’s delivery channel instead of deciding on the term “e-invoice” alone.

To do this, test an invoice with your usual tax rates and the details your recipient requires. A readable PDF preview alone does not prove a correct structured e-invoice. Check plan-dependent features and current requirements directly with each provider.

When switching to Sumaro pays off

Switching makes sense if you currently have to hold invoices, receipts and the overview of open payments together across several lists, and testing Sumaro tangibly shortens that work. Compare the total cost, including the time for setup and data transfer.

Stay with Zervant if its free tier is enough, you need the mobile app or time tracking, or your existing workflow runs reliably. A new invoicing program should solve a specific task better, not just look different.

• Test Sumaro: handle invoices, receipts and incoming payments together
• Take a closer look at Zervant: free entry tier, mobile invoicing app and time tracking
• Before switching: check the exports and client formats you need with one complete case

Switching from Zervant to Sumaro: test one case first

Before switching, back up your original invoices, client data and a list of open receivables from Zervant. Check which exports your plan allows and how you can access old documents later. There is no promise here of an automatic, complete transfer from Zervant.

In Sumaro, first create a test client and map a typical job: estimate, invoice, a related receipt and an incoming payment from a CSV bank export. Check amounts, tax rates, due dates and the exports you need. Don’t send duplicate invoices to clients during the test.

If this workflow fits, choose a cut-over date for new invoices and a clear number sequence. Track old open receivables separately and secure access to their originals. Don’t recreate an existing case as a new invoice just to make it visible in the new system.

• Back up original documents and open items
• Test one job including payment and receipt
• Agree on the export with your tax advisor
• Set the cut-over date and invoice numbers, keep old records accessible